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Posted By: jamesingramI often lay a light weight mess and cable tie pipe to this , it bring the pipe up a touch higher in the screed, completely surrounding the pipe , which is apparently better.
Posted By: crusoeEd: Coupla points: Not all builds are 'new' as in the PP is years old and the U-values at the time were great if they were anything below 1!!!
Posted By: crusoe2nd point: UFH a waste in low-insulation dwellings? Come off it.
Posted By: borpinI'm doing blinding, DPM, 150mm PIR insulation (plus edge ins)
Posted By: TimSmallPosted By: borpinI'm doing blinding, DPM, 150mm PIR insulation (plus edge ins) PIR is a little bit iffy under floor isn't it? Needs to be fully wrapped in a carefully joined, heavy duty DPM, otherwise may become waterlogged at the bottom edge in the very long term (and even then, still might in very long term)?
Posted By: jamesingramBorpin , reinforcing fabric mesh A98 or A142My prefered build up , HC, blinding, DPM, 200mm EPS,DPM,100-150mm concrete slab with UFH pipes tied to top of A98 mesh lifted up off EPS/DPM 25-50mm ish on mesh feet, trowel to finish, level tex if I'm a bit off on my finish.
Posted By: jamesingramyes , light weight as in not structual slab mesh, only 5-6mm bars ,200mm spacing works well
Posted By: borpin[PIR under floor] DPM needs to be well done as you say - not sure I'd use the term iffy but I'll let you know in 20 years how it has worked.....
Posted By: TimSmallWhat's not to like?
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