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obtusemoose399
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# Posted: 16 Sep 2019 08:54
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Hoping someone with more knowledge than I can help me out here...
For the past several months, two pieces of the tongue and groove ceiling in my cabin have become increasingly discolored. Specifically, it is where two pieces 'are butted' together along the short seam. The discoloration feels slightly damp, but there's no evidence of water leakage anywhere else, either above or below. The roof itself is metal, and the ceiling is fiberglass insulated.
Has anyone else experienced anything like this? I'm hoping that it's just some weird condensation-related issue, since I don't want to pull the whole ceiling down!
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Duhmojo
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# Posted: 16 Sep 2019 09:34
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It would have to be condensation if there's no evidence of water, but of course if the area is enclosed, that's a hard claim to 100% make. The wood is untreated/sealed will change in color with age, but not feel damp. If there's moisture, there's a source of it. Is the damp area attached to a roof truss runner? Water could be running along the runner. It's damp, not full on wet or dripping. Moisture in unsealed wood will absorb and there might be little to no evidence otherwise after it's been absorbed.
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snobdds
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# Posted: 16 Sep 2019 11:00
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Get a moisture meter and start probing around. If that spot has more moisture than the rest of the ceiling, you have a roof leak. If the moisture is the same throughout, then it's just the wood turning due to something in the wood.
They're cheap and get the kind used to test firewood.
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