UFH - 100mm insulation straight onto compacted hardcore

[benjiman]

Hi all,

Normally it's recommended to have a compacted hardcore base, then 100mm concrete slab followed by the 100mm of insulation before screeding over UFH pipes.

Just wondering if MOT type 1 hardcore is used, if the hardcore can be compacted to the required depth and then insulation on top of this?

So basically skip the wet concreting to build a slab. There is already an existing concrete floor which required raising.

Cheers.

 

[tomfe]

You can do hardcore, DPM, insulation, slip sheet if pir, ufh pipes, concrete.
I've just done this with a power floated coloured floor.
But you could just bulk float then tile etc