Large Kitchen with Electric UFH - 2 Quotes - Advice Please?

[The D]

Both have their uses. I think the mat version has more issues for some as the matting itself tends to float if not installed correctly. The mats can be a pain in smaller areas.
Wires take a little longer but are more versatile but not really recommended for large areas.....again its down to what the installer prefers

so if the mat floats its not istalied correctly?? can you tell me how to insall it correctly so the mat will not float.

 

[Gazzer]

so if the mat floats its not istalied correctly?? can you tell me how to insall it correctly so the mat will not float.

Everyone has their own method. Mine is to use a 4mm trowel with rapid set SPF adhesive. Spread the area where the mat is being laid, push mat into that adhesive. After addy has set then using slc is easy.
Obviously sometimes the mat will stick to the floor with its own sticky back glue, if this is the case then fine but I find that when you pour SLC on it breaks that bond.
I dont like seeing people tape the mats down, a lot of the time it seems to be far too much gaffa tape....and then all the adhesive or SLC is sticky to is that tape.

 

[Old Mod]

I dont like seeing people tape the mats down, a lot of the time it seems to be far too much gaffa tape....and then all the adhesive or SLC is sticky to is that tape.

Hurray that man!!
I tried explaining that to a spark only other month (gently of course!) when he literally covered half the floor with 50mm gaffs tape! To hold down single wire system. He maintained that they did t provide enough tape with kit! He said "they put in enough for one quarter of the cable!" In actual fact what he'd done, as u've probably already worked out, is completely covered cable with the tape instead of laying it perpendicular to it! :6: He wasn't really interested in what I had to say, (yeah I know, strange eh! Haha) because he'd been fitting UFH for 10yrs and knew what he was talking about! Fortunately for me it wasn't the floor I had to tile!

 

[Gazzer]

My dad, (RIP) used to say that its one thing being clever but he would rather have common sense. I prefer to use common sense and unless someone can prove that the tape method is the best way then I will carry on my way.
Actually at Mapei HQ they had a UFH company demonstrate their system and when I questioned why they had used so much tape, they didnt seem bothered !

 

[Old Mod]

My dad, (RIP) used to say that its one thing being clever but he would rather have common sense. I prefer to use common sense and unless someone can prove that the tape method is the best way then I will carry on my way.
Actually at Mapei HQ they had a UFH company demonstrate their system and when I questioned why they had used so much tape, they didnt seem bothered !

just out for sales eh!

 

[Mr Tiler]

What about cables neale do you tape those down to the substrate before slc?

 

[Gazzer]

What about cables neale do you tape those down to the substrate before slc?

I use tape or glue gun. If tape I use as little as possible.

 

[Lee@emctiles]

Like i say, a decent mat will stick to your chosen subfloor, backer board ect ect and wont dovetail, its why we got it designed like that.

i went on a weber training course a few years back, took several fixers who were using an UFH matt that we sold at the time, it had a fabric backing to soak which was meant to work better with the adhesive, never thought we had a problem until i put it down then started floorflexing all over it.......it just dovetailed everywhere......
so when i got back i simple asked if it was possible to produce a matt that was so sticky it would stick to most subfloors, when it came i showed it our warehouse floor, dusty, not ideal......but it stuck.

 

[widler]

Unless the floors really really bad, id spread addy, insulation boards, matt, SLC then tile.
I find it saves time, if it was floorboards, solid but uneven would you SLC over the boards then addy then thermal boards or would you spread addy lay boards and screw down ?
The floor would have to be like the sea on a windy day for me to SLC over it ,even then you could get it flat with just addy and boards, seems a waste of a day to me

 

[AliGage]

Ive neverfound an SLC that will bond to gaffa/duct tape. Another reason I use loosewire (especially Warmups) is the doublesided tape and scrim tape is a brilliant method.

One thing I have to mention 3_fall is some older and current loose wire systems used to fixed with a conductive tape along the whole wire. Some of the older warmup ones used to installed this way.
Still don't think SLC or addy bonded to it though!