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DIY Guide to Masonry Coatings |
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There are a number of coating products made for masonry surfaces. These include alkali–resistant primers, masonry sealers, waterproofers and floor paints. In addition to these specially made coatings, common latex paint is a suitable coating for masonry including brick, cinder block and concrete walls. Alkali–Resistant PrimerAlkali–resistant primers are made using chlorinated rubber and are primarily used on surfaces that have a chronic problem with leaching alkali salts known as efflorescence. This is usually caused when water drips down along a building foundation. Masonry SealersMasonry sealers are normally clear and are used to prevent staining, stop sanding debris and to make cleaning the surface easier. The use of clear sealers is particularly helpful for interior exposed brick walls where the look of the natural surface is enhanced while making the wall smooth and debris free. Masonry WaterproofersWaterproofers are made by mixing portland cement with a latex paint base to create a thick coating that will block moisture from escaping. These coatings are used mostly on basement and exterior walls. When properly applied these waterproofers will bond with a masonry surface preventing future blistering and peeling. Use two coats on bare masonry and keep the coating moist with a light spray of water for 2 days as it cures. These coatings should not be applied over previously painted surfaces. Painting Masonry FloorsMasonry floor paints are available in epoxies, urethanes, latexes, alkyds and rubber–based enamels. Of these, the epoxies are the most durable and resistant to abrasion and sub–surface moisture. Urethanes and alkyd based floor paints work well in garages and workshops that see a lot of traffic. For interior basement floors in living areas, latex floor paint will work fine. | |
