CrownSeal is a proprietary elastomeric coating that forms a flexible waterproof membrane for your chimney cap repair. Product is specifically formulated for chimney repair and to protect chimney crowns from water intrusion.

CrownSeal can also be used for a variety of horizontal and vertical exterior waterproofing applications. It dries to a natural concrete/mortar appearance. CrownSeal is an extremely long lasting and durable coating that requires no mixing or special bonding agents. Make sure to follow instructions on label to find out how to repair chimney crowns with Crown Seal.

• CrownSeal can be used wherever a long-lasting exterior waterproof membrane is needed, such as chimney crowns, chimney corbels, the tops of masonry walls, including parapets, and stucco repair. Other uses include masonry window sills where bricks are laid in a soldier pattern at the base of windows.
• CrownSeal can be used as a bonding mortar to replace badly spalled brick units or for parging over brick faces that may have spalled, if remaining brick is solid. Product can be used for crack repair, surface grouting and tuck pointing.
• CrownSeal can be colored using small amounts of standard mortar dye. If dyes are used, transfer material to be colored from the original container into a clean mixing container. Before adding dye, let product stand uncovered for approximately 10 minutes to thicken. Add mortar dye one or two drops at a time, and mix with trowel or paddle mixer and drill until desired color is reached.

Coverage: 14-18 sq. ft. per gallon at 1/8" thickness, 7-9 sq. ft. at 1/4" thickness
Available Sizes: 2 & 5 gallon containers
Application Temperatures: 45° - 95° F
Application Method: Trowel, 1/4" square notch trowel and 4" nylon paint brush
Dry Time: 4-6 hours (above 45° F), 24 - 72 hours (below 45° F)
Cleanup: Remove excess CrownSeal with a stiff nylon scrub brush and water