Help! Raising a bathroom floor after Decoupling Membrane

Hi Everyone, looking for some advice before i start tile work on my bathroom renovation. I made the mistake of waterproofing the bathroom first, then leveling and installing all of the hardwood flooring. What I found out was that the bathroom was sloping almost 1.2-2in down, from the rest of the home, and when i leveled out the kitchen, i realized i would need to raise the bathroom before tiling. I am not exactly sure how best to raise the bathroom floor, as i would normally level everything with plywood and some self leveler, then install the decoupling membrane... but here we are. The way i see it, i have a few options, none of which i know to be good or better than the others Mud Pack over the ditra heat membrane, leaning towards this idea Use Kerdiboard, or go board with allset and build up layers to increase the floor heigh but i think this would interfere with the radiant ditra floor heating coils effectiveness Use Schluter All set and build up layers. saw someone on youtube doing this to build up layers, just not sure i can do this for a full inch If anyone here has experience or suggestions please let me know! I would love to get a plan together and get back to work on this bathroom. submitted by /u/talkwithphil [link] [comments]

Apr 28, 2025 - 06:49

Hi Everyone, looking for some advice before i start tile work on my bathroom renovation.

I made the mistake of waterproofing the bathroom first, then leveling and installing all of the hardwood flooring. What I found out was that the bathroom was sloping almost 1.2-2in down, from the rest of the home, and when i leveled out the kitchen, i realized i would need to raise the bathroom before tiling. I am not exactly sure how best to raise the bathroom floor, as i would normally level everything with plywood and some self leveler, then install the decoupling membrane... but here we are.

The way i see it, i have a few options, none of which i know to be good or better than the others

Mud Pack over the ditra heat membrane, leaning towards this idea
Use Kerdiboard, or go board with allset and build up layers to increase the floor heigh but i think this would interfere with the radiant ditra floor heating coils effectiveness
Use Schluter All set and build up layers. saw someone on youtube doing this to build up layers, just not sure i can do this for a full inch

If anyone here has experience or suggestions please let me know! I would love to get a plan together and get back to work on this bathroom.

submitted by /u/talkwithphil
[link] [comments]