I
Ian
Can't see the pics mate.
Pictures not showing, what are the tiles made of? do you remember how the tiles were stored? possibility they could have been in wet/damp conditions and retained moisture? this may stop them bonding well to the addy?
J
J Sid
The tiles were ok for 2 years, yes ?
Sounds like a possibility of excess heat, seen something similar before after failure of flow temperature control in ufh, water temp went to 80 deg. Thermal shock. Customer started to deny it, a builder, but his sister let it slip one day.
Sounds like a possibility of excess heat, seen something similar before after failure of flow temperature control in ufh, water temp went to 80 deg. Thermal shock. Customer started to deny it, a builder, but his sister let it slip one day.
Problem here is you have wet ufh with chipboard and the plywood on top of that. Both products are insulators, so customer wants warm floor. But can't as the timber is basically lagging the ufh. So they turn up the manifod temperature to make the floor feel better and doing so, the floor gets hotter, to a point that the tiles de-bond from the ply.
You could blame th customer, but a timber floor on top of ufh is asking For trouble.
You could blame th customer, but a timber floor on top of ufh is asking For trouble.
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J
Just Rizzle
totally agree with above to much insulating products bound to fail . bet there heating bill is a small fortune
Tile seller
TF
Can't say I understand these floors either. Probably a more inert material than ply would have been better as a final layer beforr tiling. Could have gone straight down with hardie floor.
But he's saying that the addy is still stuck to the floor but tiles have come away clean? So that makes no sense?
J
Just Rizzle
mmm
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Tile seller
TF
As ply shrinks and expans a flexible adhesive may well have stayed stuck to the wood and in good condition however,the forces this transfered to the tile perhaps could have debonded what was a weaker attachment.
Ply expands and can handle it, adhesive goes with it and can handle it also, the tile doesn't expand which creates the stress.
Or, maybe my imagination has gone funny lol😕
Ply expands and can handle it, adhesive goes with it and can handle it also, the tile doesn't expand which creates the stress.
Or, maybe my imagination has gone funny lol😕
J
J Sid
You guy's not come across this ufh method before?
I would have uncouple on top of chipboard if floor solid, did a bathroom and a shower room yesterday, not plied, but have seen it done many times. HB would have insulated to much, no? If it was to fail I would have expected sooner the 2 years.
To me clearly a heat issue.
I would have uncouple on top of chipboard if floor solid, did a bathroom and a shower room yesterday, not plied, but have seen it done many times. HB would have insulated to much, no? If it was to fail I would have expected sooner the 2 years.
To me clearly a heat issue.
J
J Sid
Turn ufh up to max and leave for a day, measure the floor surface temperature. Have to check, but the max allowed is about 28 Deg over the whole floor with a max of 35 degrees over a max of 1m2 (wetroom floor as an example).
Need to find out what happened before you fix again....
I would use Ditra rather than HB
Need to find out what happened before you fix again....
I would use Ditra rather than HB
O
On one
Any sign of back skimming of the tiles?
W
WetSaw
Was the ply primed? Looks like the adhesive sucked into that before it stuck to the tiles.
F
Flintstone
I doubt it
There are similar tiling threads here
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