warm up under floor heating

[saundy]

hi need some advice. the tilers have said that they have to put a self leveller over the warm up underfloor heating and then the flexi adhesive over the self leveller is this correct or not cause on the box it says flexi adhesive straight over the wire. can any of you guys help with some advice.
:hurray:

 

[Gazzer]

Its actually the better method

 

[Bubblecraft]

SLC is not required but is a better method. It helps for 2 reasons.
1, to give a perfectly flat surface to tile to as the UFH can cause it to be an uneven surface. Especially if the UFH is not going wall to wall tight.
2, if SLC is not used, there is a chance the trowel can nick the cable when adhesive is being laid.
Depending on the UFH used, it could also work out cheaper as sometimes more adhesive is required to allow the height difference.
A cement based flexible adhesive is a must with UFH.

 

[Uheat - Keith]

Agree with Sir Ramic & Bubblecraft.

90% of our feed back is for the first method above.

Warm regards,

 

[AliGage]

and 3rdly if you ever need to replace a tile or the whole floor in the future you should be able to de-tile without damaging the UFH and without having to forkout again for the supply and installation of UFH.
In my opinion it is the best way to lay UFH. It provides a lot more guarantees than burying the cable in the adhesive. You can ensure complete coverage of the wire before fixing any covering.

I have just completed a honed slate floor with UFH in the same way. Link through the facebook part of my signature if you want to see progress and final pictures. If it helps.

 

[colli84uk]

Fine either way. Self level way is fine and stops any accidentley damage when applying adhesive but warm up offer a safetynet guarantee.