This post was most recently updated on February 18th, 2021
Tips To Fix Concrete Sealer Bubbles
We often hear about the appearance of pesky bubbles that appear in finished concrete sealer projects. In this updated article, we explain how to avoid concrete sealer bubbles, and if they appear, how to fix them. If you have encountered concrete sealer bubbles and have any suggestions or have any questions, please comment below.
Solvent-based Acrylic Concrete Sealers are designed to enhance, darken, and give a sheen to decorative concrete surfaces. Unfortunately, when applied incorrectly or overapplied 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.