Steve B spake thus:

I have a cabin, and this trip, it was COLD up there. I noticed several
major air leaks, which I addressed with gaskets, wiper gaskets, and
weatherstripping.

I saw a program once where they used smoke to detect leaks. They had IIRC a
piece of cotton rope that gave out a wisp of smoke, and this wisp followed
any air flow.

Would I put a good sized fan outside blowing in to create positive pressure
inside, or put it exhausting out to create negative pressure in order to
follow the wisps of smoke and see where to chink and caulk?

My guess is you'd have better luck blowing in from the outside. It would
be more work; you'd have to aim the fan where you suspect there might be
a leak, then check it on the inside. But putting the fan inside would
likely cause so much turbulence it'd be hard to tell whether the smoke
wisps were being blown by the fan or by a leak.


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