Concrete Sealer White Haze

Reasons for sealer issues.

Concrete sealer white haze.

This happens to sealers that are not breathable or over applied. Efflorescence is normally worn off or washed away on unsealed concrete surfaces. Since the reduced levels have become effective we have seen many many formula changes. Brush up on your knowledge by downloading a free copy of our sealing gone wrong slideshare.

If your sealed surface turned hazy or white it s most likely due to excessive moisture. Efflorescence is caused by vapor migrating through the slab bringing soluble salts to the surface of the concrete. To fix you will need to remove the sealer with a concrete or paver sealer stripper. The sealer puddled in low areas and was overapplied as result.

The main ingredient of a stamped concrete sealer stripper methylene chloride has now been banned for consumer use in the us. Today the current voc compliant sealer gives off less than 400 grams per liter. Unfortunately stamped concrete sealers sometimes fail by discoloring and turning milky white or yellow in color and will need to be chemically stripped to fix. Thick coats of sealer or a buildup of coats applied over the years will cause moisture to become entrapped under the sealer and in time the sealer debonds from the concrete.

Thinly applied acrylic sealer allows this to happen. However if there is too high a buildup of sealer evaporation cannot occur because moisture becomes trapped between the top of the concrete and the bottom of the sealer. It covers topics like. The sealer turned white every time it got wet.

This makes the sealer turn white or cloudy a phenomenon called blushing. There are a number of reasons this could have occurred. Efflorescence is the white powdery substance on the surfaces of unsealed concrete and the white blush seen with sealed floors. Sealer turned a white or cloudy color a white or cloudy color is caused by moisture that is trapped inside the sealer.

If the problem is ongoing any fix will only be temporary. Trapped water moisture and over applied sealer trapped moisture under the sealer is the most common reason that the sealer has turned white. There is a lot to know when it comes to sealers.