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1696211 No.1696211 [Reply] [Original] [archived.moe]

How do I tell if this is a leak or condensation? And if the latter how do I stop that? Its in my workshop so it's not heated or cooled unless I'm in it.

The moisture is at the top peak of my 20 ft gambrel roof. It runs the entire length.

>> No.1696218

just take out the insulation and look at it while it rains its not rocket science mate

>> No.1696220

I assume though that I'll just see moisture, and not a drip. Couldn't it at that point still be either?

>> No.1696222


If it is wetter while raining it's probably a leak. If it's wetter when it's humid and the temperature is colder inside than it is outside then it's probably condensation. It's not brain surgery.

>> No.1696442

Looks like the peak needs a much wider ridge cap. Storms often blow rain so hard against shallow sloped roofs that it will blow up under the ridge cap. You can help stop that by installing a barrier just under the cap edge.

>> No.1696561


>> No.1697666

Mould like that means a leak. Get rid of your insulation and wait till it rains. Find where the water is getting in.

After the leak is fixed, to help with condensation worries, make sure there's a gap between your roof (tiles, panels etc?) and your insulation. Maybe try condensed foam with a silver backing. Losing airflow below your tiles will mean moisture gets trapped.

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