Builder has suggested using ventilation tape (which is literally a fraction of the cost) instead of formal airtightness tape.
Hard to argue with logic that it would work fine given it's design to make ventilation systems airtight...
Is it a bad idea?
The silver stuff? I expect the glue will fail in the short term and it’ll all peel away eventually. If I was closing something up permanently under plasterboard etc I’d want to know it’s gonna be fine for 20+ years.
If something is under plaster board, and its tight fitted how is it gonna peel off?!
@dbr started
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Builder has suggested using ventilation tape (which is literally a fraction of the cost) instead of formal airtightness tape.
Hard to argue with logic that it would work fine given it's design to make ventilation systems airtight...
Is it a bad idea?