Failure to adequately prepare surface by removing all previous efflorescence.
Excess moisture escaping through the exterior masonry walls from the inside.
Failure to prime new concrete and masonry surface.
If excess moisture is the cause, eliminate the source by repairing the roof, cleaning out gutters and downspout, and sealing any cracks in the masonry with high quality, water-based all-acrylic or siliconized acrylic caulk. If moist air is originating inside the building, consider installing vents or exhaust fans, especially in kitchen, bathroom and laundry areas.
Remove the efflorescence and all other loose material with a wire brush, power brush or power washer; then thoroughly rinse the surface. There are also commercially-available efflorescence removers that can be used for easy removal of efflorescence.
Apply a quality water-based or solvent-based masonry primer & sealer and allow it to dry completely; then apply a coat of top quality exterior house paint, masonry paint or elastomeric wall coating. (Elastomeric wall coatings should not be applied to surfaces that may have excessive moisture coming through, such as soil retaining walls, uncapped walls or interior basement walls).
* Important Disclaimer: Coverage calculator results are to be used only as estimates.
Behr Process Corporation cannot guarantee that you will achieve proper results without
verifying your measurements and assumptions.
WHAT SHEEN DO I NEED?
About Interior Paint Sheens
Get the look you want and the protection you need for any room in your home.
A flat sheen has a non-reflective finish that touches up well and hides minor surface imperfections.
Low-traffic areas; interior walls and ceilings
A matte sheen has a low-luster, reflective finish that is durable, easy to clean, touches up well and also hides minor surface imperfections.
Low-traffic areas; interior walls
Family rooms, living rooms, kids' rooms, bathrooms, dining rooms, ceilings
An eggshell enamel sheen has a soft, velvety appearance that resists dirt and grime, as well as mildew.
Family rooms, living rooms, bedrooms, kids' rooms, hallways, dining rooms
A satin enamel sheen has a pearl-like finish that's easy to clean.
All interior surfaces; moderate- to high-traffic areas
Family rooms, living rooms, bedrooms, kids' rooms, hallways, kitchens, bathrooms, doors, windows, trim, cabinets, shutters, interior furniture
A semi-gloss enamel sheen is sleek and radiant resisting mildew, moisture and wear.
Cabinets and trim; high-traffic, high-moisture areas