Encyclopedia & FAQ's

DIY Frequently Asked Questions / Masonry Waterproofing Paint


  • DIY Frequently Asked Questions / Masonry Waterproofing Paint')"> Coating used for masonry surfaces including stucco, concrete, brick, cement, etc.
  • Most masonry paints are acrylic latex-based. Oil-based paint is not recommended for masonry because of the residual alkalinity in the masonry.
  • Most latex-based masonry paints require a special pre-treatment or bonding primer to tie down old chalk and dust before application.
  • Rough surfaces should first receive a coat of block-filler. Acrylic elastomeric coatings bridge cracks and pinholes to provide the best waterproofing.
  • Powdered cement paints, which have a shorter exterior life than latex coatings, must be mixed with water. They can be applied only over a porous masonry surface such as brick, stucco or concrete, or over surfaces that have been previously coated with this same kind of paint. For proper adhesion, the old surface must be wetted down thoroughly and the paint applied to the damp surface.
  • Masonry paint can be waterproof as well as decorative. For best color retention, coat with a good acrylic latex paint 30 days after application of waterproof masonry paint.