Chimney Crown Repair Waterproofer: What It Is, When You Need It, and How It Works
A chimney crown repair waterproofer is a flexible, elastomeric coating applied to a cracked or aging chimney crown. It seals surface voids, bonds to masonry, and creates a vapor-permeable waterproof barrier that blocks rain and ice while allowing trapped moisture to escape. Professionally applied, it costs $175–$900 and lasts 10–15 years. A cracked chimney crown […]