how to measure if enough ventilation below a deck?
I think my 15 year old PT deck failed due to lack of ventilation. Many boards either expanded or were placed so close as to have no space inbetween. Don't boards usually shrink after construction?
I'm about to have an ipe deck put down and I want to be able to determine if humidity will be a problem. The deck is surrounded by ~50% by the house/garage/ family room. I suspect this is the problem - not enough flow through even if the sides were largely open.
Any way to quantitate this or should I plan already on including a fan? What sort of exterior fans are there for this sort of thing? Any other way to handle this?