Originally Posted by
Robert MacKinnon
Thanks for the reply Neil. The floor integrity is quite fine; it's not because of poor structural integrity that I am considering this subfloor strengthening. I might have been misleading in my post. The 2x8 joists are in great shape. The original installation is missing nails in some floorboards causing them to be loose. The floor "bounces" in these areas because there is nothing to hold the subfloor board to the joist. But moreover, the original floor used to squeak in these areas. I could screw down the loose boards to the joists but there is another overriding concern I have. The new installation will have half the floor with 3/4" T&G solid hardwood flooring and the other half will be 17x17 porcelain tile. I'm going to use Ditra on the tile floor but it was recommended to me by a couple of tile installers to strengthen the foor in the areas where the tile will be laid to prevent cracking of the tiles in future. Since I would consider adding this ply overlay primarily for the tile floor, it is a no-brainer to continue the ply overlay into the hardwood floor areas (1) to reduce the chance of floor squeaks and (2) to create a uniform subfloor surface throughout the project area.
My question was addressing my concern that I would be using a sufficiently strong ply product to achieve my goals. Is that explanation clearer?