/diy/ - Do It Yourself

>>1408230
Floor tile wants about an inch of flooring under it. You've probably got 5/8, maaaaaaaaaybe half-inch under there on the subfloor now.

Lay the cement board parallel with the floor joists under the subflooring. (Subfloor should be 90° off the joists, so the strength axis is perpendicular). Mortar the cement board underlayment to the subfloor, tape/mortar the cement board joints.
Since you're doing this in a bathroom, you might want to consider redguard sealant or similar on the subfloor. Not critical if you do cement board underlayment and do it right.

>>1200472
if it wouldn't completely kill the resale value of this place, I'd have a washdown-friendly bathroom. Pressure washer wand permanently affixed to the wall.

As functional as it would be, I think a lot of potential buyers would walk in and see the cattle-processing-esque bathroom, do a 360° and walk out the door.

>>1200569
Greenboard's moisture-resistant, surround would go on top of that. OSB is for flooring, not walls.
Regardess of whether you're using greenboard or cement board (fuck, even OSB for that matter) there needs to be something waterproof on top of that. Tile, plastic surround, whatever. The backerboard should never directly see water.

>>1200658
The cement board's got tile on it. As long as the grout's sealed, the cement board shouldn't see any moisture. (Even if the grout isn't maintained, it'll take a fuckload of water to penetrate the grout and saturate the backerboard).

>>1200660
The problem with tile on greenboard is the paper will peel off, and all the tile comes with it. Cement board doesn't have this problem, as it's designed for tile applications.

>>1200777
>check'd
Couple hookers.

Pic related, kitchen flooring glued/screwed tonight. I need a lot more mortar.