Q: My third coat of polyurethane on my hardwood floors came out blotchy, high sheen to low sheen. How do we fix this?
A: There are numerous elements that can all affect how a coat dries and how it looks after.
The only thing I can suggest is to lightly buff or abrade the last coat and clean up thoroughly. Before applying the next, make sure the finish is stirred very well. It is OK to have some windows open to vent the rooms, but you don’t want a lot of air movement in the rooms until the finish has had a chance to flow to level and set up. Apply thin coats.
Similar Q: We just redid our wood floors. After sanding and staining we applied gloss poly then sanded/buffed.. applied 2nd coat of gloss ploy, then lightly sanded. Then we applied the final coal in semi gloss poly. 24 Hrs later the room is splotchy, gloss and dull… the whole dining room still looks shiny. The polyurethane looks blotchy. Do I re-apply a 4th coat again in semi gloss?
A: It sounds like you didn’t stir the semi gloss adequately. The hands down best, most reliable floor finish I have ever used in Poloplaz Primero. As there lead sales manager said: ‘We spent a little extra in research to find a way to help keep the flattening paste suspended in the finish.” I think I would give the 3 coats at least 2 weeks to harden with good ventilation before attempting another coat.