richo106 Posted February 11, 2023 Share Posted February 11, 2023 I was just wondering if I need cavity closers? In my new extension I have 100mm cavity with 90mm PIR (Thermaclass). Do I just need standard (non insulated) cavity closers on these? In my original house I have 70mm cavity that will be blown EPS Any advice/information and recommendations on cavity closers and best way to fit them will be very much appreciated All the brick/block work is in place so need to be retrofitted Many Thanks Link to comment Share on other sites More sharing options...
Miek Posted February 12, 2023 Share Posted February 12, 2023 Close the revels with PIR cut to a snug fit. You dont need dedicated closers , especially retrofitting. Link to comment Share on other sites More sharing options...
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