104F: Solid floor next to unvented bathroom
I recommend continuous flow fans for damp props such as Elta Mori dMEV. Or for deeper pockets & suffer from hay fever, try a VIP – but beware.
continuous flow extractor fan
103E: Continuous flow extractor, blocked causing mould
Often simplest problems & therefore solutions are the most effective. Here bathroom continuous flow extractor fan wasn’t working effectively.