Polyurethane peeling off

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Q: I have 2000 square feet of hardwood floors, and in some areas I have the poly / polyurethane peeling off. So far I have made one huge mistake: I cleaned all the floors with ammonia, and that took the water, dirt, and wax off of them. Then I used an oil based product called Dura Seal on two rooms. It made a huge difference. I then added a water based poly to one room and it dried great, but you could scratch off the poly. I do not know what to do about that. I do not want to sand my entire house. Can you put a stain over old oil based polyurethane and then use an oil based poly? Any suggestions?

A: You cannot apply either oil or waterborne finishes over top of a floor that has wax on it. If you intend to stain, the entire coating, whatever it may be has to be removed to bare wood first.

You would actually save money and your floors by hiring a professional.

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