Concrete Sealer White Haze

There is a lot to know when it comes to sealers.

Concrete sealer white haze.

The sealer turned white every time it got wet. Reasons for sealer issues. The sealer puddled in low areas and was overapplied as result. Efflorescence is normally worn off or washed away on unsealed concrete surfaces.

To fix you will need to remove the sealer with a concrete or paver sealer stripper. If the problem is ongoing any fix will only be temporary. The sealer was not completely dry when an additional coat was applied. There are a number of reasons this could have occurred.

The small air gap that now exists between the sealer and concrete causes the light to diffuse and create the grayish white cloudy look. Trapped water moisture and over applied sealer trapped moisture under the sealer is the most common reason that the sealer has turned white. Efflorescence is the white powdery substance on the surfaces of unsealed concrete and the white blush seen with sealed floors. Brush up on your knowledge by downloading a free copy of our sealing gone wrong slideshare.

Since the reduced levels have become effective we have seen many many formula changes. If your sealed surface turned hazy or white it s most likely due to excessive moisture. It covers topics like. This happens to sealers that are not breathable or over applied.

Today the current voc compliant sealer gives off less than 400 grams per liter. Sealer turned a white or cloudy color a white or cloudy color is caused by moisture that is trapped inside the sealer. Efflorescence is caused by vapor migrating through the slab bringing soluble salts to the surface of the concrete. 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.

This makes the sealer turn white or cloudy a phenomenon called blushing. Moisture vapor pressure contamination or over application of the sealer can cause this problem. The main ingredient of a stamped concrete sealer stripper methylene chloride has now been banned for consumer use in the us.