laying new concrete floor

alexbetts · 15 Oct 2008

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 · 15 Oct 2008

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 · 15 Oct 2008

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

tuckjointer · 15 Oct 2008

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

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

alexbetts · 16 Oct 2008

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 · 16 Oct 2008

tuckjointer said:
noseall said:

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

Click to expand...

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

it is applicable to the entire depth of the slab.

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laying new concrete floor

alexbetts

noseall

noseall

tuckjointer

alexbetts

noseall

DIYnot Local

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