dhw&cold pipes below UFH insulation & screed

[aga memnon]

Hi new to forum, can any one see a problem running 15mm polyfit
Dhw &cold pipes in conduit (with>50mm separation gap)in chase in slab, then covered with 75mm insulation and ufh pipes and screed on top. Thinking is put in chase to keep cold water pipes from warming from ufh pipes. Would be easier to put in 2 metre chase than run up walls and snake about 20 metres. (to involved to explain layout that requires this). Many thanks for any replies in advance.

 

[ShaunCorbs]

if its insulated and doesnt touch the screed/ concrete your fine

 

[aga memnon]

Many thanks for the quick reply, yes will wrap pipe in pipe in climaflex.

 

[ShaunCorbs]

or if you can pipe and insulation inside a pipe like below but add insulation