thinnest UFH insulation for tiles?

[laike]

hi, what is the absolute thinnest UFH insulation option to be used above a concrete floor with a porcelain tile top floor?

i don't really have enough room for a 6mm insulation board. i thought i could use a 2mm foam insulator but i just realised those have too much 'spring' and thus are unsuitable for use under tiles. (i'm not a tradesman)

thanks,

 

[laike]

would celotex 25mm board be suitable for use under tiles?

 

[DHTiling]

4mm is the thinnest board but IMHO the minimum should be 10mm for optimal benefit..

 

[laike]

which manufacturer makes the 4mm board? is it better than nothing?

 

[Andy Tiler]

which manufacturer makes the 4mm board? is it better than nothing?

Lee @ Tiletown sells them boards?
www.tiletown.co.uk

 

[DHTiling]

which manufacturer makes the 4mm board? is it better than nothing?

Wedi.

 

[cam_low]

marmox too

 

[Lee@emctiles]

Lee @ Tiletown sells them boards?
www.tiletown.co.uk

Thanks Andy, but PCS don't do a 4mm......so no, we don't sell a 4mm.....

That said, I would think the insulation value on a 4mm board (bearing in mind it has cement coating on either side of the board) would be little or no use.....just my opinion and will gladly say I'm wrong.....

 

[Andy Tiler]

4mm is the thinnest board but IMHO the minimum should be 10mm for optimal benefit..

As Dave 4mm would be a waste...!
10mm minimum for me to!.

 

[DHTiling]

Thanks Andy, but PCS don't do a 4mm......so no, we don't sell a 4mm.....

That said, I would think the insulation value on a 4mm board (bearing in mind it has cement coating on either side of the board) would be little or no use.....just my opinion and will gladly say I'm wrong.....

You are spot on .. 4mm is a waste... it is more for wall cladding IMHO.

 

[Rookery]

As an alternative to the usual cable systems, you could consider a 'foil' type under floor heating such as Enerfoil Magnum. This would give you a little more height to play with and so perhaps allow you to put down 6mm or even 10mm insulation.