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Hi all, iv been apart of the forum for a little while now but never posted until now. I’m Geoff and my company is GHL Bathrooms and tile we’ve been trading on and off (off when I was paye for a few years) for 15 ish years now around central Scotland. Thought I’d share this job to see if you thought my approach and execution was right or over the top .. here’s what we done. 600x400 sand stone on a chipboard floating floor
1) 10mm construction board fixed with addi “and washers”.
2) fitted ufh and screeded with self level.
3) bedded ontop tilemasters anti fracture mat.
4) tiles with tilemaster semi rapid
5) tilemaster grout
Question is do you think the anti fracture mat was also needed?

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Geoff Thacker
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Hi , JC. The floor was previously tiled “badly” directly onto the chipboard and to be honest the tiles lifted and left the floor clean (what would indicate lack of primer) but only two small areas the tiles were cracked so we put concrete anchors in that area so I’m more the confident to guarantee my work.. G
 
W

WetSaw

So what is "problematic" with the floor?

In answer to your question, yes to antifracture mat with stone over UFH ( not disregarding the floating floor which is another matter )
 
D

Dumbo

Hi , JC. The floor was previously tiled “badly” directly onto the chipboard and to be honest the tiles lifted and left the floor clean (what would indicate lack of primer) but only two small areas the tiles were cracked so we put concrete anchors in that area so I’m more the confident to guarantee my work.. G
As long as you're happy . But just saying
 
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Geoff Thacker
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So what is "problematic" with the floor?

In answer to your question, yes to antifracture mat with stone over UFH ( not disregarding the floating floor which is another matter )
Maybe problematic was the wrong title maybe “overthought” is better apologies
 
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Geoff Thacker
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What I should of asked is, I don’t know why the anti fracture mat was required is that not just doing the same job as the insulting board ... and I suppose in a way the job was problematic as it caused a slipped disc that pinched my sciatic nerve:(
 

macten

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I always spec anti frac over UFH with natural stone. Not sure if it's B.S yet but I heard ages ago it will be in their next update.
 
F

Flintstone

Floating floor is a no no for me, especially with stone! If this was not a floating floor, your best option would be to use an ufh system which uses an uncoupling membrane such as vario pro, ditra heat etc etc. Less labour, less materials, the way to go with stone over ufh.
 

Andy Allen

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All I can say is your very brave tile a floating floor with stone....... it's not something I would of done, but I hope it works out for you.
 
O

One Day

My issue with floating floors is not really lateral movement which can be dealt with as you have done here. But it's the fact that the boards are floating on polystyrene which over time can compress and leave voids under the boards. That's the big risk for me, although being brutally honest it will likely be years before it happens and you'll likely be forgotten about!
 
D

Dumbo

My issue with floating floors is not really lateral movement which can be dealt with as you have done here. But it's the fact that the boards are floating on polystyrene which over time can compress and leave voids under the boards. That's the big risk for me, although being brutally honest it will likely be years before it happens and you'll likely be forgotten about!
Ground workers must be better in your part of the country down here the over site isn't flat so as you walk over the floating floor it moves vertically because it rocks on the uneven oversite as the load changes .
 
O

One Day

Ground workers must be better in your part of the country down here the over site isn't flat so as you walk over the floating floor it moves vertically because it rocks on the uneven oversite as the load changes .
Absolutely! And those kind you simply walk away from...
 

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