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I can bet you have seen quite a number of epoxy flooring with bubbles on them. You can find small bubbles, the size of the pinhead, or some large ones, that have an inch in diameter. You can find them in groups or scaterred around the floor. A phenomenon calle “out gassin” is what causes this. This usually happens in the tim epoxy paint is drying up. When the air gets hotter, it will expand and this is what creates those small bubbles under the coating we just made.

Application primer should be used to reduce the chance of bubble appearance. Also never apply the coating in direct rays of the sun and always use a drill of a slower speed when mixing the coating.

When a roller is used to apply the coating, it is better to use a medium roller. You need to take care how you apply the epoxy, make slow, gentle motions. This will be helpful in preventing bubbles from being formed in epoxy coatings.

Bubbles that are formed in epoxy floorings can be removed using grit sandpaper and a rotary scrubber. The first step is to roughen the area with some sandpaper. Then get on to some serious dust cleaning work. Then with a rag wipe the surface area with a strong solvent. When you finish this, apply one more coating. Another type of bubble observed is fisheyes. The silicone that remained on the surface is one of the reasons.

Use sandpaper of medium grit to clean this area in entirety. When you are finished with this, you can clean the entire place with solvent dipped rag. Now you can apply that epoxy coating you prepared for the session.

If there are bubbles in the entire epoxy flooring area then shot blasting or sand blasting may be considered. Use sand blaster to remove the epoxy coat from the area you are working on. Afterwards clean the problem area with acid. In case you are working on a very small area, you can isolate it. A new coating will have to be made after you repair the area in question.

Another cause of formation of bubbles in epoxy garage flooring is excessive moisture. Check this by breaking the bubble and try to figure out is there moisture inside it.