The old pine floors in my bedrooms were deeply gouged and I was told could not be salvaged/refinished. After living with carpet for a while I want to return to hardwood, and I have chosen to go with prefinished. One person told me I could put new prefinished (Bruce) flooring right over the old floor, guessing that in my old house (1920s) there is no subfloor (?). Another person told me that I should not do this, and that the whole floor should come up first. Who's right? I should say, if necessary, I can probably find out if there is a subfloor once I get the carpet up because the nice person who gouged the wood also cut big holes in it to run ductwork so I can look around these patched-in spots.