Unlike acrylics, silicones and other waterproofing sealers, water repellent provides protection that penetrates the surface level of your chimney. Chelsea's Chimney in Gaithersburg, MD uses a chimney water repellent that allows for penetration of up to one-fourth of an inch. Its active ingredients then form a chemical bond with the chimney materials to create a strong, effective layer of protection.
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Applying a long-lasting chimney water repellent is a great way to protect and preserve your chimney. This can help prevent: