How to install hardy backer board over tongue & groove.
by
Judy Kemp
+2
My sub floor is 1 1/2 " tongue and groove with a 'v' space between each board.
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The type of sub-floor doesn't change the way you install the backer board. The backer board has markings to show you where to run screws.
Hi Judy, Here's a link from Home Depot that should be helpful! http://community.homedepot.com/howto/DiscussionDetail/Backer-Board-directly-on-2x6-tongue-and-groove-subfloor-9065000000007r4
Good luck!
Depends on how much give there is in the floor. If you stand between two floor joists and you can see that there is give in the floor, lay a second sub-floor that is not tongue and groove. If you plan to tile, you want the floor as rigid as possible or you will have issue with the tile and/or the grout later
Glad I could help. Good luck with your project!