Dryer Vent vs. Wood Deck
Moisture from the vent isn't necessarily a problem
When I built a wood deck over an existing dryer vent, I extended the dryer exhaust to a vent in the decking so that moist air wouldn't accumulate under the deck. Still, I'm worried that the moisture coming out of the vent will cause problems with the wood. Should I be? Please don't suggest that I move the deck!
— Rob, Cold Spring, NY
Tom Silva replies: Too much moisture isn't great for wood, particularly if it never has a chance to dry out. But I don't think there will be a problem in your case. After all, decks get rained on all the time. Yet they'll last for decades, provided they're built with rot-resistant wood and have gaps between the boards, which allow air to circulate easily.