Tiling On New Floating Floor

[Walshy]

Hi I have had my cellar converted and a new concrete sub floor put in on which kingspan and water resistant chip board has been layed on top of. I have always thought tiling straight onto chipboard was a no-no so my question is what is the best thing to do prior to installing floor tiles? I thought maybe installing Ditra matting but im not sure.
Any help appreciated.

 

[Rich Midge]

I'd be more inclined to go with backer board, glued and screwed. Firms the floor up rather than trying to accommodate movement. If budget allows you could always lay a membrane over the boards.

 

[Walshy]

I'd be more inclined to go with backer board, glued and screwed. Firms the floor up rather than trying to accommodate movement. If budget allows you could always lay a membrane over the boards.

Hi Rich, thanks for the reply, what would be the minimum depth of board you'd use? there is an issue with floor height I need to overcome also.

 

[Rich Midge]

6mm Hardie should be done it or No More Ply. TileMaster's membrane is around 2mm if you want to incorporate that in the prep as well. Norcros permalayer is 1.8mm but I'd personally look at TileMaster if available where you are. Also Bal and Mapei do a thin decoupler but in all honesty I use neither so can't really comment on how well they work.

 

[Walshy]

6mm Hardie should be done it or No More Ply. TileMaster's membrane is around 2mm if you want to incorporate that in the prep as well. Norcros permalayer is 1.8mm but I'd personally look at TileMaster if available where you are. Also Bal and Mapei do a thin decoupler but in all honesty I use neither so can't really comment on how well they work.

ok mate think I might just get away with 6mm, that's great thanks again for your help, much appreciated

 

[radim]

Floatin floor cant be tiled.

 

[Spud]

How thick is the king span

 

[goz]

This is a floating floor, think very carefully before considering tiling this floor. I regularly walk away from floating floors, not worth the risk .

 

[Stef]

If your sure your going to tile then at least use an S2 adhesive to give yourself a chance of the floor not failing.
I was going to tile a floating floor a few months ago but there was very little deflection in the floor but the job never got done as they couldn't afford to tile it at the end up.

 

[Spare Tool]

If your sure your going to tile then at least use an S2 adhesive to give yourself a chance of the floor not failing.
I was going to tile a floating floor a few months ago but there was very little deflection in the floor but the job never got done as they couldn't afford to tile it at the end up.

Same here, customer had even bought 70sqm of tiles, went to look at job and discovered it was floating...by the time I'd told him all the prep that was going to be needed to accommodate his new kitchen with granite worktops he knocked it on the head and went for karndean...did thank me for being honest with him and not just tiling it

 

[Stef]

Same here, customer had even bought 70sqm of tiles, went to look at job and discovered it was floating...by the time I'd told him all the prep that was going to be needed to accommodate his new kitchen with granite worktops he knocked it on the head and went for karndean...did thank me for being honest with him and not just tiling it

The mark of a true professional m8..

 

[Andy Allen]

Not a fan of tiling floating floors..

 

[J Sid]

rip the lot out and screed it or what I do now is SLC to block and beam then glue 50mm, or what ever is needed of insulation board suitable for tiling and away you go.
electric or reto wet ufh can be fitted at the same time
both were floating, far room reto fit wet ufh

 

[Walshy]

rip the lot out and screed it or what I do now is SLC to block and beam then glue 50mm, or what ever is needed of insulation board suitable for tiling and away you go.
electric or reto wet ufh can be fitted at the same time
both were floating, far room reto fit wet ufh
View attachment 81784

ok sounds as trhough tiles are going to cause a lot of issues, may have to re-think... thanks to everyone for the advice. much appreciated

 

[Russel]

I am not speeking from experience as I have never tiled a floating floor but in my mind the prep would need to be a single solid piece that wont deflect. Something like 2 layers of 12mm ply all glued and screwded with staggering joints. Or even better how about 3 layers? The only other way would be to lay a super solid thin flexible concrete based screed that will also add mass and take up some of the bounce. Come on chaps we need to beat this floating floor problem!