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yavo

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Hi forum, 1st post so here goes! I'm a general builder who will be having my own lounge floor tiled shortly. I won't be doing it myself but will be prepping everything beforehand. The area is 25 sq.m & I will be using 600 x 600 porcelain tiles. I intend to install 10sq.m of u\floor wire heating in the centre of the room, on top of 15mm plywood.
My question is - what type of plywood sheets should I use?
 
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Tony_C

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Hi Yavo,

None, Use a tile backerboard/insulation board instead, a far superior product to be tiling to.

You will also need to latex over the UFH cables to protect them and create a level surface over the whole area for tiling or use a cable carrying system like Ditraheat, DCM pro but you will be required to mat the full area. Talk it over with the tiler you will be using, he will have preferred methods and possibly wish to carry out his own prep work.
 

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Agree with comments above, and we would be delighted to sell you underfloor heating and insulation board;
 

3_fall

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My first question would be, what are you applying the plywood to and why?
what is your main substrate?
does it suffer from deflection?
is it a suspended floor?

But as has been said, plywood is a poor choice of substrate I’m afraid.
It is too susceptible to atmospheric temperature I’m afraid, plus introduce any kind of moisture and it could be a disaster.
unfortunately plywood of today is not the same as 20yrs ago.
it warps all to easily and in some instances delaminates because of the poor resins used now.
Mainly because it’s an inferior product from the Far East
 

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