Floor Finish Bubbles

What would you do.

Floor finish bubbles.

Carefully remove the finish clean the space let it dry then apply two to three new coats of finish until the color of the finish matches the rest of your floor. Outgassing is a site condition that allows air or gas from the concrete substrate to escape in excess and cause blisters craters bubbles or pinholes. Below we ll look at the causes and find out how to prevent these issues. This happens to floor finishers who drag the finish applicator aggressively and then must stay off the floor until the finish dries.

In the sun a few spots of the finish have bubbled and cracked. When bubbles appear in a freshly applied epoxy coating the most common culprit is something called outgassing. Unfortunately the formation of blisters and bubbles in an industrial floor coating is a fairly common problem. I would contact the installer and manufacturer.

If you missed the bubbles while the varnish was fresh you may find the finish mottled with tiny craters or hardened bubbles. This method gets rid of the finish without removing any of the wood beneath. As such it is only effective with polyurethane finishes. I have a maple laminated floor.

Causes of floor coating blisters. Bubbles where sun hits laminate floor. The floor was guaranteed for 25 years. After the floor finish has hardened enough to sand it refinishers pass over it with a floor buffer fitted with a 120 or 150 grit sanding screen to remove bubbles before applying another coat.