Air Bubbles In Wood Floor Finish

We are having our pine and oak floors refinished professionally.

Air bubbles in wood floor finish.

Once the finish has set up turn the air back on but ventilate the entire house. The dust from the floor buffer can land and attach onto surfaces such as fabric furniture. That causes the finish to become pockmarked with little craters called fish eyes that are easily mistaken for bubbles. They are more common with a water based polyurethane product than a solvent based one because the water based product tends to foam and dry more quickly.

One place you should never find bubbles is in your hardwood floors. This happens to floor finishers who drag the finish applicator aggressively and then must stay off the floor until the finish dries. Bathtubs champagne ocean foam to name a few. Air flow will aid the finish to cure.

After 2 coats were put on there were numerous air bubbles. Step 1 remove everything within the room where you will be working on the floors. So our guy came to rebuff and put a 3rd coat of poly on. The only way to correct this issue is to strip the finish down to bare wood wipe it thoroughly with denatured alcohol and restain.

In my opinion the air bubbles that have appeared after the last coat of finish i call them fish eye bubbles are not necessary and not likely the fault of the person applying the polyurethane. Next brush on a couple of coats of dewaxed shellac such as zinsser s sealcoat. A finish can form bubbles only when it is drying and a professional refinisher usually takes care of them before considering the job complete. Right away we see the same air.

If you missed the bubbles while the varnish was fresh you may find the finish mottled with tiny craters or hardened bubbles. Generally as each application of finish is applied it tends to dry faster.