Make a Watertight Chimney Cricket

This article explores practical and cost-effective do-it-yourself solutions for draught-proofing chimneys, a common architectural feature in homes that, despite its aesthetic appeal, often contributes to significant heat loss. The primary objective of these solutions is to maintain warmth within a room and mitigate rising energy expenses. Experts in heating and energy recommend three distinct methods for chimney draught-proofing: the Chimney Sheep, the Chimney Balloon, and the Chimella. Each of these options involves an initial investment but promises substantial benefits in terms of fireplace draught exclusion and energy conservation. Before implementing any draught-proofing method, it is crucial to accurately measure the chimney's internal cavity. For circular chimneys, the diameter suffices, while oblong shapes require both width and depth measurements. Safety precautions, such as laying a dust sheet and wearing protective goggles, are advised due to potential dislodgement of debris from the chimney flue. The first recommended solution is the Chimney Sheep, which consists of a double layer of felted sheep’s wool insulation affixed to a plastic handle. This natural and sustainable product effectively blocks draughts and can also diminish wind noise. Installation involves selecting a model slightly larger than the flue opening to ensure a snug fit, then gently pushing the wool head into the flue and tugging on the handle to secure it. Next, the Chimney Balloon offers an economical and easily installable/removable option, making it suitable for those seeking a quick fix without permanent fireplace alterations. It's particularly effective in confined spaces. The process entails partially inflating the balloon using a provided tube, positioning it within the flue, and then fully inflating it for a firm seal. Regular checks, approximately every three months, are necessary to ensure the balloon maintains adequate inflation. Finally, the Chimella, resembling an inverted umbrella, provides robust draught blocking, though it is the most expensive of the three. It is deployed by holding it within the chimney, pressing a button to open it, and then adjusting it for a taut fit across the flue. A significant advantage of the Chimella is its stability, remaining secure even if considerable debris falls down the chimney. The article also addresses common questions regarding chimney draughts. The stack effect, where warm air escapes up the chimney and cold air enters, is identified as the primary cause of draughts, potentially leading to up to 5% heat loss. Concerns about dampness due to draught-proofing are alleviated by emphasizing the importance of adequate ventilation. Solutions like Chimney Sheep, Balloons, and Chimellas are designed to allow some airflow, preventing damp and mould. Chimney Sheep uses breathable wool, Chimney Balloons leave small corner gaps, and Chimellas are engineered to circulate air while maintaining ventilation. For active fireplaces, draught excluders must be removed before lighting a fire; Chimney Sheep and Chimellas are easily reinserted, while balloons require partial deflation. It is noted that these solutions are for open chimneys, not stoves with dedicated flues. Lastly, the option of capping a chimney is discussed as a means to reduce draughts and prevent entry of debris or wildlife. This is not a DIY task and requires professional installation. For those wishing to continue using their fireplace, a mechanical damper operated by a hearthside handle is an alternative. #ChimneyDraughtProofing #EnergyEfficiency #HomeInsulation #DIYHomeImprovement #ChimneySheep #ChimneyBalloon #Chimella #EnergySavingTips #HomeMaintenance

As the seasons transition, homes become more susceptible to moisture intrusion, particularly during rainy periods. This guide identifies 12 common exterior areas prone to leaks and provides expert advice on how to prevent water damage. Addressing these vulnerabilities is crucial for maintaining a home's integrity, preventing costly repairs, and avoiding issues like mold and mildew. Skylights, while enhancing natural light, are significant sources of leaks due to aging or damaged weather seals. Replacing seals or applying flexible caulk, like Sashco 10026 Big Stretch Caulk, can resolve minor issues. However, cracks in the glass necessitate professional replacement. Chimneys also pose a risk through their flashing, the material sealing them to the roof. Annual inspections of flashing are recommended, with small cracks in the chimney itself sealed with concrete sealant, such as Stormdry Brick Sealer. Larger cracks may require epoxy injection systems. Furthermore, using an invisible waterproof agent like Fobet Invisible Waterproof Agent can create a protective barrier on various surfaces. Attics and basements, being the highest and lowest points of a home, are particularly vulnerable. In attics, radiant barrier sheathing, like Reflectix, helps prevent condensation and water damage by reducing heat transfer. For basements, a waterproofing sealant such as Drylok Concrete Floor Paint forms an impenetrable barrier against moisture seeping through foundation walls. Dormers, often added during renovations, require meticulous flashing installation; improper sealing can lead to leaks, making professional assessment advisable over quick fixes. Clogged gutters are another major cause of leaks, as they lead to water overflow and subsequent damage. Regular cleaning and the installation of gutter guards, such as the A-M Gutter Guard or EasyOn Stainless Steel Gutterguard, are effective preventative measures. Ensuring gutters slope away from the house further prevents moisture intrusion. Pipe collars, which seal around plumbing vent pipes, are susceptible to UV damage, causing their rubber or neoprene gaskets to crack. Regular inspection and replacement with products like Oatey Rain Collar No-Calk Roof Flashing every decade can prevent leaks. Windows and doors can also be leak culprits if their caulking cracks or weather stripping deteriorates. Fast action with a 100% waterproof sealant, such as GE Advanced Silicone Window & Door Sealant, is essential upon discovering leaks. Deck attachments, like bolts or screws securing decks to homes, can rust or loosen, allowing water to seep into foundations. Applying a sealant like DAP Alex Plus All Purpose Acrylic Latex Caulk around deck posts and replacing damaged hardware can prevent costly water damage. Roof valleys, where two roof sections meet, are critical for water runoff but are prone to leaks, especially in winter when trapped water can freeze and damage flashing. Keeping these areas clear of debris is vital. Foundation cracks are structural issues that must be addressed immediately to prevent moisture ingress. Sealing them with concrete sealant, such as DAP Dynaflex 230, and applying waterproofing paint like Drylok Concrete Floor Paint can seal porous foundations. Nail pops, occurring when shingle-securing nails rise, create gaps for water entry. Hammering them back in and sealing the area with an elastomeric roof sealant, such as Henry Elastometric Roof Sealant, is recommended. Finally, exterior walls with gaps or cracks, like deteriorating mortar or missing bricks, can allow water to enter, leading to spalling. Regular inspections and timely repairs using caulk or sealant, like DAP Kwik Seal, are crucial to prevent further damage. #HomeMaintenance #LeakPrevention #RainySeasonPrep #Waterproofing #ExteriorHomeCare #DIYHomeRepair #PropertyProtection #HomeImprovement

The summer solstice in the Northern Hemisphere brings a combination of humidity and dryness, with intermittent rain showers followed by periods of intense heat. These climatic variations can lead to an increase in wall moisture, potentially compromising building safety and structural integrity. Modern construction techniques, aiming for greater energy efficiency and airtightness, paradoxically reduce natural moisture movement and drying within the building envelope. If unaddressed, this trapped moisture can cause issues such as mold growth and the deterioration of building components. Maintaining a consistently dry wall assembly is crucial for inhibiting mold development and preventing damage to wood and wood products, thereby preserving structural integrity. Wall assemblies incorporating a 25-mm (1-in.) air space can facilitate rapid drying, which helps prevent bacterial growth and insect infestations. To better understand the performance of wall assemblies in mixed-humid climates, the U.S. Department of Housing and Urban Development (HUD), in collaboration with the U.S. Department of Agriculture’s (USDA) Forest Products Laboratory and the Brick Industry Association (BIA), conducted a year-long field study. This study, titled "Moisture Performance Study of Typical Residential Wall Assemblies," was prompted by an increase in moisture-related problems in new residential homes and the widespread use of absorptive claddings in moist climates. The research evaluated eight common siding types: vinyl-sided walls, stucco-clad walls with one layer of felt, stucco-clad walls with two layers of felt, stucco-clad walls with vented cladding, stucco walls with plywood sheathing, walls clad with manufactured stone, fiber-cement siding walls, and brick veneer. The primary objective was to assess how these wall assemblies performed under prolonged heat and moisture, and how design factors influenced the durability of energy-efficient walls. Throughout the 12-month testing period, 44 sensors were strategically placed on the wood framing or sheathing of each sample to monitor moisture content, temperature, and relative humidity (RH) at various test points. Data on natural elements like precipitation and wind-driven rain, as well as outdoor and indoor temperatures and humidity, were recorded. The sensors were distributed across the sampled walls to account for temperature variations, such as cooler conditions near the ground or warmer areas near the roof. For accuracy, each sensor transmitted new readings every 30 minutes. Researchers also performed controlled water injections behind the cladding to assess drainage capabilities and utilized computer simulations to predict moisture levels in terms of magnitude and seasonal fluctuations. The study concluded that all tested assemblies remained below the industry-recognized 16 percent moisture content threshold. Walls with an air gap showed no sustained increase in moisture, highlighting the importance of a second layer of water-resistive barrier (WRB) for stucco when bulk water penetrates behind it. Specifically, stucco-clad walls with two WRB layers experienced virtually no increase in moisture, whereas those with a single WRB layer saw increases of up to 3.5 percent. Wall orientation and solar exposure were critical factors, with north-facing walls consistently showing higher moisture and humidity readings than south-facing walls of the same construction. Wall temperature and air circulation were identified as key factors for lower moisture content, with higher temperatures leading to drier conditions and air movement controlling drying capabilities. While wall penetrations generally did not significantly alter moisture performance, north-facing walls with manufactured stone and both north- and south-facing stucco-clad walls with plywood sheathing exhibited the poorest performance, having the highest initial moisture content and the slowest drying times. Brick veneer wall assemblies, owing to their typical construction with a nominal 25-mm air space, proved to be the most consistently dry, maintaining lower humidity in the wood stud wall cavity. The 25-mm air space facilitated rapid drying, preventing bacterial growth that damp wood might encourage. Additionally, darker claddings like brick maintained the highest wood stud wall cavity temperatures. The lower humidity achieved by brick veneer wall assemblies meets the American Society of Heating, Refrigerating, and Air-conditioning Engineers (ASHRAE) 160 criteria for minimizing mold growth. Industry experts emphasize the importance of proper ventilation for moisture control, especially in hot and humid climates where wall assemblies must resist bulk and vapor water intrusion. Factors such as cladding type, climate, geographic orientation, and wall assembly are all crucial considerations, with annual rainfall serving as a guide for determining the necessary level of moisture management. Regardless of location, brick wall assemblies effectively promote dryness, contributing to long-term structural integrity. #BrickCladding #MoistureControl #BuildingEnvelope #WallAssemblies #ConstructionDurability #EnergyEfficiency #MoldPrevention #BuildingScience