Insulating an Old House from the Outside

Effective home insulation is crucial for maintaining warmth during colder months, reducing energy bills, and ensuring indoor comfort. This guide outlines the key areas homeowners should prioritize for insulation, as well as locations where insulation is not only unnecessary but can also be detrimental. According to experts like Geoff Walker from ASAP Restoration and Andrew Prchal from Gunner, understanding where and how to insulate correctly is as important as identifying areas to avoid. Geoff Walker emphasizes that while insulation may not offer a direct return on investment when selling a home, its benefits in preventing drafts and enhancing comfort are invaluable. The initial focus for insulation efforts should be windows and doors, as these are primary points of heat loss. Gaps and cracks in their trim and frames allow significant air transfer, increasing heating costs. Sealing these openings with weatherproof caulk, such as Gorilla Silicone Waterproof sealant for outdoors or paint-ready acrylic latex caulk for indoors, is an effective first step. Andrew Prchal highlights the importance of maintaining tight seals, noting that failing window and glass seals contribute to substantial energy waste. Additionally, self-adhesive weatherstripping provides an easy-to-fit solution for preventing drafts around windows and doors, while fabric draft excluders offer a stylish, non-invasive option for door bottoms. The loft or attic space is another critical area for insulation, as hot air rises and can escape through inadequate attic insulation. Experts recommend insulating between wall studs, between and over floor joists, and potentially in the rafters. Proper ventilation in the attic is essential to prevent issues like roof and siding deterioration or mold growth, especially if insulation gets wet. Blown-in insulation, such as US SANCTUARY by Greenfiber R-60 Cellulose or Owens Corning AttiCat R-19 Fiberglass, is suggested for its efficiency and ease of application, often allowing for equipment rental to facilitate DIY installation. Insulating the loft access door is also a commonly overlooked but crucial step to prevent heat loss. Exterior walls are a high-priority area for insulation. Insulating these walls is more effective than internal wall insulation, as they form the primary barrier against external elements. Gaps in exterior framing can allow air infiltration, negating the benefits of insulation. Andrew Prchal stresses that insulation creates a barrier to trap warm air and that well-insulated siding or an insulated barrier is key. Products like Kingspan GreenGuard R-10 Unfaced Foam Board Insulation can be continuously applied to exterior walls to enhance their R-value. Conversely, interior walls generally do not require insulation, as it offers no significant energy savings and can be a waste of resources. Floor insulation is advisable for rooms situated above unheated spaces like garages, crawl spaces, or overhangs. Fiberglass insulation or spray foams are popular and effective DIY options for these areas, contributing to warmer floors and overall comfort. Insulating a crawl space also indirectly warms the living areas above it. Adding rugs is a simple way to provide additional thermal comfort and insulation on floors. However, certain areas should never be insulated. Walls made of porous materials like bricks and old masonry, which are designed to absorb and redistribute moisture, should remain uninsulated to avoid issues like mold growth due to obstructed airflow. Similarly, unoccupied or unused areas like certain crawl spaces, if not intended for use, may not benefit from insulation, and insulating them could interfere with necessary ventilation or moisture prevention, leading to structural problems. #HomeInsulation #EnergyEfficiency #WinterPreparation #HeatLossPrevention #DIYHomeImprovement #HomeHeating #AtticInsulation #DraftProofing #ExteriorWalls #FloorInsulation

The article details various types of home insulation materials, outlining their pros and cons to help homeowners make informed decisions. It covers expanded polystyrene, glass fibre, loose fill insulation (macerated paper, mineral wool, waste glass fibre, and wool), polyester and wool blends, and spray foam insulation. Expanded polystyrene, available in rigid foam sheets, is suitable for exterior cladding, concrete floor insulation, and insulating floors, walls, and ceilings. Its ease of installation between floor joists, provided there is adequate working space, is highlighted. It is crucial that expanded polystyrene for insulation is manufactured with compressible edges to ensure a tight fit. Glass fibre, a common insulation material made from recycled glass, comes in rolls or segments for various applications. The article addresses past concerns about glass fibre being a possible carcinogen, noting that the International Agency for Research on Cancer has since reclassified it as not classifiable as carcinogenic to humans. However, it can still cause irritation during installation, necessitating protective gear. Professional installation can be more cost-effective due to trade rates, and proper installation without compression and with firmly butted joins is essential to maintain its R-value. Loose fill insulation is typically machine-blown into ceiling spaces, offering an effective solution for difficult-to-reach areas. Common types include macerated paper (cellulose fibre), glass fibre, mineral wool, and new or recycled wool. Macerated paper, made from recycled newsprint, is the cheapest but has a history of problems, including dustiness, moisture retention, settling, and attractiveness to rodents. Mineral wool is more expensive but more stable and fire-resistant. Waste glass fibre, while non-combustible, can be dusty and prone to settling. Wool-based loose fill, made from low-grade natural wool or waste clothing, can be dusty and is combustible in an established fire. Both paper and wool insulation types are less effective at drying out after roof leaks, potentially leading to mould. For loose fill, comparing density (kilograms per square metre) and ensuring the correct amount is used are important considerations. The Fire Service has raised concerns about macerated paper and wool smouldering. Polyester and wool, available in rolls or segments, are newer options that are more pleasant to handle than glass fibre, as they do not cause skin irritation, but they are also more expensive and harder to cut. Reflective foil, once common for underfloor insulation, was banned from installation and repair in residential buildings in 2016 due to electrocution risks associated with contact with electrical wiring. Spray foam insulation, applied with a spray gun, expands and hardens upon contact, creating a superior airtight seal compared to other products. Its thermal performance depends on coverage and thickness. Installation is a specialist task, requiring professional expertise, but homeowners can still verify correct thickness and absence of gaps. The article concludes by recommending a Beacon Pathway report for further details on insulation material characteristics in New Zealand homes. #HomeInsulation #InsulationMaterials #ExpandedPolystyrene #GlassFibre #LooseFillInsulation #PolyesterWool #SprayFoamInsulation #HomeImprovement #EnergyEfficiency

Maintaining a comfortable home temperature throughout the year requires various strategies, including effective insulation. While basement insulation is broadly beneficial for energy savings and creating dry, comfortable living spaces, the specific approach of insulating basement ceilings versus walls is a key consideration. Basements can contribute significantly to heat loss, accounting for 10-30% of a home's total heat loss, and pose a risk for moisture issues due to cold surfaces. Therefore, insulating the basement can lead to substantial savings on energy bills and reduce a home's environmental impact. Insulating a basement ceiling offers several advantages, particularly in colder climates, by aiding in both heating and cooling efficiency. An additional benefit is noise reduction between floors, which can greatly enhance the living experience. However, basement ceiling insulation is not mandatory by code. There are also potential downsides to consider. Insulating the ceiling can thermally separate the basement from the main house, potentially making the basement colder. This could lead to cold air infiltrating the main living areas through cracks and holes around electrical wires and plumbing. Furthermore, the presence of numerous mechanical pipes and wires in the ceiling joists can complicate insulation installation, making it impractical. Height limitations in basements might also prevent the addition of insulation and drywall. Traditional fiberglass or mineral wool insulation, if installed with the paper facing exposed, can be a fire hazard. If unfaced, small fibers might continually fall, creating an "itchy" environment. While spray foam is an alternative, its cost is often not justified by the minimal gain when insulating the ceiling alone. Conversely, insulating basement walls offers different benefits and challenges. Wall insulation is effective in controlling moisture, which helps prevent black mold and rot, and also contributes to energy conservation. For new constructions, exterior insulation can be applied, while interior wall insulation is an option for existing homes. However, interior wall insulation slightly reduces usable basement space and may require fire-rated coverings depending on the material. Crucially, proper installation is essential for interior wall insulation to be effective. It must be installed airtight to prevent airborne vapor from condensing on cold walls, and the material needs to be a semi-permeable vapor retarder, allowing any moisture from the wall to dry towards the interior. Experts generally recommend prioritizing external wall insulation over basement ceiling insulation. The rationale is that even an unconditioned basement is more thermally connected to the living spaces above than to the outside environment, making wall insulation a more effective strategy for overall home energy efficiency. This approach not only helps in mitigating moisture and mold issues, common in basements, but also offers a more significant reduction in energy bills. For those still considering basement ceiling insulation, primarily for soundproofing, acoustic insulation is recommended. Bat/roll acoustic insulation, available at hardware stores in various R-ratings, is suitable for DIY installation in open ceilings with standard studs and joists. Options with foil facing can act as a vapor or air barrier, which is beneficial for basements. Ultimately, comprehensive home insulation from roof to foundation is ideal, but for basements, focusing on wall insulation is often the more impactful solution for comfort and energy savings. #HomeInsulation #BasementInsulation #EnergyEfficiency #HomeComfort #MoistureControl #NoiseReduction #HomeRenovation #DIYHomeImprovements #ThermalEnvelope

While the allure of energy generation through solar panels and intricate systems often captures attention, the fundamental importance of energy efficiency, particularly through proper insulation, is frequently overlooked. Government research indicates a significant disparity in energy efficiency between older and newer homes. Properties built before 1929, regardless of size, commonly possess Energy Performance Certificate (EPC) ratings of E or worse, contrasting sharply with the mere 3% of homes built since 1996 that fall into this category. Despite attractive features and size, older country houses are not immune to the benefits of improved insulation, which can significantly reduce fossil fuel consumption. Basic insulation measures are often affordable and impactful. Loft insulation, for instance, can be a straightforward DIY project in uncomplicated spaces or managed by specialists for more complex areas. For homes constructed prior to the 1920s, which typically feature solid walls, specialized insulation solutions are available. These methods, designed to meet building regulations and specific U-values, effectively minimize heat loss by approximately 45% and reduce condensation. While external and internal insulation can pose challenges due to period features, external options can be discreetly installed behind hung tiles or during roof replacements. Internal solid wall insulation, involving rigid prefabricated boards or timber/metal studwork filled with insulation, is a professional undertaking that can cost thousands of pounds. Homeowners of smaller cottages should consider the potential reduction in room size due to the insulation's thickness, though thinner DIY veneers exist. Window insulation is another critical area. Although double glazing traditionally presented difficulties for listed buildings, modern advancements allow for its installation in sash or leaded windows without compromising authentic styles. New frames, in addition to glazing, offer superior insulation compared to traditional wood. Alternatives include replacing original thin glass or fitting recessed brush strips to sashes, with DIY draught strips being a simple solution for other timber-framed windows and doors. For properties with mains gas, investing in an A-rated high-efficiency condensing boiler is advisable, as it recovers wasted heat from the flue. Enhancing existing central heating systems can involve professionally flushing radiators and replacing old-style radiators with modern fin-types for increased heat output. Optimizing radiator placement by inserting reflective panels behind those on external walls is also beneficial, as the historical practice of mounting them under windows is less efficient. Implementing a zoning system, either through computer control in new systems or inexpensive thermostatic valves on existing radiators, allows for manual temperature regulation in rooms or wings not in constant use. Ultimately, the most effective approach to energy conservation in a period home is ensuring its airtightness. For example, the Grade II-listed Mill House in Tidmarsh, Berkshire, showcases how period features can be preserved while integrating modern insulation, an air-source heat pump, and underfloor heating, demonstrating a successful blend of heritage and energy efficiency. #PeriodHomeInsulation #EnergyEfficiency #LoftInsulation #SolidWallInsulation #WindowInsulation #DoubleGlazing #CentralHeating #SustainableLiving #HistoricHomes

This article explores seven methods to keep an old house warm during winter without relying heavily on central heating, drawing inspiration from techniques used by previous generations in similar homes. The author, who lives in a 110-year-old Edwardian house, highlights the charm of old properties but acknowledges their propensity for becoming cold, leading to high heating bills. The proposed strategies aim to reduce energy consumption and improve comfort. The first method involves hanging heavier curtains and thermal blinds. The author notes a significant difference after installing a thermal blind in their son's room and plans to extend this to the living room's single-glazed bay window and a daughter's bedroom. A thick, full-length curtain is also planned for the draughty front door, a practice observed in the house by a previous owner. Christine Matthews, a heating appliance expert, supports this, explaining that drawing heavy, lined curtains at dusk creates a barrier to trap heat indoors. The second strategy is consistently closing doors. While this might feel unusual, keeping internal doors closed prevents heat loss and blocks cold draughts, particularly beneficial in older homes with less snug-fitting doors. This technique also helps in containing warmth within specific areas, especially in open-plan layouts that were less common in the past. Draught excluders beneath doors are suggested for enhanced effectiveness. Thirdly, the article advocates for increasing the number of rugs throughout the house. Historically, heavy rugs were used to insulate floors, which are a significant source of heat loss in older properties. Michael Zohouri, founder of Pyramid Eco, emphasizes that warm feet contribute to overall warmth. The author plans to add rugs to the dining room with engineered oak floors, the slate-floored hallway, and even carpeted bedrooms for an extra layer of insulation. The fourth point addresses draught-proofing the front door. This area is identified as a major source of heat loss and cold air ingress. The author intends to install draught-proof strips around the door, letterbox, and keyhole, and seal gaps around windows. This aligns with Zohouri's advice to block as many draughts as possible to prevent heat from escaping. Fifth, the concept of "heat zoning" is promoted, encouraging occupants to heat only the rooms they are actively using, mirroring how ancestors conserved warmth. Christine Matthews suggests using a space heater or a freestanding portable wood-burning stove to heat a single room where family members gather, offering substantial savings compared to heating the entire house. Zohouri adds that older homes, with their smaller rooms, were inherently better suited for this zonal heating approach. The sixth method involves lighting the log burner earlier. The author's log burner, located in the open-plan kitchen diner, is an efficient heat source. However, the author tends to delay lighting it. The recommendation is to start the fire earlier to allow the space to warm up gradually. Christine Matthews advises proper fire lighting techniques for efficiency and suggests using a stove fan to circulate warm air more effectively. Burning dry, well-seasoned wood is also crucial for optimal heat generation. Finally, the article touches upon the heating methods of Edwardians, clarifying that central heating was uncommon, with reliance on open fires, stoves, thick curtains, rugs, and warmer clothing. The author concludes by considering whether to invest in an electric heater, acknowledging the cost implications and suggesting that the aforementioned traditional methods might be more effective and economical for keeping an old house warm without excessive reliance on modern heating systems. #HomeHeating #EnergyEfficiency #OldHouseLiving #WinterWarmth #DraughtProofing #ThermalInsulation #LogBurner #CostSaving

This article details an innovative and cost-effective method for constructing highly insulated walls in residential buildings, achieving an R-30 wall system. The technique, developed by builder Stephen Bonfiglioli, involves using strips of high-density expanded polystyrene (EPS) foam as a thermal break on the interior side of wall studs, followed by 1x3 strapping. This approach addresses thermal bridging, which is a common issue in conventional framing where studs create paths for heat transfer, compromising the overall insulation effectiveness. Bonfiglioli's method is presented as a less expensive and simpler alternative to other high-performance wall assemblies that often entail greater complexity and cost. The historical context provided highlights Bonfiglioli's long-standing commitment to energy efficiency, tracing back to 1977 when he consistently built homes with 2x6 walls and R-19 insulation, exceeding the R-11 code requirement for 2x4 walls of his time. This commitment stemmed from a belief in the inherent value of energy-efficient homes. Over the years, he explored various high-performance wall systems, finding many to be overly intricate and expensive. The current method evolved from a question posed 12 years prior: what if interior walls were furred out with rigid foam strips and strapping? This idea offered a solution that integrated thermal breaking, increased wall thickness for higher-density insulation, and promised cost savings. The selection of foam is crucial to this system. The article specifies the use of 1-inch-thick high-density EPS foam, typically sourced from specialized suppliers, or alternatively, full sheets of rigid foam can be cut into 1 1/2-inch-wide strips. The rationale for choosing EPS foam over other types like XPS or polyisocyanurate, despite their higher R-values, is primarily cost-effectiveness. EPS, with an R-value of R-4 per inch, is deemed sufficient to create an effective thermal break and slow heat transfer through the framing, making it the most economical choice for this application. A significant advantage of this wall system is its speed and strength. The process of adding foam strips to an entire 3000-sq.-ft. house can be completed in a day or less, leading to considerable savings in time and labor compared to more complex wall assemblies. Furthermore, the presence of 1x3 strapping over the foam strips allows for the use of conventional fasteners for drywall and trim installation. This eliminates the need for longer, specialized fasteners often required in other deep-wall systems to reach framing behind insulation. The strapping also provides a convenient surface for homeowners to securely hang pictures and shelves later, enhancing the usability and appeal of the finished walls. Effective air-sealing is emphasized as a critical component, particularly when using fiberglass batts. Before installing the high-density R-30 batts, all holes and gaps are sealed with spray foam. This meticulous air-sealing ensures that the fiberglass insulation performs optimally. The installation of the fiberglass batts requires careful attention to fill the stud cavities completely with minimal compression to maintain their stated R-value. The article also mentions the inclusion of a whole-wall vapor retarder as part of the system, further contributing to moisture management within the wall cavities and enhancing the long-term performance and durability of the structure. Overall, the described method provides a practical, economical, and high-performing solution for modern home insulation. #HomeInsulation #ThermalBreak #EnergyEfficiency #WallConstruction #RigidFoamInsulation #BuildingPerformance #EPSFoam #AirSealing #FiberglassBatts

The article provides a comprehensive guide on how to draught-proof a front door, a crucial step for homeowners looking to save energy and maintain a comfortable indoor temperature. Draughts around the front door can lead to significant heat loss, forcing heating systems to work harder and increasing energy bills. The process begins with identifying the source of the draughts, which can be done by inspecting the door frame for visible gaps or by using a lit candle or incense stick to detect air movement. Loose hinge screws can also be a culprit, and tightening them might resolve the issue before resorting to other methods. Several solutions are presented for different types of draughts. For gaps at the bottom of the door, attaching a door sweep or brush strip is recommended. These are affordable, easy to install, and available in adhesive or screw-on options. Heavy-duty metal door sweeps are suggested for high-traffic doors due to their durability and ease of cleaning. Letterboxes are another common source of draughts that are often overlooked. The article advises using specific letterbox draught excluders, which typically feature a brush or flap to seal gaps while still allowing mail delivery. Many options are available to match various front door aesthetics. For draughts around the door frame, self-adhesive foam strips are highlighted as an effective, affordable, and easy-to-install solution. These strips can be cut to size, peeled, and stuck around the door frame to create a seal. The deterioration of seals due to wear and tear, improper installation, natural settling of the house, or aging of door components are identified as common reasons for gaps in door frames. The strips help to fill these gaps and prevent cold air ingress and warm air egress. Non-permanent solutions are also discussed, such as using a draught excluder, often called a door snake. These fabric-filled or weighted tubes are placed at the base of the door to block draughts and come in various stylish designs, allowing them to complement home decor. Another method involves adding curtains, particularly thick thermal curtains, as an extra barrier against draughts. This approach is noted for both its aesthetic appeal and its effectiveness in retaining heat, provided a curtain rail can be installed above the door. Finally, the importance of testing and adjusting the draught-proofing measures is emphasized. After applying the solutions, re-testing with a candle or incense stick helps ensure all gaps are sealed. Annual checks, especially before colder months, are recommended to maintain effectiveness, as weatherstripping and caulk can degrade over time. The article concludes by listing common reasons for draughty front doors, including gaps around the door frame, unsealed letterboxes, failed weatherstripping, loose hinges, and improper door alignment, while acknowledging that achieving a completely airtight door, especially with a functional letterbox, can be challenging but significantly mitigated with these methods. #HomeEnergySaving #DraughtProofing #FrontDoor #DIYHomeImprovement #EnergyEfficiency #WinterHomePrep #HomeMaintenance #ThermalInsulation

The article addresses the common issue of cold drafts in homes, particularly older ones, and offers expert-recommended solutions to enhance warmth and reduce energy costs. Elizabeth Finkelstein, co-founder of Cheap Old Houses and author, clarifies that older homes are not inherently drafty; rather, deferred maintenance often leads to air leaks. She notes that many older homes are constructed with superior insulating materials like old-growth wood, brick, and plaster compared to modern materials. Steve Cymbalsky, founder of Brownstone Home Inspection, explains the 'stack effect,' where warmer air rises and escapes through the roof, intensifying in winter as colder air enters and is heated. To counteract this, he emphasizes sealing openings at both lower and higher levels of the house. The article provides ten specific product recommendations and strategies. First, sealing windows is crucial. Finkelstein suggests interior storm windows, mentioning Oregon-based Indow Windows which offers custom-insulated inserts, or a more budget-friendly option like insulating shrink film. Several reviewers attest to the effectiveness of shrink film in reducing drafts and lowering heating bills. Second, sealing doors is essential. Cymbalsky recommends wood-capped door sweeps for the bottom of doors and advises focusing on the inner vestibule door for front doors, especially in older homes with complex outer doors. He suggests either DIY insulated wooden door stops using stain-grade wood and weather stripping or pre-made door stops from manufacturers like Randall, which can be stained to match existing woodwork. A simpler alternative for door sealing is a weighted door stopper, which reviewers confirm significantly reduces drafts. Third, addressing other openings is important. Thick, insulated drapes are recommended by Finkelstein to improve window insulation and regulate indoor temperature year-round. For fireplaces not in use, Cymbalsky advises covering them to block cold air entry, with magnetic fireplace blankets being a practical solution that can lead to energy savings. He also highlights the dryer vent cover as a common, overlooked source of drafts, recommending ensuring it functions correctly to prevent outdoor air from entering. Similarly, window or through-wall AC units should be covered or removed during colder months to prevent drafts, with specific covers available for this purpose. Finally, Finkelstein suggests using a humidifier that emits warm mist to make the indoor environment feel warmer and counteract the dryness caused by winter heating, mentioning highly-rated smart humidifiers as a suitable option. These recommendations collectively aim to improve heat retention and comfort in homes while potentially reducing heating expenses. #HomeHeating #DraftProofing #EnergyEfficiency #WinterPreparation #HomeMaintenance #WindowInsulation #DoorSealing #HumidifierBenefits #OldHouseCare

Drafty doors can compromise the comfort and energy efficiency of a home, making a poor first impression and driving up heating costs. This guide offers six practical and often affordable methods to eliminate cold drafts and improve the overall warmth of an entryway. These solutions not only address immediate comfort but can also contribute to preventing condensation and mold buildup. One effective approach involves addressing the glass components of a door. Poorly fitting doors and weather-worn windows are primary culprits of heat loss. Replacing single-glazed glass with double-pane or energy-efficient inserts significantly reduces drafts and enhances insulation. These specialized glass options can also block harmful UV rays, protecting indoor furnishings from damage and fading. For a more budget-friendly option, window insulation film kits provide a do-it-yourself solution. These kits consist of a plastic shrink film applied to the interior window frame with double-sided tape, then heated with a hairdryer to create an airtight seal. While effective and inexpensive, users should be aware that this method can give windows a slightly cloudy, shrink-wrapped appearance, making it best suited for smaller panes where the visual impact is less prominent or can be integrated into the room's style. Hanging a door curtain is another traditional yet effective method for combating drafts. Heavy drapes, especially those made from thick chenille or velvet, or those with thermal linings, can significantly block cold air. While a simple pole-and-clip system can be used for lighter fabrics, fixed poles and curtain rings are recommended for heavier, more insulating materials to ensure proper support and maximum draft prevention. Beyond their practical use, door curtains can also add a decorative touch, introducing color and elegance to a hallway. Weatherstripping tape offers an easy and affordable way to seal gaps and cracks around window panes and door frames. This rubberized tape can be applied even in cold temperatures and helps prevent moisture buildup. While highly effective, it's important to consider that removing weatherstripping can potentially damage paint or leave a sticky residue on painted surfaces. Draft stoppers, also known as 'draft snakes' or 'draught excluders,' are stuffed fabric tubes placed at the bottom of a door to block drafts. These can be purchased in various designs, ideally slightly longer than the door's width for a snug fit. For those inclined towards DIY, draft stoppers can be custom-made from fabric remnants and filled with dry rice, offering a personalized and sustainable solution. Finally, fitting brush plates to mail slots and door sweeps to the bottom of doors addresses less obvious sources of drafts. Mail slots, in particular, can be significant entry points for cold air, and thick brush plates can effectively seal them. Similarly, brush seals or door sweeps installed at the base of doors prevent drafts from entering through the gap between the door and the frame. These can be installed professionally or via adhesive options for a DIY approach. While these solutions offer significant improvements, the article also considers the investment in a new entry door. A new door can enhance curb appeal, improve security, and offer superior draft prevention and insulation. Modern doors are designed to meet performance standards, often indicated by a U-value, with lower values signifying better insulation. This ensures a comfortable indoor temperature year-round and contributes to energy efficiency, making the entryway a welcoming space for guests. #DraftProofing #HomeInsulation #EnergyEfficiency #DIYHomeImprovement #HallwayDecor #WinterComfort #WindowTreatment #DoorMaintenance

With autumn approaching and temperatures dropping, homeowners are looking for ways to keep their houses warm. This article provides comprehensive guidance on insulating cold walls from the inside, emphasizing the importance of understanding wall types and potential issues like dampness before starting any insulation work. Expert insights clarify that the approach to insulation varies significantly based on whether a wall is solid or has a cavity, as well as budget considerations. Before undertaking any insulation, it is crucial to address any underlying damp problems, as cold walls often create ideal conditions for damp and mould. Professionals recommend booking an inspection to assess for dampness and treat it proactively to prevent further issues. Once the wall type is identified and damp concerns are resolved, homeowners can explore various insulation methods. These methods include the installation of insulation boards, which offer a more professional and effective solution. These boards, typically made of rigid foam or mineral wool, are attached to the wall and covered with plasterboard. While this can be a DIY project for small spaces, large areas often benefit from professional installation to ensure longevity and prevent gaps. Spray foam can also be used under plasterboard for a similar effect, though this is typically a task for professionals to ensure proper application and avoid common mistakes that might compromise the product's lifespan. For those on a tighter budget or seeking a more DIY-friendly option, insulating wall coverings are available. While less effective than insulation boards or spray foam, thermal lining paper can provide a short-term reduction in heat loss, with some products claiming to reduce heat loss by up to 18%. Another inexpensive short-term solution is thermal paint, which can be applied to cold walls to reduce heat loss. Many thermal paints can be overpainted with a desired color and finish, offering flexibility in decor. Choosing the best insulation method depends on the specific property. Seeking advice from a qualified specialist is highly recommended to tailor the solution to the home’s age and construction. Prioritizing long-term solutions, even if they involve a higher initial cost, is generally more effective than cheaper, short-term fixes, which may prove more expensive in the long run. Long-term solutions might involve replacing old, failing insulation or adding insulation where none existed previously. The article strongly advises against cutting corners, as incorrectly installed insulation can create new problems. Potential pitfalls of internal wall insulation (IWI) include a reduction in usable floor space and the necessity of removing and refitting internal services like skirting boards, plug sockets, switches, and radiators. Achieving continuous insulation can be particularly challenging in areas such as floor voids. A critical concern with IWI is managing condensation risk; poor detailing can lead to moisture accumulation within the wall structure, fostering mould growth. Homeowners should also be aware of building regulations that may apply to their insulation projects, making expert advice indispensable for ensuring a thermally efficient and safe outcome. Independent experts can provide pre- and post-improvement performance measurements to guide design choices and confirm the effectiveness of changes without introducing new problems elsewhere in the home. Common reasons for cold walls include failed or non-existent insulation, issues with damp and condensation (possibly due to moisture penetration or poor ventilation), and air leaks around windows, doors, vents, or electrical outlets causing draughts. The article reiterates the importance of addressing condensation and dampness before installing insulation to prevent exacerbating these issues. #HomeInsulation #ColdWalls #InteriorDesign #EnergyEfficiency #HomeRenovation #DampPrevention #ThermalPaint #InsulationBoards #DIYHomeImprovement

The building industry is increasingly focusing on creating low-energy homes and minimizing greenhouse gas emissions. While achieving airtight, super-insulated houses has become more common, a design-build firm in Portland, Oregon, aims to go beyond energy consumption to consider the environmental impact of building materials throughout a home's lifespan. The firm committed to eliminating plastic-foam insulation above grade due to concerns about its environmental footprint, including its contribution to global warming potential, difficulty in recycling, and potential for microplastic pollution. Plastic foam also presents drawbacks such as flammability, R-value degradation over time, and challenges in creating reliable air barriers due to its inability to withstand seasonal wood movement. Furthermore, it can restrict drying potential in building assemblies and its hydrophobic nature may not always be beneficial. Spray foam specifically encapsulates wood, making repairs difficult and posing health risks for installers, alongside issues of improper installation and heat generation during curing. One of the most challenging areas to avoid plastic foams is in insulated roof assemblies, particularly in homes with vaulted ceilings. Traditional methods for insulating vaulted ceilings often involve plastic foams or face limitations. In climate zones 1 through 3, code-required insulation levels can be met with fibrous insulation in common vented roof assemblies or by filling rafter bays in unvented assemblies with a vapor-diffusion port at the ridge. However, in climate zones 4 and above, where condensation risks are higher, vented assemblies with baffles are often problematic. These baffles, made of thin plastic, are susceptible to crushing during insulation installation and can reduce the available space for insulation, potentially hindering the achievement of required R-values and energy efficiency. Alternatively, mixed- and cold-climate builders frequently use spray foam or rigid foam to create unvented (hot) roofs, which, while effective, rely on plastic-foam insulation and have limited drying potential. To address these challenges without using plastic foam, the design-build firm developed a versatile, durable, and energy-smart solution for vaulted ceilings. This approach incorporates continuous venting, effective vapor management with multi-directional drying potential, and an easily connectable interior air barrier. The rafter bays are fully filled with insulation, typically dense-pack cellulose, though other fibrous insulations are suitable. The construction process involves installing a vapor-open water-resistive barrier (WRB) over the roof rafters before sheathing. Flat 2x4 strapping is then nailed along the rafters to create vent channels, with notched 2x4s installed perpendicularly at the eave and ridge to allow air passage. Cor-A-Vent soffit strips are used to prevent insect entry. This system ensures durable and effective vent cavities that are interconnected across hips, valleys, and dormers, unlike traditional methods that struggle with complex roof geometries. The WRB also functions as insulation netting, keeping vent chambers clear and allowing moisture to dry to the exterior. On the interior side of the rafters, a variable-perm vapor retarder, such as Siga Majrex or ProClima Intello, is installed. This membrane acts as the primary air barrier and modulates its permeance based on humidity, allowing less vapor to pass in cold, dry conditions and more in warm, humid conditions to facilitate drying. Below this membrane, another set of flat 2x4s creates a service cavity for electrical wiring and junction boxes, preventing penetrations of the air barrier. Dense-pack cellulose insulation, known for its hygric buffering capabilities, further enhances moisture management by taking on and releasing moisture. The entire assembly is designed for continuous air-sealing, with the vapor retarder taped at seams and penetrations and connected to the wall's air barrier. This air-sealing strategy, which includes using truss screws instead of hurricane ties for wall-to-rafter connections, significantly improves overall home performance and comfort while avoiding plastic foams. The firm has successfully implemented this system on multiple homes, continuously refining the process for efficiency and effectiveness, delivering high-performance, foam-free solutions for their clients and the environment. #RoofInsulation #VaultedCeilings #GreenBuilding #CelluloseInsulation #VaporControl #AirBarrier #SustainableConstruction #BuildingScience #EnergyEfficiency

Reducing heat and air conditioning loss through exterior walls is crucial for energy efficiency, lower utility bills, and environmental benefits. However, selecting the right insulation can be complex due to various material options, installation methods, and factors like home structure and climate. This guide analyzes popular exterior wall insulation options, focusing on their performance and installation considerations. Sika Rmax Pro Select Polyiso Insulation Board is highlighted as the top choice due to its versatility, ease of use, and high R-value per inch, making it suitable for both indoor and outdoor applications where space is limited. Sika Rmax Pro Select Polyiso Insulation Board, a dense foam insulation sheet, excels in its ability to be used both internally and as exterior cladding. Its polyiso foam composition uses pentane, an environmentally friendlier organic replacement for CFCs. The boards feature a white side and a reflective side, allowing them to function as an air/water barrier or a radiant barrier for exterior use. With an R-value of 13.1 at just 2 inches thick, it offers a high insulation performance in a thin profile. An important advantage is its continuous insulation property, covering wall studs and cavities to prevent heat loss through the entire wall assembly, unlike batts or blown-in insulation which only fill cavities. Despite being more expensive than some alternatives and requiring careful handling due to potential damage, its benefits often outweigh these drawbacks. Other effective insulation types include mineral wool rolls (like Rockwool ComfortBatt), extruded polystyrene (XPS) foam boards (Kingspan Greenguard), fiberglass rolls (Owens Corning), and fiberglass batts (Johns Manville). When choosing exterior wall insulation, several factors are important. The R-value, a measure of thermal resistance, indicates how well a material prevents heat transfer; higher values mean better insulation. However, the ideal R-value depends on the climate zone and specific home needs, with excessive R-value potentially leading to unnecessary expense. Thickness is also a significant consideration, especially for interior installations where wall space is limited. Foam boards generally offer higher R-values for less thickness compared to fiberglass or mineral wool. Different insulation types, including foam board, fiberglass, mineral wool, spray foam, and cellulose, each have unique properties, installation requirements, and environmental impacts. For instance, fiberglass is affordable but can cause irritation, while spray foam and cellulose typically require professional installation. Architect Baraa Yakzan emphasizes the importance of considering fire rating, and permeability to air and vapor to prevent moisture issues and mold, which can impact the insulation's effectiveness and lifespan. The presence and type of vapor barrier should also be determined based on the local climate. Fiberglass insulation, while durable, is not suitable for outdoor use due to its susceptibility to mold and mildew. #ExteriorWalls #HomeInsulation #EnergyEfficiency #RValue #PolyisoInsulation #FiberglassInsulation #MineralWool #BuildingMaterials #HomeImprovement

As winter approaches, preparing a home for colder temperatures is essential not only for comfort but also to protect the property from potential damage and high heating costs. Cold air infiltration through gaps around windows and doors, and poorly insulated areas, can lead to significant heat loss, making heating systems work harder and increasing energy bills. This article highlights eight key products recommended by experts, including a fourth-generation contractor, and product testers to effectively winterize a home. One of the primary areas of heat loss is through windows, accounting for approximately 30 percent of a home's heat escape. The 3M Indoor Window Insulator Kit, a plastic-based window film, offers a solution by improving a home's thermal efficiency. This cut-to-fit film, capable of covering multiple windows, provides enhanced insulation due to its thickness and is easy to install with included double-sided tape, allowing for repositioning during application. Pipe insulation is crucial to prevent freezing and bursting pipes during cold snaps. The Frost King Foil Backed Fiberglass Pipe Wrap is recommended for its reliability and ease of installation. This durable wrap reduces heat loss in hot water pipes and prevents sweating. Even with high-rated windows, thermal curtains offer an additional layer of insulation. The Best Home Fashion Wide Basic Thermal Blackout Curtains block drafts, retain warmth, and contribute to energy efficiency. These machine-washable curtains are available in various sizes and colors, also providing light filtration, noise dampening, and privacy. Drafts around windows and doors are major contributors to heat waste. Weatherstripping, such as Frost King Rubber Foam Tape, is effective for sealing these gaps. This durable, reusable, and easy-to-apply tape creates a tight seal, keeping warm air in and cold air out. To improve heating efficiency by redirecting air, magnetic vent covers like the Frost King Magnetic Vent Covers are useful. These covers seal unused metal floor, wall, and ceiling vents, preventing warm air escape and stopping cold drafts from circulating through ductwork. They are customizable in size and can be painted to match decor. A caulk gun is indispensable for sealing gaps. The Newborn 250 Smooth Rod Revolving Frame Caulking Gun is highlighted for its durable zinc alloy handle, smooth revolving frame for easy application around corners, and features like a thumb release for dripless operation and a built-in cutter. Heat loss under doors can be mitigated with a door draft stopper. The Maxtid Adjustable Door Draft Stopper is a lightweight, effective, and inexpensive option. It attaches with Velcro, making it suitable for high-traffic areas, and can be trimmed to fit different door sizes, blending with various decors. Finally, daily exposure to elements can damage roofs, leading to leaks and weakened sections that allow air and moisture intrusion. Liquid Rubber Waterproof Sealant is recommended for its thick consistency and blending properties. It creates a waterproof membrane on metal, shingle, or rubber roofs, suitable for filling gaps and larger cracks. While thick, it adheres well to various surfaces and effectively prevents further damage before winter. #HomeWinterization #EnergyEfficiency #DIYHomeImprovement #ThermalInsulation #DraftProofing #PipeProtection #HomeMaintenance #WinterPreparedness

Retrofitting insulation in older homes is crucial for improving warmth, energy efficiency, comfort, and indoor air quality, especially when a full gut renovation isn't feasible. This process involves installing insulation without completely deconstructing the interior walls. The effectiveness and suitability of retrofit insulation depend significantly on the type of insulation chosen and the specific areas of the home being addressed. Blown-in cellulose, a dense and clumpy insulation made from recycled materials, is effective in conforming to awkward, hard-to-reach spaces like those around pipes and ductwork. It offers a high R-value and is good at reducing air leakage and noise. However, cellulose can compact and settle over time, reducing its effectiveness. Its installation is also messy and dusty, requiring safety precautions, and it can be susceptible to mold or pests depending on the material composition. Injection foam is another option, characterized by expanding foam injected into existing wall cavities through small holes. This method is ideal for insulating tight, inaccessible areas without removing existing surfaces, thereby keeping costs down. It quickly fills cavities, creates an airtight seal, and improves soundproofing. Nevertheless, injection foam can be expensive and requires professional installation. Improper application can lead to uneven pressure, causing cracks or bulges in walls. Additionally, it encapsulates internal fixtures like pipes, making future access difficult for repairs. Batts, pre-cut pieces of fiberglass, mineral wool, or cotton insulation, are commonly used in open attics of older homes due to their affordability and ease of installation, which often doesn't require a professional. They provide a moderate R-value, offer fire, moisture, and mold resistance, and can be more effective when combined with other insulation types like rigid foam. A drawback is their inability to provide uninterrupted coverage in irregular spaces, leading to potential heat leakage. Over time, batts can compress or sag, losing effectiveness, and their fibers can cause irritation during installation. Reflective or radiant barrier systems, lightweight and affordable, are easy to install, often between wood studs or on ceilings and floors. They utilize reflective foil-faced materials to keep heat in. However, these systems are not very effective on their own and typically complement other insulation types rather than replacing them, as their R-rating is lower than other residential options. Rigid foam board insulation, often made of polystyrene, is an inexpensive and effective option for open areas like unfinished attics or basements. It's easy for DIYers to install and offers high thermal resistance. Its rigid nature, however, makes it impractical for small, irregular, or hard-to-reach spaces, and its typical 8-foot length can make it cumbersome to maneuver during installation. Finally, recycled and eco-conscious insulation, often made from denim, cotton, or natural fibers, comes in various forms. Its primary benefit is its reduced ecological impact. The main disadvantages are its higher cost compared to other insulation types and potential performance concerns, as some eco-friendly options may lose shape faster than traditional fiberglass, potentially requiring more frequent replacement. When selecting retrofit insulation, homeowners must weigh these pros and cons, considering the specific needs of their old home, budget, and desired outcomes. #RetrofitInsulation #OldHomeRenovation #EnergyEfficiency #HomeImprovement #BlownInCellulose #InjectionFoam #InsulationBatts #RadiantBarrier #RigidFoamBoard #EcoFriendlyInsulation

This article highlights the importance of insulating a garage door to improve energy efficiency and maintain comfortable temperatures, especially when using a garage heater or air conditioner. The garage door is identified as a significant source of heat loss or gain due to its thin materials and potential air gaps. Insulating the garage door can help reduce this thermal transfer, making heating and cooling systems more effective. The article serves as a comprehensive guide to selecting the right garage door insulation kit by evaluating top contenders based on factors such as cost, value, door size compatibility, and ease of installation. The review begins with the Reach Barrier Reflective Air Garage Door Insulation Kit, lauded as the best overall option. This budget-friendly reflective insulation solution includes eight trimmable panels made from 20% recycled material, complete with self-adhesive fasteners for easy installation without the need for special tools or protective clothing. Although its R-value (a measure of thermal resistance) is not explicitly stated, its high consumer ratings suggest effective performance in deflecting heat in summer and retaining it in winter. It is suitable for single garage doors up to 8 feet wide or double garage doors up to 16 feet wide, requiring two kits for the latter. For those seeking the best value, the US Energy NASATech Garage Door Reflective Insulation Kit is recommended. This kit offers an impressive R-value of eight, blocking approximately 90% of heat flow. It includes four trimmable rolls, making it versatile for various double garage door sizes up to 18 feet wide, and comes with all necessary installation tools such as heavy-duty double-sided foam tape, a squeegee, and a utility razor knife. The comprehensive package and reasonable price point make it a cost-effective choice for homeowners. The Cellofoam Garage Door Insulation Kit is presented as the best budget-friendly option. Comprising eight moisture-resistant and durable expanded polystyrene foam (EPS) panels, it offers an R-value of just over four. These panels are trimmable to fit individual sections of garage doors up to 9 feet wide (or 18 feet with two kits) and are washable post-installation. However, it's noted that the panels are 20 inches tall, limiting compatibility to 7-foot tall garage doors. For easy installation, the Owens Corning Garage Door Fiberglass Insulation Kit is highlighted. This fiberglass insulation kit boasts an R-value of up to eight and can be installed in under an hour, according to reviews. Its fiberglass material effectively fills gaps at panel edges, and the kit includes protective gloves, adhesive, and clips. It is designed for single garage doors that feature channels to secure the insulation panels. The Matador Garage Door Insulation Kit is praised for its aesthetic appeal, mimicking a factory-installed look. It provides an R-value of 4.8 and is available in two sizes for 7-foot and 8-foot tall doors. The kit contains eight trimmable EPS panels for a single garage door up to 9 feet wide. Installation is simple, involving cutting panels to size and fitting them into the door's channels without special adhesives or tools. Finally, the Kraken Bond FastCoat Spray Foam Insulation Kit is presented as a 'splurge' option for those prioritizing a high R-value. This kit offers an R-value of seven per inch of thickness and includes 12 cans of spray foam, a spray gun attachment, gun cleaner, safety goggles, and gloves. It covers up to 240 board feet, sufficient for a full-size, two-car garage door, and requires no measuring or cutting during installation, though prep work is crucial for optimal results. #GarageDoorInsulation #HomeImprovement #EnergyEfficiency #DIYProjects #TemperatureControl #InsulationKits #HomeMaintenance

The Fine Homebuilding Podcast, featuring Kiley Jacques, Ian Schwandt, and Patrick McCombe, addresses several common construction and home improvement queries from listeners in its 428th episode. The podcast begins by acknowledging listener feedback on various topics. Walter offers a practical tip for simplifying water filter changes by opening a faucet after shutting off the main water supply but before attempting to remove the filter, which he found makes the process considerably easier. Derek emphasizes the concept of opportunity costs in owner-built home projects, noting that the financial value of a homeowner's labor is often underestimated. He illustrates this by calculating that even though an owner-builder might feel they saved money, when their labor is valued at market rates, the project's true cost can align closely with its appraised value, highlighting that "sweat equity" is rarely free. Craig provides a shoutout for Green Glue, a product recognized for its effectiveness in soundproofing, referencing a review by Matt Risinger. The podcast then transitions to listener questions. Dack inquires about Ian's decision to install hydronic radiant floor heating in his new home, particularly given its Passive House design and previous discussions that seemed to favor mini-splits. Dack also seeks clarification on whether the radiant system or the mini-split serves as the primary heating source in Ian's setup, expressing his own preference for hydronic radiant heat for his upcoming build in a similar climate zone. Jerry raises a question about managing construction schedules when unexpected delays or trade unavailability disrupt the typical sequence of work. He describes scenarios where deviations, such as installing cabinets earlier to expedite countertop measurements, can occur and asks for strategies to maintain project momentum despite these challenges. Jerry also provides insight into black exterior trim trends in southeastern Michigan, noting the use of metal trim pieces and custom-bent metal profiles as alternatives to traditional materials, and suggests considering the expansion and contraction of dark aluminum trim during installation. Matt from Baltimore describes a peculiar phenomenon observed in approximately 100-year-old houses: a significant hump in the second-story floor directly above the exterior wall where a room extends over a porch. He notes that the exterior siding shows no signs of movement, suggesting the issue is either historical settlement or original construction. He seeks explanations for this observation to better advise clients, as opening up the floors has not yet been undertaken. Kenneth from Acton, Ontario, presents a comprehensive set of questions related to his 1970s mansard-roof bungalow. He describes issues with basement dampness during heavy rains and seeks advice on waterproofing and insulating the mostly unfinished basement to make it livable, including radon mitigation. He also asks for strategies to insulate and air seal the walls behind the mansard roof, which acts as an attic space, proposing the use of polyiso/EPS board and addressing the challenges of taping joints in a confined area, while expressing a dislike for spray foam. Finally, Kenneth requests the best methods for capping and flashing deep window bucks, considering alternatives to aluminum for aesthetic and acoustic reasons, and inquires if installing a black eavestrough at the top of the mansard would be a suitable solution to prevent dripping. The podcast concludes with a listener asking for recommended builders to follow on social media, listing several Instagram accounts of prominent builders and construction professionals. #RadiantHeat #ConstructionSequencing #Waterproofing #MansardWindows #HomeImprovement #BuildingScience #RenovationChallenges #OwnerBuilderCosts #InsulationTechniques

This article, part of a series on basement insulation, focuses on the crucial step of sealing air leaks around doors and windows in an unfinished basement. Justin Fink conducts a walkthrough to identify areas where air infiltration can occur, emphasizing the importance of addressing these leaks before proceeding with insulation. The primary goal of this phase is to control heat loss and prevent condensation, which are common issues in basements. The video component of this guide illustrates the practical application of air-sealing techniques, providing visual examples of how to effectively seal gaps and cracks around common basement entry points like bulkhead doors and windows. Proper air-sealing is a foundational element of creating an energy-efficient and comfortable basement environment. By minimizing uncontrolled airflow, homeowners can significantly reduce heating and cooling costs and mitigate moisture problems that often lead to mold growth and structural damage. The techniques discussed are designed to create a tighter building envelope, ensuring that the insulation applied in subsequent steps will perform optimally. Effective air-sealing around doors and windows involves a combination of materials and methods, including weatherstripping, caulking, and foam sealants. The choice of materials depends on the size of the gaps and the specific location. For instance, weatherstripping is ideal for movable components like operable windows and doors, creating a compressible barrier that prevents air from passing through when closed. Caulking is used for smaller, static gaps, while expanding foam sealants can fill larger voids around window and door frames. The article implicitly suggests that a thorough inspection is necessary to identify all potential leak points, as even small gaps can contribute to significant energy loss. Controlling condensation is another critical benefit of air-sealing. Basements are often prone to condensation due to temperature differences between the interior and exterior, especially on cold surfaces. When warm, moist air from inside the home comes into contact with these cold surfaces, it can cool below its dew point, leading to moisture accumulation. Air leaks exacerbate this problem by allowing uncontrolled movement of moist air. By sealing these leaks, the movement of warm, moist air to cold surfaces is restricted, thereby reducing the likelihood of condensation and its associated problems like dampness, musty odors, and the potential for mold and mildew. This second part of the basement insulation series serves as a vital precursor to the actual insulation process. It underscores the principle that insulation alone is insufficient without proper air-sealing. Air leakage can bypass insulation, rendering it less effective and compromising the overall energy performance of the home. Therefore, dedicating time and effort to thoroughly seal all air leaks around basement doors and windows is a cost-effective strategy that maximizes the benefits of future insulation efforts, contributing to a drier, warmer, and more energy-efficient basement space. #BasementInsulation #AirSealing #EnergyEfficiency #HomeImprovement #DIYHome #MoistureControl #CondensationPrevention #HomeMaintenance