Make life easy, search the forum.

Discuss Tilling over different floors (membrane/cement boards) + other questions... in the Tiling Advice | Tile Forum area at TilersForums. USA and UK Tiling Forum

Reaction score
1
Please checkout the following advertisement.
I need to tile over a concrete floor on ground level (Utility & WC) and a first-floor timber floorboard floor (bathroom). I've bought some 144mm x 895mm wood effect tiles for all three rooms. I also have some Schluter DITRA 25 Uncoupling Membrane which I'm planning to fit directly on the concrete floor.

Do I need to put cement boards on the bathroom floorboards before the uncoupling membrane or can I put the membrane down without the cement boards?


Also, with the size of the tiles do I need tile levellers? I saw a guy fitting the a similar tile on youtube and he didn't use them. All the other times I've seen them used is with larger tiles.
 

Paulg83

TF
Reaction score
18
Cement boards will be fine without the ditra on your bathroom floor.

Ditra is fine on your concrete floor

If you are a newbie to tile then I would use clips, plank tiles can be bowed so you're probably best.
Read the instructions on the box as it might state not to lay them in a half bond. Use slow set flexible https://www.tilersforums.com/forums/tile-adhesive/ and minimum 10mm trowel
 
Reaction score
2
I very much doubt you could tile over 3 different areas with 2 different subfloors and expect it to be level or even good enough to take a large format tile
personally, I would https://www.tilersforums.com/forums/tile-adhesive/ down 6 mm Jackoboard backed up with screws and washers and continue over a few inches onto the concrete to minimize any deflection in the 2 subfloors
then I would latex over the whole area to self-level and make good any height variations also don't forget to prime all floors prior to fixing
as far as staggering the joints I would only go a quarter or a third down the length of the tile
without seeing the job or pics then that's the best I can offer
 
OP
A
Reaction score
1
I very much doubt you could tile over 3 different areas with 2 different subfloors and expect it to be level or even good enough to take a large format tile
personally, I would https://www.tilersforums.com/forums/tile-adhesive/ down 6 mm Jackoboard backed up with screws and washers and continue over a few inches onto the concrete to minimize any deflection in the 2 subfloors
then I would latex over the whole area to self-level and make good any height variations also don't forget to prime all floors prior to fixing
as far as staggering the joints I would only go a quarter or a third down the length of the tile
without seeing the job or pics then that's the best I can offer

Thanks for the advice. The 2 different subfloors are in 3 independent rooms, so there's no worry.

This is the latest advice I've been given.

Utility room & WC - Concrete floor: self-leveling bond, self-leveler, flexible https://www.tilersforums.com/forums/tile-adhesive/ (6mm towel?), Ditra 25, flexible https://www.tilersforums.com/forums/tile-adhesive/, tile (fixed with levelers & 10mm trowel).

Upstairs bathroom - Floorboards: screw floorboards down, 6mm No More Ply - glued & screwed, NMP primer, flexible https://www.tilersforums.com/forums/tile-adhesive/, tile (fixed with levelers & 10mm trowel)

Does this sound about right?
 

Reply to Tilling over different floors (membrane/cement boards) + other questions... in the Tiling Advice | Tile Forum area at TilersForums.com

Or checkout our tile training advice or the Tile Standards

This website is hosted and managed by www.untoldmedia.co.uk. Creating content since 2001.
Please visit our sponsor websites, they keep the forum free to use!

New Tiling Questions

UK Tiling Forum Stats

Threads
66,600
Messages
866,701
Members
9,510
Latest member
BIG_AL
Top
AdBlock Detected

We get it, advertisements are annoying!

Sure, ad-blocking software does a great job at blocking ads, but it also blocks useful features of our website. For the best site experience please disable your AdBlocker.

I've Disabled AdBlock