What you need to do is get a humidity gauge and get your humidity to below 50%. perferably to below 40%. this will help reduce moisture buildup from the warm meeting the cold.
all it takes sometimes is to run your fans for the bathroom or stove, instead of “oh. its just a little bit of steam and i don’t like the noisy fans”.
Toilet sweat has to do alot with the temperature of water coming in. you could get one of the insulated tank kits. or there is a plumbing crossover that allows some hotwater to mix into the toilet tank on every flush.
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