Pipe underfloor heating

[demi34]

What adhesive do you guys use on underfloor heating the floor is liquid concrete.

 

[White Room]

Abit more info may help, what type of liquid concrete, piped or electric ufh etc

 

[Ajax123]

When you say liquid concrete do you mean screed or is it concrete. If screed is it Portland cement based or gypsum based?

 

[demi34]

Gypsum mate

 

[demi34]

Pipe underfloor heating

 

[DHTiling]

Hi..

How long has it been poured and has the heating been commissioned and have you done a RH reading.?

 

[Ajax123]

Then I would Recomend one of the following

GBTA from creative impressions
Gypfix from n and c nnicobond
Tile To Gypsum from norcross
CSA from Granfix

all of which are gypsum based so fully compatible with the screed

another alternative would be H40Ideal Eco from Kerakoll

make sure you follow the procedures for prep nd make sure the heating is propery comissioned and run first.

 

[bugs183]

Good job you said Demi about it being gypsum!!
Follows Ajax's advice above adhesive wise, some guys here also like to fix a decoupling membrane down to the screed with one of these adhesives, and then tile with cement based adhesive over this. This is personally the way i advise my customers to go. especially if you are using stone tiles, you really do need to use an uncoupling membrane

 

[Ajax123]

If you tile with natural stone use uncoupling in all cases with underfloor heating. If not stone then it is a matter of choice.

 

[The D]

Then I would Recomend one of the following

GBTA from creative impressions
Gypfix from n and c nnicobond
Tile To Gypsum from norcross
CSA from Granfix

all of which are gypsum based so fully compatible with the screed

another alternative would be H40Ideal Eco from Kerakoll

make sure you follow the procedures for prep nd make sure the heating is propery comissioned and run first.

are all the adhesives you have Recommended suitable for all tile types ??

 

[Ajax123]

As far as I am aware deano yes they are. The only limitations are that the gypsum adhesives shold not be used in areas where it will remain permanently or intermittently wet e.g. Outdoors, Showers, wet rooms and swimming pools but anhydrite screed should not be used in these areas either. If it has been extra measures will be needed.

 

[bugs183]

I'm using GBTA at the moment. Kinda weird to use, really hard to find a nice mix, it slides around quite alot so you need to put battens against each course, and boy it's expensive, but it goes off and appears to work very well.