Maintain Beautiful Brick & Masonry
Brick, concrete, stone and other masonry products are porous; therefore, water can be a menace to its longevity. These surfaces are at some risk of cracking and spalling due to the freeze/thaw cycles. Waterproofing the porous surface with a dependable waterproofer can extend the life of the surface and help keep it looking great longer.
Testing the brick, concrete or masonry surface to see if it needs protection is essential before starting your project. Be sure to check all steps and patios.
- Take a knife and scrape along the edge of a brick/masonry wall or concrete patio. If the surface flakes and crumbles, it's already been weakened by water damage and needs immediate attention.
- You can also perform the "splash test" by splashing water against the brick, concrete, masonry surface and if the area becomes dramatically darker or immediately absorbs the water, it is time to waterproof your surface.
A white powdery residue - called efflorescence — often results when water soaks into a brick (or concrete) surface and dissolves the alkaline salts. When the water evaporates, the salt deposits remain on the surface. Waterproofing will help avoid this condition. Before beginning any project on a hard surface like brick, concrete, or other masonry surfaces, you have to be sure there are no cracks or pits, as these may be part of a bigger problem - spalling. If there are any large cracks or damage, you will need to patch the spots before waterproofing it.
Preparation is Critical
Cleaning is a crucial step to long-lasting protection for any type of surface. Having a clean surface prior to applying a sealer will allow for the best waterproofing performance and improve the durability of the coating. The surface should be clean of all contaminants. For a gentle, oxygenated chlorine-free cleaner concentrate, you can use Thompson's® WaterSeal® Oxy Foaming Action Exterior Multi-Surface Cleaner, which will remove stains from dirt, mildew, algae & fungus from your porous brick, concrete or masonry surface.
Applying the Coating/Treating the Surface
When applying a coating, be sure to read all label instructions carefully. For the best results, do not mix with other waterproofing products. It is useful to have a small trial patch prior to completing the entire project. This product should only be used with adequate ventilation.
- Be sure to apply the waterproofer to your brick, concrete or masonry surfaces in shaded areas.
- It is important to protect your brick, concrete, or masonry surfaces that are in direct sunlight as well as shaded areas. By using Thompson's® WaterSeal® Waterproofers, you will provide a mildew resistant coating with the most powerful protection against water damage
TIP: DO NOT apply a surface coating product like a varnish or polyurethane to exterior brick, concrete, stone or other masonry surfaces. Most varnishes and polyurethanes cause discoloring and make these areas slippery when wet.