CrownSeal Trowelable Sealant - Official Home -ChimneySaver
CrownSeal is a proprietary elastomeric coating that forms a flexible, waterproof membrane specifically formulated to repair and protect chimney crowns from water intrusion. This thicker material can cover larger cracks in chimney crowns and is applied with a trowel. 10 Year Warranty. Permanently Flexible. No Bonding Agent Required.