Wooden floor over heating pipe

If it hasn't damaged the existing floor....... TBH I'd just use the slip on pipe insulation (the stuff that is tubular with a split along it). That ought to cut down most of the heat loss.

Malc

Thanks for the advice.

The floor is not yet in place and the old pipes have been removed. They were buried directly in the slab!

I have tried the 9mm wall thickness Armaflex tubular insulation and this gave a surface temp of 45 deg C. The 19mm wall thickness gave a surface temp of 29 deg C. Temperature was measured with two thermocouples, one at the pipe surface (under the armaflex) and the other at the surface of the armaflex measured by placing the thermocouple under another thin piece of armaflex. This may have given an exagerated value.

The thicker insulation clearly gives a lower surface temperature but it means cutting a 60mm deep chase across the slab. I have no idae how deep the slab is and how far down the damp membrane is so I am trying to minimise the chase depth but without risking damaging teh new floor.

Brian