What do you recommend to remove polyurethane spills from prefinished hardwood?
Some polyurethane can be the dickens to get to soften up. After polyurethane cures it’s actually a sheet of plastic. I recommend Citristrip Stripper it’s real user friendly and safe to use inside. As with all chemicals, be sure you have good ventilation though. Citristrip has a long open time and if conditions are right it’ll work for up to 24 hours. I would suggest applying a coat of stripper and letting it sit for a few hours, then apply another coat of stripper over the first one and cover the area with a plastic drop cloth. Let it sit overnight and try scraping. If the stripper has dried apply another coat and wait an hour and try it. Usually that will do the trick.
