laying new concrete floor

[alexbetts]

Hi all
i intend to lay a new floor through out the house what are the depths at each level i.e.

Hard core
dpm
insulation
screed

and what insulation boards would be best and is there a special way to lay these boards

Thanks

 

[noseall]

100mm mot compacted stone (hard core layer).

25-50mm sand blinding also compacted.

1200 gauge polythene dpm.

125mm jablite (polystyrene) floor insulation or 80mm celotex/kingspan thermafloor insulation.

another layer of protecting polythene (to jablite only).

100mm poured concrete slab.

75mm screed.

insulation boards are snug fitted and in some cases the joints are taped with foil tape.

 

[noseall]

you will also require a 25mm polystyrene upstand to all outside walls.

 

[tuckjointer]

you will also require a 25mm polystyrene upstand to all outside walls.

Only for the top layer of screed though..right.?

 

[alexbetts]

Thank you very much for that info i was a bit worried it was going to be a night mare to put this insulation down.

 

[noseall]

you will also require a 25mm polystyrene upstand to all outside walls.

Only for the top layer of screed though..right.?

it is applicable to the entire depth of the slab.