> What about humidity? I have no actual water seeping in anywhere but the endless humidity destroying my flooring. Whole-house dehumidifiers. One popular brand

> What about humidity? I have no actual water seeping in anywhere but the endless humidity destroying my flooring. Whole-house dehumidifiers. One popular brand in the US: * https://www.santa-fe-products.com https://www.santa-fe-products.com Search Youtube (and generally) for the topic and you'll get a bunch of building science stuff on the topic. Just because your thermostat says the temperature is fine (and so does not run AC or heating) does not necessarily mean your internal environment is (totally) "fine". Perhaps, to start with, buy a (few) humidity metre (hygrometer) and see what various rooms / floors are in your house: * https://www.amazon.com/ThermoPro-TP50-Digital-Thermometer-Temperature/dp/B01H1R0K68/ https://www.amazon.com/ThermoPro-TP50-Digital-Thermometer-Te... Ideally they should be 50±5% (though ±10% can be fine).