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I’m doing a gut reno in one of my vacate units and the issue that I’m running into is with the sub-floor. I have original pine plank sub-floor, that is fine but I want to install a new lay of I ¼ inch sub-floor before I lay new hardwood floors.

Has any one placed a thin layer of new sub flooring over existing Original Pine Plank Sub-floor? And if so how did it turn out?