I have an 1890's home with a 1x4 (finished) tongue and groove subfloor, laid horizontally (not on a diagonal).We are about to embark on replacing the mixture of cheap floors that are there now. We are laying an engineered tongue and groove hardwood and we have a premium 5mm rubber underlayment.Would anyone know if it is okay to simply solidify the original subfloor instead of replacing it with plywood? And what would be the correct method? Thank you! via /r/DIY http://ift.tt/2sjI5Md
