How To Fix Concrete Sealer Bubbles

Concrete Sealer Bubbles

Concrete Sealer Bubbles

Solvent based Acrylic Concrete Sealers are designed to enhance, darken, and give a sheen to decorative concrete surfaces.  Unfortunately when applied incorrectly or over applied you may have issues with “bubbles” forming in the sealer. This typically happens to Stamped Concrete or smooth decorative concrete surfaces.

When a solvent-based acrylic sealer is applied, some of the sealer penetrates into the porous concrete. If the application is too thick, or if too many coatings are applied, the solvent is not able to evaporate before the sealer dries. When that happens, the solvent gets trapped and eventually creates enough pressure that it forces its way out, creating the bubbles.

Tips For Applying a Solvent Acrylic Sealer:

  • Follow the manufacturer’s directions on the proper spread rate
  • Do not over apply. Adding too much sealer is not better and may create issues
  • Concrete porosity differs. The more porous the concrete is, the more sealer can be applied
  • If applying more then 1 coat, allow the coatings to dry thoroughly between applications

So what to do if you get the sealer “bubbles? Here are some steps to take to try and remedy the situation.

  1. Sweep or blow off the dirt and grime
  2. Wait until there is not any direct sunlight. Usually late in the day is best.
  3. Applying a solvent to reset the sealer and “melt” the bubbles.
  4. Let the sealer sit overnight and dry properly

Note: The bubbles may still come back. In many cases the above steps will fix the issue. If this does not fix the bubbles from reforming, you will need to strip off all of the sealer and start over.

20 Responses to “How To Fix Concrete Sealer Bubbles”

  1. kandy says:

    2 years ago we had steps poured and a aggregate patio. the steps were poured in a colored concrete. when they came back to seal it all it started to sprinkle so they did everything in a hurry and left. they told us to do this process again the next year. we tried but many mistakes were made and the end results is it bubbled and now looks pitted, dull and dirty. can you tel me how to fix and what product to use to give it all the wet look.

    • Concrete Sealer Help says:

      Kandy, most likely you will need to strip all the sealer off and start over. Do a search online for \”Concrete Sealer Strippers\”. Once removed you could use the SuperSeal25 or SuperSeal30

  2. kandy says:

    will this provide the wet look i would like and can they be tinted?

  3. Eleanor says:

    I had my pool patio done over with decorative concrete in a stone pattern, various colors about 2 yrs ago. Last week a bubble popped up, opened and you can see right through below the cool deck that was underneath it. It is about 2 inches in circumference. I think the company is gone now, I can't find them. How do I fix this and I know you don't have a crystal ball but can I expect this to happen all over the patio?

  4. Denise says:

    I have a 30' stamped concrete driveway that is pitting and crumbling in different places. It's been sealed regularly. Any suggestions?

    • Concrete Sealer Help says:

      Denise, you cannot fix or stop the pitting with sealing. Nothing will stop this. It is a bad install. Sorry :(

  5. DeeDee says:

    I paid someone to stain and seal my new concrete floor and it is terribly bubbled. Is it possible to somehow sand the sealer off, or down? I really don't want to have to strip it. The drywall and doors are already installed.

    Thanks!

  6. Elaine says:

    How do you know if the sealer is solvent or water bases?

  7. Elaine says:

    I bought a house and the stamped concrete looks that the previous owners painted it with concrete paint. Can this be corrected and resealed??

  8. Jody says:

    I put down the 2nd coat of sealer on my stained concrete floor in a few areas it bubbled (which I was told was from applying the sealer too thick). Was told to use a paint brush and put Xylene on the bubbled areas. I did a thin application of the Xylene but some of the bubbles are still VERY visible – what can I do to fix this issue?

  9. michelle5582 says:

    we recently resealed our stamp patio and today woke up the white patches and lots of bubbles, how do we fix this?

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