Building partitions on the slab

[davejura]

Not sure if this is the right forum for this, but here goes! 

We are stick building our timber frame. The ground floor is beam and block with probably 100mm insulation and 90mm screed with UF heating. My builder wants to put up all the partitions first (only 1 is load bearing) before the insulation and screed goes down due to perceived risk of hitting a UF pipe. I would imagine this would lead to thermal loss as well as using extra timber. I can understand the load bearing wall having to be done this way (or does it?). Just looking for advice please. He isn't being hard and fast about it by the way.

[SimonD]

How does your builder propose to deal with the thermal bridging at those partition walls? I would want everything inside the thermal envelope, especially with ufh.

[JohnMo]

Not sure why you should hit UFH pipes as the pipe should a couple of hundred mm from wall edge.

 

Would lead to a substantial thermal bridges.

 

Our structural walls were thermally broken, with aircrete blocks and 65mm thick concrete bricks on top.

[Russell griffiths]

Just the structural wall through to the beam and block, the rest on top of the screed no screws needed, pu glue the sole plates down, you will not move them. 

[davejura]

Was concerned about thermal bridging. How do we deal with that Russell with the structural wall? Thanks.

 

[Russell griffiths]

Row of concrete blocks on flat, row of marmx blocks then timber sole plate, all held in position by insulation and screed. 

What are you doing with your external walls to minimise thermal bridge. Do the same. 

[Conor]

We built all our internal walls off a course of aerated blocks. Stud and block walls.

[nod]

He’s core t in doing this 

He probably wants to avoid the UFH pipes