[moneymm22]

just put down new flooring throughout first floor a 6 months ago, now that i am doing the mud room, realizing should have put down tile.

I have down 3/4" 5" wide brazilian cherry, which is on top of 3/4" plywood subfloor.

i would love to end up back at the same height, but curious, if i didnt mind the step down, could i just tile over the brazilian cherry?

if i take up the brazilian cherry, and the tile is 3/8" thick, is 3/8" enough for a mud floor under the tile?

is there any heating mat options that are super thin that could work here? would some radiant heat on the floor

 

[stick\shift]

What's the size, spacing and unsupported span of the floor joists?

Normal is for a 1/4" layer of cement back board on top of whatever amount of plywood is required to make the floor stiff enough for the tile.

I would remove the hardwood and be prepared for a transition piece down from the tile to the wood in the next room.

 

[moneymm22]

What's the size, spacing and unsupported span of the floor joists?

Normal is for a 1/4" layer of cement back board on top of whatever amount of plywood is required to make the floor stiff enough for the tile.

I would remove the hardwood and be prepared for a transition piece down from the tile to the wood in the next room.

2x12" 16 OC i believe, i removed about 2.5" of mud along with 1/2 stone from the entire first floor, replaced with just 3/4" hardwood flooring.

so it should support whatever weight i put down.

would a 3/8 mud floor work along with 3/8" tile to get back to the exact height of the other floors?

 

[Nealtw]

Are you sure, we seldom see 3/4" subfloor, usually 5/8 when joists are @ 16"
If you do it with out backer board paint the subfloor with Redgard so the wood doesn't suck all the water out of the thin set.

 

[moneymm22]

Are you sure, we seldom see 3/4" subfloor, usually 5/8 when joists are @ 16"
If you do it with out backer board paint the subfloor with Redgard so the wood doesn't suck all the water out of the thin set.

yes im sure, i mean its 3/4" but i forget if its really 11/32 or actual 3/4,

thanks will do.

 

[Nealtw]

yes im sure, i mean its 3/4" but i forget if its really 11/32 or actual 3/4,

thanks will do.

 

[Brother Antioch]

just put down new flooring throughout first floor a 6 months ago, now that i am doing the mud room, realizing should have put down tile.

I have down 3/4" 5" wide brazilian cherry, which is on top of 3/4" plywood subfloor.

i would love to end up back at the same height, but curious, if i didnt mind the step down, could i just tile over the brazilian cherry?

if i take up the brazilian cherry, and the tile is 3/8" thick, is 3/8" enough for a mud floor under the tile?

is there any heating mat options that are super thin that could work here? would some radiant heat on the floor

Much though I despise using it, I'd recommend tearing it down to the original sub-floor, and using Ditra Heat for your heated floor. Put it in as prescribed, and do a skim coat over the cables using your grout float (NOT a trowel!!!) using a non-modified thinset. The next day, you can use a 1/2" x 1/2" notched trowel with a full modified thinset to install the tiles. Should come out at 3/4" finished height and a simple T transition will work perfectly.

Cheers,

BA.

Edit:

Don't forget to screw the subfloor down to the joists every 8 inches or so before applying the Ditra. Solid base...solid floor.

 

[moneymm22]

Much though I despise using it, I'd recommend tearing it down to the original sub-floor, and using Ditra Heat for your heated floor. Put it in as prescribed, and do a skim coat over the cables using your grout float (NOT a trowel!!!) using a non-modified thinset. The next day, you can use a 1/2" x 1/2" notched trowel with a full modified thinset to install the tiles. Should come out at 3/4" finished height and a simple T transition will work perfectly.

Cheers,

BA.

Edit:

Don't forget to screw the subfloor down to the joists every 8 inches or so before applying the Ditra. Solid base...solid floor.

this ditra goes right on the plywood subfloor?

 

[Brother Antioch]

this ditra goes right on the plywood subfloor?

Yes. You apply the Ditra right to the subfloor using a modified thinset and a 1/8" x 1/8" notch trowel. It's a good idea to have something somewhat heavy and flat to push the Ditra into the mortar bed. I usually just use a box of tiles, and sort of push it around like a roller.

Once you put the wires into the membrane, then screed it with non-modified thinset. The next day, you can tile directly on that "concrete" surface with a proper fully-modified thinset for maximum adhesion.

There's some good "how to" videos for installing Ditra Heat systems out there. Or here's a link to their site with the Installation Guide, so you can get an idea of what it's all about.

https://resources.schluter.com/media/DITRA-HEAT-InstallationGuide.pdf

If you have any questions, don't hesitate to ask. It's what I do for a living, and I'd be happy to give you any advice on it. Heading out shortly, but I'll check in when I get home later this evening.

Cheers,

BA.

Edit:

Just wanted to add, if you have the option, get the Ditra Heat membrane in 2x2 flat sheets instead of on a roll. It won't keep trying to curl up as you install it...much easier!