I will be removing current floor slab in the house and replacing with an insulated slab with UFH. I'm also aiming to do without a separate screed layer - simply powerfloated concrete as top layer.
Intend to have a powerfloated concrete slab which will contain the UFH pipes (DPM to add still):
- Tiles
- Concrete (with UFH) 75mm
- PIR insulation 150mm
- sand blinding or EPS 25mm
- Hardcore ??mm
If I did down to the correct depth without disturbing the ground too much, can I get away with 50mm of hardcore? Current floor has been insitu for the past 70yrs so I would like to think that the ground underneath is pretty compacted over time and would perhaps allow for minimal hardcore?
It's a domestic ground floor (bungalow).
TIA
Intend to have a powerfloated concrete slab which will contain the UFH pipes (DPM to add still):
- Tiles
- Concrete (with UFH) 75mm
- PIR insulation 150mm
- sand blinding or EPS 25mm
- Hardcore ??mm
If I did down to the correct depth without disturbing the ground too much, can I get away with 50mm of hardcore? Current floor has been insitu for the past 70yrs so I would like to think that the ground underneath is pretty compacted over time and would perhaps allow for minimal hardcore?
It's a domestic ground floor (bungalow).
TIA