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Oct 23, 2020 · Efflorescence is the white powdery substance on the surfaces of unsealed concrete and the white blush seen with sealed floors. Efflorescence is caused by vapor migrating through the slab bringing soluble salts to the surface of the concrete.
Oct 6, 2020 · Got unsightly splotches on your driveway, patio, and garage floor? Here's how to remove concrete stains caused by paint, rust, dirt, oil, and pets.
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White stains or a white powdery coating on new concrete is not uncommon. Such discoloration, known as efflorescence, is caused by salts that are brought to the surface of new concrete by the natural curing process. The amount of these salts, and the resulting difficulty of removing these white stains, depends on many factors, including the amount o...
Wait 60 days before attempting to remove any white stains on new concrete. This will allow the moisture in the concrete to rise to the surface and evaporate, leaving behind the salts that cause the whitish discoloration. Attempting to clean the concrete before all the salts have risen to the surface may lead to a deposit of additional white residue...
The white residue on the surface of new concrete can be removed only with an acidic cleaner. Given enough time, acid rain can clean the majority of white concrete stains, but many homeowners do not wish to wait to remove the problem. Purchase an acidic efflorescence stain remover, available at hardware stores and home centers.
Lightly mist the concrete with water and then spray on efflorescence cleaner. Choose a moderately warm day, but if possible wait until the concrete is in the shade before spraying. Use a nylon-bristle brush to scrub the concrete once it has been sprayed with the cleaner. Wear gloves, eye protection and heavy clothing while scrubbing. Rinse off the ...
Apply a concrete sealer or concrete paint to the clean and dry concrete after the manufacturer's specifications. The sealer or paint will help the concrete last longer and should prevent any additional white residue from rising to the surface of the concrete.
- Larry Parr
Oct 13, 2021 · Dark, fuzzy, or stained concrete can age your space. Fortunately, it only takes a little time to whiten it so it looks new again. You've probably heard that pressure washing is great for getting your concrete white, and while that's true, you might try cleaning with a bleach solution first.
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Knowing how to stain a concrete floor begins by choosing a concrete stain that fits your needs. There are two types of concrete stain to choose from: acid-based and water-based. Acid-based formulas for are long-lasting and resistant to fading.
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