Chimney RX Crack & Joint Sealant is brush-able elastomeric sealant for mortar joints used to repair exterior cracks in mortar on chimneys, brick walls and between concrete or stone masonry units. The product seals larger cracks and other defects that cannot be corrected with water repellents alone. Crack & Joint Sealant seals crack up to 1/8" wide on brick faces and at mortar and brick joint interfaces to provide waterproof protection. It dries to a clear, translucent, milky film. Crack & Joint Sealant prevents water infiltration and subsequent damage, yet allows water vapor to escape. When applied to a properly prepared wall or chimney surface, Crack & Joint Sealant can solve tough leak problems without the expense of truck pointing or surface grouting. Use ChimneyRx Masonry Crack and Joint Sealant along with ChimneyRx Masonry Chimney Water Repellent to provide maximum protection. A one pint container will treat the mortar joints surrounding approximately 110 standard bricks, or approximately 25 square feet of wall surface.
- SEALS CRACKS & GAPS: ChimneyRx concrete crack filler repairs cracks up to 1/8” in mortar joints on chimneys, brick walls and between concrete masonry units while also sealing larger cracks and defects that water repellents alone can’t fix
- DURABLE WATERPROOF PROTECTION: Unlike traditional cement crack fillers, our elastomeric concrete joint sealant creates a long-lasting, weather-resistant barrier that blocks water while allowing moisture vapors to escape, helping prevent future cracks
- COST-EFFECTIVE REPAIR & WON'T ALTER MASONRY LOOK: Fix leaks without expensive tuckpointing or grouting; our brick mortar crack filler solution won’t noticeably change masonry appearance; a slight gloss may appear on dense surfaces but fades over time
- EASY APPLICATION & QUICK DRYING: Apply this concrete filler with a brush in 40-100°F temperatures; it dries in 2 hours to a clear, translucent, milky film, blending seamlessly for brick mortar repair
- EFFICIENT COVERAGE: One pint of this cement joint filler treats mortar joints around 110 standard bricks or 25 sq. ft. of wall surface, providing excellent coverage for masonry and concrete repair tasks
- SEALS CRACKS & GAPS: ChimneyRx concrete crack filler repairs cracks up to 1/8” in mortar joints on chimneys, brick walls and between concrete masonry units while also sealing larger cracks and defects that water repellents alone can’t fix
- DURABLE WATERPROOF PROTECTION: Unlike traditional cement crack fillers, our elastomeric concrete joint sealant creates a long-lasting, weather-resistant barrier that blocks water while allowing moisture vapors to escape, helping prevent future cracks
- COST-EFFECTIVE REPAIR & WON'T ALTER MASONRY LOOK: Fix leaks without expensive tuckpointing or grouting; our brick mortar crack filler solution won’t noticeably change masonry appearance; a slight gloss may appear on dense surfaces but fades over time
- EASY APPLICATION & QUICK DRYING: Apply this concrete filler with a brush in 40-100°F temperatures; it dries in 2 hours to a clear, translucent, milky film, blending seamlessly for brick mortar repair
- EFFICIENT COVERAGE: One pint of this cement joint filler treats mortar joints around 110 standard bricks or 25 sq. ft. of wall surface, providing excellent coverage for masonry and concrete repair tasks
