Sealing Old Concrete Basement Walls

Only apply the sealer to basement walls that are bare concrete or brick.

Sealing old concrete basement walls.

This will seal the pores of the concrete and stop moisture from seeping through. Concrete is a porous material when fully cured. Apply the sealer to the basement walls using a brush roller or garden type sprayer. When insulating concrete basement walls a good idea because concrete basement walls are often cold use rigid foam board insulation if the insulation will come into direct contact with the.

Many solutions for sealing basement walls and floors are do it yourself although a few may require the help of a professional. Do not apply a sealer over painted surfaces because the sealer will not penetrate properly. A pump sprayer is all you need to apply this sealer and it s good for about 10 to. The randonseal plus deep penetrating concrete sealer seals the concrete against basement moisture by penetrating up to 4 inches and internally sealing the concrete it blocks the micro pores and capillaries to prevent water vapor water spillage radon gas and efflorescence directly through the basement floor or walls.

These efforts combined with proper above ground drainage will do a lot to prevent moisture from coming through the walls. In order to stop a leak from causing further problems it is necessary to first identify the leak. Concrete by itself is worse. Seal the entire concrete wall with a waterproof masonry.

Patching cracks snap tie holes and the cold joint where the floor meets the wall is the only way sealing the basement will work. The most common type of basement wall sealer is a sodium silicate concrete sealer. I find that using hydraulic cement is only a temporary patch because the material is so brittle. If your foil test showed that water is soaking through your basement walls and leaving them wet seal the interior of the walls with a high quality waterproof paint such as drylok white extreme.

Then apply a coat of waterproof masonry cement to your basement walls. The best basement wall sealer to use to seal a basement wall will depend on the type of basement wall the condition of the basement wall and your reason for sealing. The cement will expand inside the fissures and create a water tight seal. There are several basement walls sealers that can be used to seal a basement wall.

If it s good enough for your front pathway then it s good for your garage or basement. The sealer hardens and strengthens the concrete to protect and reduce dusting and crazing.