ditra matting - TilersForums.com

[proview1122]

Hi first post here (but lots of info from the forums thanks)

Just had a tiler round to price tilling kitchen and hall approx 65m2 he suggested ditra bat but very expensive looked at dura but similar price

600x600 11mm porc anhydrite screed (spelling?)
is there a cheaper version of the mat
CHEERS

 

[Qwerty]

There are cheaper alternatives, but I always use Ditra.

Did the tiler actually explain his reasoning behind fitting Ditra?


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[Ajax123]

No reason for uncoupling porcs on anhydrite unless there is an issue with the screed. Use gypsum based adhesive instead.

 

[proview1122]

There are cheaper alternatives, but I always use Ditra.

Did the tiler actually explain his reasoning behind fitting Ditra?


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as its a new extension there may be some settlement / movement also it has wet underfloor heating
cheers

 

[Ajax123]

as its a new extension there may be some settlement / movement also it has wet underfloor heating
cheers

New build... Settlement...... Hope not. Ditra won't help if there is........ I think you are either being spun a line by someone who wants to sound like they know what they are talking about or you are dealing with someone who is genuine but not clued up on screeds and building. No offence intended.

There is absolutely no discernible reason why ditra is necessary unless the screed is unsound or is too wet. The fact that it has underfloor heating is irrelevant and the excuse that their might be settlement is downright scary. If it were natural stone like travertine then yes but porcelain is far to hard to need it. As I said use a gypsum adhesive which will match any movement to the screed ( they Re made of the same stuff) thus no differential expansion and contraction. Both are very low with gypsum anyway.

 

[DHTiling]

Some tilers DO like to uncouple heated screeds, be them Anhydrite screeds or Cement based screeds.. it might be over kill to some but taking the stress out of the tiling field is always a good thing IMHO.

 

[Qwerty]

Personally, I wouldn't uncouple porc here

 

[proview1122]

many thanks for info, I think I will save some money then.

on a different note bradstone are doing a special offer on sandstone 22mm thick looks nice for a rustic cottage floor:smilewinkgrin: if I lay this on same screed do I use same adhesive and grout

 

[Ajax123]

If you go natural stone it changes all the rules...... Soft sandstone or limestone I would uncouple. I would stick the membrane down with the same adhesive but ou can use whatever you like on top.