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‘It’s a tough lesson to learn’ – brick homeowners must complete this outdoor maintenance task to avoid costly repairs and structural failure
The article emphasizes the critical importance of regular mortar inspection and repointing for brick homeowners, particularly at the start of summer, to prevent significant structural damage and costly repairs. While brick houses are generally considered sturdy, the mortar that binds them is susceptible to degradation, primarily due to freeze-thaw cycles during winter. This phenomenon occurs when moisture seeps into the mortar joints, freezes, expands, and then thaws, leading to cracks and crumbling. This issue is not merely aesthetic; compromised mortar can allow water to penetrate behind the brickwork, causing internal leaks, mold growth, and further structural weakening over time.
Experts, including Kevin Brown, a heritage property renovator, and Thomas Borcherding, owner and lead designer of Homestar Design Remodel, highlight that mortar often fails before the bricks themselves. Repointing, the process of removing deteriorated mortar and replacing it with new, appropriately matched material, is presented as a vital maintenance task that can extend the lifespan of brickwork and the home by decades. However, repointing is a specialized skill, and the article strongly advises against DIY attempts unless one possesses extensive experience, especially for older homes that require specific mortar compositions like lime-based mortar rather than Portland cement. Using the wrong type of mortar can exacerbate problems for historic brick structures.
The duration and cost of repointing projects are variable, depending on factors such as the size of the area, accessibility, weather conditions, the potential need for scaffolding, and the level of detail required for matching historic brickwork. Louis Vierra, a general contractor, estimates that most residential repointing jobs take between three and seven days, with costs ranging from $8 to $30 per square foot. A full exterior wall could incur expenses upwards of $3,000 to $15,000 or more. Homeowners are urged to select licensed masons or general contractors with proven experience in repointing, verify their insurance, review past projects, and ensure they use suitable mortar types.
Preventative measures are also discussed, focusing on minimizing moisture exposure to brickwork. This includes promptly addressing flaking brick and mortar, repointing with breathable mortar, regularly cleaning gutters, and repairing any broken gutters to ensure proper water drainage. Additionally, the article cautions against using waterproof sealants on exterior brickwork, as these can trap moisture and accelerate deterioration. Checking and cleaning window weep vents is another recommended task to prevent moisture accumulation and warping. The article concludes by stressing that incorporating brick inspections and repointing into a regular outdoor maintenance schedule is the most effective way to safeguard a home from expensive future repairs.
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