Unevenness
Tuesday, May 30th, 2006I’ve got a 30 year old 2nd floor condo with a cement floor. We’re planning to install walnut floors over 900 sq ft. When we took up the carpet, we discovered that in some areas the cement is uneven. We’ve got three quotes from installers, but each uses a very different method. One says to lay down a whole new cement sub-floor (for $4k), then nail plywood into the new sub-floor and the hardwood on top. One says to float 5/8″ plywood one way and 3/8″ plywood the other way, then nail the walnut in. And one says to simply use a self-levelling compound in the uneven areas, then screw-in 3/4″ plywood, then lay the hardwood.