I probably would have too.mångstekta said:
But it's good that we agree on leaving the matches at home
We suffered from excessive humidity in the attic after a major renovation (new upper floor). Inadequate/nonexistent ventilation led to some growth, but primarily the raw wood sections swelled to the point of bulging. The suggested solution following a moisture investigation was to install mechanical ventilation to create negative pressure, thereby reducing the moisture load. We decided to go all in and installed FTX after the roof was redone. The result after a couple of years is good. No visible signs of moisture problems, and the indoor air quality is good. The difference with and without ventilation is very noticeable; we tested it when the ventilation was turned off, and already after a day, you can feel that the air is bad, and you wonder how you managed to live in it before. However, we haven't conducted any follow-up measurements. A hot tip is to install ventilation when the roof is off if possible. It was hot and cramped for our installer, 50-60 degrees such in the afternoons, so he only worked in the mornings with the ductwork.