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J3N0991 OP t1_j068w34 wrote

Reply to comment by snash222 in Relative Humidity readings from my basement after carrying out remedial works - love that trend [OC] by J3N0991

Northern hemisphere, Cambridge, UK. Turns out we had some missing tiles on the roof of our house on one side that have been replaced along with the flashing that connects to the house next door, and on the other side we had some damaged flint work where a previous owner had removed an old gas boiler and not plugged the hole properly so rain was getting in sideways and working it’s way down there too…

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snash222 t1_j069c7d wrote

Good work. Water in basement is a pain and not healthy!

It looks like your humidity is varying daily as your heat comes on, making the relative humidity drop, when the heat turns off (at night?) it gets colder and RH goes up.

Has it been getting much colder outside the past couple weeks? If so, that will drop the humidity overall as well.

Hopefully it was your work that caused the drop!

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J3N0991 OP t1_j06ao7x wrote

I think the nightly peak is caused by there being a bedroom in the basement so I think it’s a build up from the moist meat bag humans… 😂 In the daytime it’s just an office space for one. The first few days I had a dehumidifier running to hurry it along but that’s not even fired up in 4-5 days. Once other spaces are renovated it’ll just be an occasional guest bedroom so hopefully no peaks at all!

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AnaphoricReference t1_j06bln3 wrote

That would be my guess. Humidity in my home dropped from 60 to 40 in that same period in the Netherlands as the weather changed from very wet to freezing all day.

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