Am remodeling, and installing tile floor. Joists are 2x8 16 o.c., subfloor is 5/8 plywood perpendicular to joists, for underlayment should I use 3/8 plywood+1/2 in. backerboard or 5/8 ply+1/4 in. b-board? (also, should underlayment be laid same direction as subfloor? (with offset seams) thanks, Ray
-
What kind of tile?– Joe PhillipsAug 30, 2018 at 3:44
-
Porcelain, 6x36.– RayAug 31, 2018 at 4:01
-
First thing to check out is this: johnbridge.com/vbulletin/deflecto.pl– Joe PhillipsAug 31, 2018 at 4:08
-
Came up just short of specs for tile, wonder if blocking would work?– RayAug 31, 2018 at 14:18
-
1Good luck. Normally porcelain wouldn't be an issue but since yours is 36" long, definitely worth spending a bit more time ensuring it won't snap in half!– Joe PhillipsAug 31, 2018 at 14:28
|
Show 3 more comments
1 Answer
When I did this in my old house I had a 3/4" subfloor and used 1/4" backer board (with 1/4" notch thinset between the subfloor and backer). I don't think that direction matters given how many fasteners you'll use on that backer board. Don't neglect to tape the joints either.
That floor never moved after adding tile on top.
-
Ok thanks, sounds like its just getting the same base 2 different ways, and either way it should be adequate. Thanks for reply– RayAug 31, 2018 at 4:04