• 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?

  • Builder has suggested using ventilation tape (which is literally a fraction of the cost) instead of formal airtightness tape.

    Why? What savings are we taking about, it can't be that much in comparison to what you're spending on windows?

    I wouldn't do it, that's not the place to be skimping imo.

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