A
Anthony Rigby
I've just had an extension built and I'm going to be installing wet UFH. The room will be an open plan kitchen / sitting room with a floor size of 35 square meters.
The UFH system is a polypipe system using trays to lay the pipes onto. We are looking a tiling on top of the UFH and though the doors into the existing house.
There is a concrete slab already laid (no insulation in as yet only DPM) leaving a total of 150mm to play with to floor level.
My current thinking was along the lines of:-
>Lay 75mm kingspan or similar insulation on top of slab
>Lay UFH trays
>Put pipes onto trays, 15mm pipes
>Lay 60mm screed
This will take me to the 150mm to get the floor levels.
Questions are as follows:-
What screed would you use, flow screed or sand and cement?
What kind of costs should I be budgeting for the screed?
What depth screed would you recommend? I'm guessing any space saved by less than 60mm screed could be made up with thicker insulation boards? I also guess it's better to have minimum screed depth to aid heat transfer?
Sorry for all the questions but I think getting the prep and spec right now will save me lots of time and hair in the future!
Cheers,
Ant
The UFH system is a polypipe system using trays to lay the pipes onto. We are looking a tiling on top of the UFH and though the doors into the existing house.
There is a concrete slab already laid (no insulation in as yet only DPM) leaving a total of 150mm to play with to floor level.
My current thinking was along the lines of:-
>Lay 75mm kingspan or similar insulation on top of slab
>Lay UFH trays
>Put pipes onto trays, 15mm pipes
>Lay 60mm screed
This will take me to the 150mm to get the floor levels.
Questions are as follows:-
What screed would you use, flow screed or sand and cement?
What kind of costs should I be budgeting for the screed?
What depth screed would you recommend? I'm guessing any space saved by less than 60mm screed could be made up with thicker insulation boards? I also guess it's better to have minimum screed depth to aid heat transfer?
Sorry for all the questions but I think getting the prep and spec right now will save me lots of time and hair in the future!
Cheers,
Ant