Winter Chimney Mortar Repairs
Cracked mortar and concrete around your chimney can make for a dusty ride down for ol’ St. Nick. So, seal them up. But how? And which products should you use?
Cracks Come…
But they don’t just go away on their own. Wind, rain, snow, sleet, hail, changes in temperature, reindeer on the roof – they all stress the mortar between the bricks or stone on your chimney and can lead to leaks. Make sure the smoke is going up your chimney, not out the sides. Seal up those cracks in the mortar with Sashco’s Mor-Flexx® textured caulk. It comes in colors that match standard mortar and concrete colors but easily stretches and compresses to move with your home. And once it’s there, it won’t let go. It really sticks, and since it’s textured, it blends in with the look of your concrete, mortar and other similar surfaces.
Leaks Anyone?
Leaks will naturally occur at the same time the concrete cracks. It’s easy to seal those leaks and keep your mortar repairs looking nice, even when the weather isn’t perfect. Just apply Sashco’s Through the Roof!® clear flexible, waterproof roof sealant. Like Mor-Flexx, it has extreme elasticity. But Through the Roof! is also ultra clear, which means people (like Santa) will see your chimney, not ugly black asphalt. It’s available in cartridges, for sealing gutters, flashing and smaller jobs, and brush-grade for repairs to shingles, vents and more!
Keep Cracks and Leaks from Coming…
Let Mor-Flexx and Through the Roof! help keep your chimney in tip-top shape year round.





