Concrete sealer blisters and bubbles as well as concrete sealer whitening are caused by moisture.
Stamped concrete sealer bubbles.
Applying a solvent to reset the sealer and melt the bubbles.
A xylene bath lightly soaking the problem area with a xylene solvent and back rolling is the first step.
Whose fault was it.
As a last resort the surface can be stripped of all sealer cleaned and resealed.
After the concrete hardens this water escapes the concrete as a gas water vapor.
If bubbles run deep then the sealer is usually on too thick and a solvent bath along with back rolling may be needed.
Use light colors for the slab.
For any exterior stamped concrete that will be sealed and especially pool decks i have a few hard fast recommendations.
Use chemmasters specially formulated bubble resistant products like polyseal ez and stamped decorative concrete.
When concrete is freshly poured it has a high water content mixing water.
Adhere to the manufacturer s.
However if bubbles continue to form then try sealing during a cooler time of year.
If this does not work you will probably need to strip off some or all of the sealer.
Don t over apply sealer which may trap solvents and form bubbles.
Unfortunately when applied incorrectly or overapplied you may have issues with bubbles forming in the sealer.
You can learn more about sealing and repair of blisters and bubbles by calling the technical department of most any major sealer manufacturer.
Another option if blisters form while applying is to use a leaf blower.
Most decorative concrete sealers are quite sensitive to moisture.
Usually late in the day is best.
Sometimes reapplying the same sealer will fix the concrete blisters and bubbles again try this on a small area first.
Sweep or blow off the dirt and grime wait until there is not any direct sunlight.
No need to waste all that sealer or create more problems if it doesn t work.
How to fix bubbles in sealer if the temperature isn t too hot then apply a new coat of sealer to re liquify the existing sealer.
This typically happens to stamped concrete or smooth decorative concrete surfaces.
Concrete sealer bubbles solvent based acrylic concrete sealers are designed to enhance darken and give a sheen to decorative concrete surfaces.
Let the sealer sit overnight and dry properly.
