Hi I have 150m2 GF of UFH to install and I' d like to install it in the slab (125mm ) (100 mm PIR below) I have seen pipes cable tied to mesh on commercial jobs and wondered if there were any pit falls. The UFH company are after crazy money to install. We have done it ourselves before but in flow screed and not to mesh. Any advice welcome. A
There was no problem at all with heavy muddy boots tramping over the steel fabric and insulation whilst laying the pipes. The fabric was stood on 50mm chairs, the pipes were clipped to it with cable ties, and the insulation underneath is 300mm deep EPS. The slab is 100mm deep, so the pipes are just above the centre of the slab, which in practice works very well indeed. We still get around 8% heat loss from the UFH to the ground through the 300mm insulation, but that's pretty typical for UFH;