Crack and Joint Sealant

Seals and waterproofs cracks in mortar joints

No water repellent can stop water from penetrating small holes and visible cracks, and because nearly every chimney has them, we developed Crack and Joint Sealant — a unique, breathable, silicone elastomer. Think of it as a paintable caulk. Use it for sealing minor cracks (up to 1/8”) and defects in mortar joints where the mortar and chimney are otherwise sound. This allows you to easily correct these defects without the time and expense of tuckpointing.

For best results, use Crack and Joint Sealant after a ChimneySaver treatment. If using ChimneySaver Water-Base, Crack and Joint Sealant can be applied immediately following application while the chimney is still damp. If using ChimneySaver Solvent-Base, allow it to dry completely before applying Crack and Joint Sealant. Crack and Joint Sealant dries in about six hours to a cloudy (milky white) film that will not significantly change the chimney’s appearance.

  •   10 Year Warranty
  •   Prevents Leaks Through Mortar Joint Cracks
  •   Seals Cracks Up To 1/8 Inch
  •   Compatible With ChimneySaver
  •   Breathable
  •   Easy Brush-On Application
  •   Soap And Water Clean-up
  •   Coverage Rate: 550 standard bricks, or approx. 100 sq. ft. of wall surface per 1/2 gal.
  •   Available Sizes: 1/2 gal. gallon containers
  •   Application Temperatures: Between 40° – 100° F
  •   Application Method: Brush
  •   Dry Time: 2-6 hours (allow 6 hours before rainfall)
  •   Cleanup: Soap and water
Size Approx. Weight Product Code UPC #
1/2 gal. pail 5 lbs. 300018 709057440646
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