Billbill84
Well-Known Member
Hi all. The other day I posted about my fully finished basement having barely any insulation in the rim area (saw this while removing dummy vents to winterize hose bibs). In winter winter my basement is the coziest place in the whole house so warm. Actually the colder it is out side, the warmer it is down there, which is nice.
But back to my rim question, after my theory (in last thread about house), of why my copper pipes never froze near the very poorly insulated rim, sort of contradicts what happens to exposed rim joists having condensation issues which I do NOT have. It seems what I am able to see of the rim is pretty clean. It's all drywall in basement and ceilings and it's dry down there too, I sometimes run the dehumidifier in winter as well. The rim is above a drywalled ceiling which acts as it's own pocket of warm beneficial air to the surrounding area.
Wouldn't there still be some condensation on the rim joist even if it's sandwich between sub floor and drywall ceiling?? Is the warm air so dry that it will not condense to the cold rim? Air flow seems to be helping me in some way I don't fully understand yet. I did however carefully stuff some R30 behind the copper pipes just incase but then I started to worry about a potential condensation issue behind the R30 that, technically should already be going on with a sort of exposed rim. Any scientific thoughts are appreciated haha.
But back to my rim question, after my theory (in last thread about house), of why my copper pipes never froze near the very poorly insulated rim, sort of contradicts what happens to exposed rim joists having condensation issues which I do NOT have. It seems what I am able to see of the rim is pretty clean. It's all drywall in basement and ceilings and it's dry down there too, I sometimes run the dehumidifier in winter as well. The rim is above a drywalled ceiling which acts as it's own pocket of warm beneficial air to the surrounding area.
Wouldn't there still be some condensation on the rim joist even if it's sandwich between sub floor and drywall ceiling?? Is the warm air so dry that it will not condense to the cold rim? Air flow seems to be helping me in some way I don't fully understand yet. I did however carefully stuff some R30 behind the copper pipes just incase but then I started to worry about a potential condensation issue behind the R30 that, technically should already be going on with a sort of exposed rim. Any scientific thoughts are appreciated haha.
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