To waterproof, strengthen, and preserve the overall appearance of your basement cinder block walls, seal the blocks permanently against moisture and efflorescence with RadonSeal Plus Penetrating Concrete Sealer.Dec 3, 2019
How do you seal a cinder block exterior wall?
You can use a product like RadonSeal Plus Penetrating Concrete Sealer to help waterproof and preserve the overall look of your wall. It will help permanently block the elements like moisture and water. It's fairly easy to apply if you know your way around the house.Nov 5, 2018
How do you apply sealer to a block wall?
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.
What do you use to seal concrete blocks?
Ion-Bond Armor is a self-reacting penetrating concrete sealer, which will also disappear into the concrete, where it bonds and internally cures to seal the concrete even tighter. For more porous concrete like cinder blocks, we strongly recommend using Ion-Bond Armor as the second cinder block sealer.Dec 3, 2019
How do you fill gaps in cinder blocks?
Mix together in a bucket one part Portland cement, three parts sand and enough water to make a stiff patching compound. Fill the hole with the patching compound. Use the corner of a trowel or your finger to pack the compound into the hole, making sure it is completely full.
Can You Use Flex Seal on cinder blocks?
Flex Seal can be used on almost every surface: wood, metal, tile, concrete, masonry, fabric, glass, plastic, aluminum, porcelain, drywall, rubber, cement, and vinyl.