Selfbuildnewbie Posted October 20, 2023 Share Posted October 20, 2023 Build is coming along nicely. Currently nearing end of first fix. And then we've realised that we should have put an airtightness membrane in at first floor ceiling level. Too late now that stud walls and services are in. Any ideas on what is the best approach to retrofit a membrane? or another approach to getting airtightness? Building with Nudura ICF in case that's relevant. Link to comment Share on other sites More sharing options...
Redbeard Posted October 20, 2023 Share Posted October 20, 2023 Is the ceiling already in? Or (hopefully) is the plasterboard still to go on? Have you any pics to show the issue? Membrane, lots of tape and some Passive Purple or similar? Of course stud walls make it more difficult, but unless everything is boarded up, that should not make it impossible. You'll just have to cut and tape around each stud (/top plate if applicable). Link to comment Share on other sites More sharing options...
Selfbuildnewbie Posted October 22, 2023 Author Share Posted October 22, 2023 @Redbeard this is the best pic I have. Trusses up and metal studs in but not plasterboard yet - that's going in this week. Sounds like fitting membrane round the studs with lots of tape will be the way forward - was just wondering if there was an easier or better way What's the passive purple stuff? Airtight paint? Presumably you're suggesting just around the studs where we've cut the membrane and used tape, rather than painting the whole membrane? 1 Link to comment Share on other sites More sharing options...
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