Which UFH Screed (Thin)

[Sheldon Overs]

All

Please could you advise which is the best thin screed to go with for UFH?
I know it will be a liquid of some sorts and I presume 40mm is minimum I can get away with? I will be tiling on top. Im trying to maximise the amount of insulation I can get underneath a Block and Beam floor with minimum increase in height.

(If any tilers around Warwickshire want a job and have done UFH type stuff before please feel free to make contact)

Thanks

Sheldon

 

[Flintstone]

You can get a thin overlay system from the likes of schluter and I think the underfloor heating store do one. I can’t recall the exact thickness but 30mm springs to mind, perhaps get in touch with them and see what they have to offer. Also our forum sponsor @Uheat - Jake might have a similar setup

 

[Uheat - Jake]

What's the overall floor height you have to play with from base to finished floor? This would determine the best most suitable system for yourself.

 

[Sheldon Overs]

80mm or 130mm. (house on 2 separate levels at min)
I would like a wet system with screed as I think it would be more efficient than a overlay system.

However with the 80mm Im at a push to get 30mm in there. However 30mm is better than nothing (and seeing as currently floor is just block and beam and screed, this would be better). Im digging up the screed and this 80mm is down to beam. (Maybe 5mm extra to play with door frames etc... as Im renovating whole house)

 

[Uheat - Jake]

80mm or 130mm. (house on 2 separate levels at min)
I would like a wet system with screed as I think it would be more efficient than a overlay system.

However with the 80mm Im at a push to get 30mm in there. However 30mm is better than nothing (and seeing as currently floor is just block and beam and screed, this would be better). Im digging up the screed and this is down to beam.

We've always been told a 50mm Liquid screed in the minimum you can go which would only leave 30mm for insualtion. However @Ajax123 maybe able to advise on another type of screed which can go at a lower thickness.

 

[Chalker]

Building regs is minimum 100mm insulation.

 

[Dumbo]

Building regs is minimum 100mm insulation.

I was thinking along those lines and i wondered if he doesn't have any on top of block a d beam at the moment if it is underneath . But while I am writing this I suddenly thought it may of been a floating floor that somebody has removed and screeded hence lack of room for insulation

 

[Ajax123]

All

Please could you advise which is the best thin screed to go with for UFH?
I know it will be a liquid of some sorts and I presume 40mm is minimum I can get away with? I will be tiling on top. Im trying to maximise the amount of insulation I can get underneath a Block and Beam floor with minimum increase in height.

(If any tilers around Warwickshire want a job and have done UFH type stuff before please feel free to make contact)

Thanks

Sheldon

GYPSOL HTC liquid screed. Minimum 20mm cover to the pipes so with 16mm pipe minimum 36mm. Ignore the buildings regs 100mm insulation... It's wrong.

 

[Ajax123]

Building regs is minimum 100mm insulation.

No it's not.

 

[Ttt1601]

Under floor heating store will custom there overlay system to any depth of xps board and it's a great system