Hi all,
I'm finally getting round to a long-postponed project - insulating under the living room floor.
It's a standard suspended timber floor on the ground floor of a victorian terrace - two rooms knocked together. The boards a bare, sanded, varnished, gappy, drafty, with a few rugs around. Under the floor there is a void about two feet deep before you hit the soil. There certainly seems to be adequate underfloor ventilation thanks to airbricks, hence the fact that the room above is like a field in Alaska.
I'm having some kingspan delivered tomorrow from the seconds place. The plan is to wriggle underneath and wedge carefully cut strips of kingspan in between the joists. Apart from increasing the themal properties of the floor, draft-proofing is a major objective. So I'm planning on using some expanding foam around the edges (applied from the underside obviously). As to the gaps between the boards themselves the quickest and easiest solution would be to use some very adhesive tape, again applied from the underside. Any comments on this? I was thinking of using something like this:
Martin