Tekwarm? Used it?

[BotusBuild]

Has anyone used this for their UFH?

https://theufhgroup.co.uk/products/tekwarm-lite-lp-ufh-board-1200mm-x-600mm

 

We have 18mm T&G board down on upper floor already, with about 50-60mm space left for floor buildup inc UFH. This, or something similar  is our way forward. Anyone used anything similar that they would recommend?

[Andehh]

I imagine you'd lay this, then 9mm board or something over the top and carpet? If upstairs it'd probably work, but if you can get an extra 10 or 20mm you'd benefit. You will also need to run warmer temps to feel the benefit.

[SteamyTea]

What is the thermal conductivity?

I can't find it.

[BotusBuild]

On 11/11/2024 at 05:56, SteamyTea said:

can't find it

Hmm, neither can I.  Have asked the question

[BotusBuild]

On 10/11/2024 at 21:28, Andehh said:

upstairs

is our living space (upside down well insulated house)

On 10/11/2024 at 21:28, Andehh said:

an extra 10 or 20mm

would be possible.

[BotusBuild]

@SteamyTea

The answer I got-

 

 the thermal conductivity value is 0.034W/mk. The boards are an XPS insulation with cement coating on two sides of the boards.

[SteamyTea]

23 minutes ago, BotusBuild said:

thermal conductivity value is 0.034W/mk

I would think that the point where the pipes are is very thin. Hottest point as well.

[BotusBuild]

Yes, I think it needs to sit on some other insulation as stated above, and maybe a thin hardboard layer before final floor on top

[SteamyTea]

Just now, BotusBuild said:

Yes, I think it needs to sit on some other insulation as stated above

About 150-200mm of PIR.

[BotusBuild]

That's not going to work for us.

We only have about 65mm to play with.

We have 100mm R45 acoustic insulation between joists with 18mm ply t&g on top of the joists in situ already. This is upper floor living areas

Edited November 13, 2024 by BotusBuild