How to Apply Masonry Sealer to Basement Walls
By: Danny Lipford
Sealing masonry walls in a basement can help reduce moisture, but it’s important to make sure the ground around the basement slopes away from the foundation and that downspouts are equipped with extensions or splash blocks to direct water away from the house.
You can apply masonry sealers to masonry basement walls with a paintbrush or long nap roller. Make sure to apply enough pressure to force the sealer into the masonry surface.
Once the first coat has dried, apply a second coat to the walls. Watch this video to find out more.
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Sealing the inside of basement walls is one way to keep out moisture. But it’s also important to keep water away from the outside by controlling run-off with gutters and sloping the soil away from outside of basement walls.
The inside of the walls should be clean and free from active leaks when you apply the sealer. Choose a coating designed to stop moisture that will adhere well to bare or painted masonry surfaces and has additives to combat mold and mildew.
You can apply these products with a brush or roller, but unlike painting, you need to apply some pressure during application of the first coat to force the sealer into the pores of the masonry. Once the second coat is applied, you should have an effective barrier to block moisture migration through the walls.
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