Temperature is a consistent schedule each day which accounts for part of the daily variance (along with human usage of the space), the basement is well heated.

Love it! Not needing the dehumidifier is the dream but I’m pleased to have it down there as a backup for now, saves my anxiety!

I’d always been aware that we had a humidity issue down there and we’d had spots of mildew appear behind picture frames and the like… I’d been wilfully ignoring it until recent high profile news stories around mould lung. With people sleeping down there it seemed sensible to throw the kitchen sink at it and get to the bottom of the issues - it had been tanked around 8 years ago so I was confident the issue wasn’t rising damp.

Can confirm temperature has remained consistent day to day - the space is heated with the thermostat to maintain target temps to the same schedule. If more useful for comparison the dew point has been dropping and VPD increasing in line with the above which would indicate an actual decline in moisture.

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!

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…