
How to get bubbles out of dried polyurethane. So if you have a bubble incident or are just looking for ways to avoid them read on for more information. I didnt shake the can and the brush didnt leave any bubbles behind. But large bubbles formed in the second coat about 10 minutes after i applied it. Sanding out bubbles step 1 scuff sand the bubbles with 120 grit or finer sandpaper depending on what youre finishing.
The first coat on the top looked good too. Bubbles in polyurethane topcoat what causes bubbles in polyurethane topcoats applied by. How to remove bubbles from polyurethane finish. The only remedy is to sand out the bubbles and apply another coat of finish more carefully this time.
We sanded and stained a lot of kiln dried oak for stairs and when the poly went on. After i stripped sanded and stained my solid oak kitchen table i brushed three coats of polyurethane on the underside.