Travertine With Ufh

[Greg K]

Hi All,

I have 15 m2 of travertine on concrete floor. Part of that will be with electric UFH.

I want to put insulation for whole area, then wire, then tiling, grouting and sealant. White flexible adhesive.

Do I need anything else?

Thanks for any advice.

 

[Dave]

Hi Greg , 10mm minimum insulation is a must imho mate...

And i prefer to enscapulate ufh wires in slc before tiling..

 

[Qwerty]

As @Dave says, plus a decoupling membrane

 

[Dave]

As @Dave says, plus a decoupling membrane

Would you uncouple when using insulation boards Geoff ? .. Just curious..

 

[Qwerty]

Would you uncouple when using insulation boards Geoff ? .. Just curious..

Personally I do yes. I know many fixers and manufacturers (including Marmox) are content with the insulation boards providing the decoupling and it does without doubt serve this purpose perfectly, but for the belt & braces approach I always do.

 

[Greg K]

Thanks,

I know about insulation and slc, but can you tell more why decoupling membrane.

 

[Qwerty]

Thanks,

I know about insulation and slc, but can you tell more why decoupling membrane.

Read this..... Decoupling | Decoupling Systems

 

[Dave]

Thanks,

I know about insulation and slc, but can you tell more why decoupling membrane.

Some stones are prone to cracking through thermal expansion , depends on quality and fissures within stone.

 

[Dave]

As @Dave says, plus a decoupling membrane

Yep , i like to overkill as well with softer stones On larger areas but i have stuck direct to slc on small floors..

 

[Greg K]

This UFH will be 6m2. Decoupling should be on top of that only or for whole area?

 

[J Sid]

What wattage kit are you fitting?
Is it for feet warming only 100W or 150W wire are you trying to put some heat into the room with a 200W wire?
If the first then no uncoupling membrane is needed imho. 200W then possibly you could but I wouldn't.

 

[Dave]

This UFH will be 6m2. Decoupling should be on top of that only or for whole area?

If your going to uncouple , then yes the whole area ...

How big is the area ?

 

[J Sid]

15m2 @Dave.

 

[Dave]

What wattage kit are you fitting?
Is it for feet warming only 100W or 150W wire are you trying to put some heat into the room with a 200W wire?
If the first then no uncoupling membrane is needed imho. 200W then possibly you could but I wouldn't.

Good thinking , 200w .. It might well be a conservatory or similar

 

[Dave]

15m2 @Dave.

Read and remember all first post Dave lol lol lol...

 

[Greg K]

This is living room. Wire around 100W to feet warming mostly in the middle (furniture around).
I hope I can go without uncoupling membrane in that case.

 

[Dave]

This is living room. Wire around 100W to feet warming mostly in the middle (furniture around).
I hope I can go without uncoupling membrane in that case.

Imho it will be fine without...

 

[Greg K]

Dave,

You said 10 mm insulattion. Is 6 mm not enough (flat on second floor)?

 

[Dave]

Dave,

You said 10 mm insulattion. Is 6 mm not enough (flat on second floor)?

Imho greg , 10mm gives the best return U-value but if you want 6mm then thats ok , just the heat loss will be more ..

 

[Greg K]

Ok, I understand.

Thank you to all of you.

 

[J Sid]

Imho it will be fine without...

Ditto