This typically happens to stamped concrete or smooth decorative concrete surfaces.
Stamped concrete sealer bubbles.
If necessary apply two thin coats instead of one thick coat.
Concrete sealer blisters and bubbles as well as concrete sealer whitening are caused by moisture.
The pressure causes the sealer to bubble as you see on the left or in extreme cases as on the right it blasts the sealer off the surface off the concrete.
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.
A xylene bath lightly soaking the problem area with a xylene solvent and back rolling is the first step.
No need to waste all that sealer or create more problems if it doesn t work.
Sweep or blow off the dirt and grime wait until there is not any direct sunlight.
You can learn more about sealing and repair of blisters and bubbles by calling the technical department of most any major sealer manufacturer.
Adhere to the manufacturer s.
Use chemmasters specially formulated bubble resistant products like polyseal ez and stamped decorative concrete.
Applying a solvent to reset the sealer and melt the bubbles.
For any exterior stamped concrete that will be sealed and especially pool decks i have a few hard fast recommendations.
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.
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.
However if bubbles continue to form then try sealing during a cooler time of year.
Use light colors for the slab.
After the concrete hardens this water escapes the concrete as a gas water vapor.
Don t over apply sealer which may trap solvents and form bubbles.
When concrete is freshly poured it has a high water content mixing water.
Another option if blisters form while applying is to use a leaf blower.
Unfortunately when applied incorrectly or overapplied you may have issues with bubbles forming in the sealer.
Most decorative concrete sealers are quite sensitive to moisture.
Whose fault was it.
As a last resort the surface can be stripped of all sealer cleaned and resealed.
