DIY Home Improvement Forum banner

Fiberock underlayment

1130 Views 3 Replies 4 Participants Last post by  Bret86844
Remodeling older kitchen, got the floor down to old tongue and groove wood. Plan on putting down 4x4 sheets of Fiberock then ceramic tile. To adhere Fiberock to wood floor, can I just screw it down or is it best to use an adhesive between old wood floor and Fiberock?
1 - 1 of 4 Posts
Uncle Wally,

Hold everything there will ha. An old kitchen with old tongue and groove wood means 4-6" wide planks to me, and if I'm right, you can not install your Fiberock direct to that, or any other CBU for that matter. You need to first install plywood or OSB.

If you'd like some advice to make sure you're heading down the right path, let's start with you telling us how the framing is built. Size of the joists, spacing, unsupported span. see if you can figure out the species and grade of the joists and tell us if they're in good condition.

Yes, underlayment grade comes in both 4x4 and 3x5 in ¼ & ⅜ thickness.

  • Like
Reactions: 1
1 - 1 of 4 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.