Before sealing a concrete block wall, it’s important to remove any white efflorescence using an efflorescence remover such as QUIKRETE Efflorescence & Rust Remover.
Once the wall has been cleaned, apply a waterproofing sealer to prevent more moisture from coming through the wall.
Waterproofing basement walls is a great way to reduce the infiltration of moisture into these spaces. But before you apply a sealer, it’s important to remove any efflorescence from the block wall.
A water based efflorescence remover is more effective than scrubbing the surface and requires less work. Once the surface is clean, you can apply a waterproofing sealer to prevent any more water from migrating through the wall.
These tips brought to you by Quikrete Cement and Concrete Products. It’s what America’s Made Of.