April 1, 20242 yr Has anyone installed this over the top of the rafters and under the tiles with celotex / between the rafters. Looks much quicker to install across the rafters than to be faffing around trying to fix it underneath the rafters. Also means that your plasterboard installation is much easier as you are fitting it straight onto the rafter as opposed to PIR. If so, how did you find it, and did you have any cold bridging / condensation issues. Rather sceptical how stapling it to the rafters does not compress it so much that you do get cold bridging across the rafters.
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