Q: A job we sanded was first “popped” then stained. After the first coat of poly I noticed bubbles coming out of certain boards. And the bubbles only seemed to be coming out of the soft grain. I did a light sanding and put on another coat of oil-poly satin and had the same issue. This time these were different boards. There were about a total 4 boards with this issue. It seemed like the grain was rejecting the poly. They were BB sized bubbles.
I fixed these boards now everything is OK. I was wondering why this could have happened. Conditions were mid-60s with all windows closed. Applied with a roller.
A: Not sure. If you had left them, would the bubbling have settled down? If this was a re-sand it is possible there was some sort of contaminant in the soft grain that was dancing with the polyurethane. There are plenty of technically strange events in the flooring trade. We all get a turn now and then.
Related Questions
Air bubblesI have just sanded doing the 36, 50, and 80 grit. I stained it as well. However, when I rolled the first coat of oil based polyurethane I got bubbles everywhere. Is there a way to get rid of the bubbles with out re-renting a buffer, etc.?
Small bubbles on coats of finishWhat can I do on the final coat to help decrease the bubbling? These bubbles are very tiny some are pin heads, smaller than pepper corns. I am going to use a sanding screen on this last one, probably should have on the first coat instead of paper. Went through…
Bubbles, dust and debris in finishI have just had professionals install my new red oak wood floor. There are bubbles on the floor (seems like there is a mix of debris - like dust, splinters and lint as well as just air bubbles in the Poly). They are telling me that this is normal, and…
(Hot/humid summer) air bubbles in finishQ: We had our floors sanded and poly'd. After 2 coats we had air bubbles in finish. The company came back, buffed and reapplied the poly. Now we have even more air bubbles than previously. Why has this occurred? Should we have someone else come to fix it? Is this…
Dark grainI just had my pre-finished red oak floor refinished with what should be the same color (gunstock) and 3 coats of oil-based poly. The wood grain is so much more noticeable than it was in pre-finished form, and I don't like it as much. Will this difference fade some over…