Solution: To fix you will need to remove the sealer with a concrete or paver sealer stripper. Trapped moisture under the sealer is the most common reason that the sealer has turned white. This happens to sealers that are not breathable or over applied.
How do you fix blotchy sealer on concrete?
In order to prevent scratching on an interior application, use a floor wax for an additional wear layer of protection. In order to fix existing scratching, wipe Xylene on the area and reapply an extremely light new coat of concrete sealer. Blotchy and Dark Concrete: Blotchy concrete can result from over application.
What does Xylene do to stamped concrete?
It is readily available at any home center, paint store, or hardware store. By applying a coat of straight xylene, one breaks down or re-melts the coat of sealer that is already on the surface. When the xylene evaporates from the reconstituted sealer, it leaves the acrylic solids crystal clear and shiny like new.
Why is my concrete sealer blotchy?
Most sealers need 12 to 24 hours of dry time before application, especially when a large amount of water is used in the cleaning process. So in this case, moisture was trapped under the sealer, causing the white, blotchy haze.
Why did my sealant turn white?
Sealer Turned A White or Cloudy Color A white or cloudy color is caused by moisture that is trapped inside the sealer. However, if it’s too hot and too humid, then also it’s possible the sealer surface could dry faster than the moisture can escape. The sealer was applied too thick.
Can you apply concrete sealer over old sealer?
A: Yes! Old concrete can be sealed for the first time or resealed if it has been previously sealed with a concrete sealer. (Solvent based acrylic concrete sealers can be applied on top of previous solvent based acrylics). Once a previous sealer has been removed you are then going to want to clean the concrete.
What should I do if my concrete sealer is dry?
If the the moisture covers a major part of the area – but it’s trapped in the surface and not deep, and the sealer has only been down for 1-2 days – then all you need to do is simply spray the Xylene onto the surface. The Xylene will quickly open the sealer up and allow the moisture to escape, causing the sealer to dry a clear color.
Why is my concrete sealer turning a cloudy white color?
The ideal environment is a warm temperature (70-80 ℉) and low humidity (50% or less). If the temperature is too low (less than 45 ℉) or the humidity is too high (above 65%), surface crust could form before the water can completely evaporate, thereby trapping the moisture and causing the sealer to dry a cloudy white or powdery color.
What’s the best way to fix a sealer problem?
Turn off all gas and heat sources. Then pour Xylene or a citrus stripper onto the concrete. Let it sit until the sealer is softened. Apply more Xylene or stripper and scrub the sealer using a stiff straw scrub brush on a broom handle, until the solution re-liquifies.
What to do about white spots on concrete deck?
Before resealing, we cleaned the deck with a mild acid wash, neutralized, and then allowed the sealer to dry. We then applied one coat of sealer diluted with xylene followed by a second coat rolled on full strength. What is causing the white spots, and what percent of acrylic sealer or type of sealer do you recommend for a stamped pool deck?
