Kitchen floor

[DavieA]

Had a look at kitchen floor today approx 22m2. chiboard floor thats had hatches etc cut into it and customer wants to simply put insulation boards down and tile.
My issue is that the floors chipboard, not 100% sound and has slight bounce so my recommendation was to ply floor to elimenate bounce and any sort of movement, then if he wants lay insulation boards staggered and screwed(never used backer or insulation boards before) followed by ufh, slc, laying tile, grout and if req sealing.

Is this correct and should a decoupler be used ontop of slc if tile is porcelain or natural stone?

also price im thinking around

7 bags addy=140
4/5 slc=100
grout=30
labour=660
= 930 not inc decoupler,tile boards

Any advice as always appreciated

 

[enduro]

If it is a floating floor then my advice would be...RUN!!

 

[Ian]

First job is to sort the floor, you must get rid of that bounce. Like Enduro said, if it's a floater, run for the hills!

 

[DavieA]

Yeah defo the bounce must go, and first question will be is it floating although if it has hatches cut in it can it still be floating and is there anyway i can tell?would ply and screwing to death be suitable?

 

[lcjohno]

You really need to find out if its a floating floor. I've never tiled one but there's a few on here who have and a few who will never. The bounce doesn't sound good, it has to be solid as a rock!

 

[Scott]

Lift the hatch and see whats underneath and what its laid on. Mind the bodies though!

 

[DavieA]

I always do.....So am I wrong in thinking if you can get under it its not a floating floor?

 

[Scott]

If you can see nder it then thats a start. If there are joist etc then its a 'proper' floor

 

[lcjohno]

My understanding of a floating floor is one thats laid on concrete with a really thick layer of some sort of insulation with chipboard ontop but i think you can also get floating floors on joists but i think there more for insulating reasons like sound proofing in a music studio. If you have movement in the floor or bounce i really wouldn't tile it untill it was solid.

 

[Daz]

"Is it a floating floor?" - Are there screws in the chipboard???

You cannot screw chipboard to Kingspan insulation so no screws = no joists = FLOATER!

Simples!

 

[lcjohno]

"Is it a floating floor?" - Are there screws in the chipboard???

You cannot screw chipboard to Kingspan insulation so no screws = no joists = FLOATER!

Simples!​

Would you tile it though? or have you tiled one? just intrested to see what other tilers do in this situation. Is there anyway DavieA can get rid of the bounce?
​

 

[Daz]

Yes I am one of the few that have tiled a floating floor, but I used judgement first, and walked away from some floaters.

Question: How do you eliminate bounce from a floor that has no foundation to secure to?
Answer: Walk away fast!

 

[DavieA]

I wouldnt tile a floating floor just due to my lack of experience to tell you the truth. My intention is if the chipboards on joists screw 15mm ply to remove bounce and then id like to lay 6mm backerboard of some sort over the ply and fix with spf addy and screw allowing me to build up under the backrboards if the floors high in areas allowing me to get a level surface to tile on without having to lift tile to adjust. lay ufh and slc over wires giving a smooth level surface to the put a sold bed and tile.

Is this sound guys?

 

[DavieA]

OR remove chipboard and lay thicker ply onto joists????

 

[Daz]

Yeah defo the bounce must go, and first question will be is it floating although if it has hatches cut in it can it still be floating and is there anyway i can tell?would ply and screwing to death be suitable?

Surely no further advice can be provided, until we know if it is floating or not??