I'm putting in a covered porch with wooden decking. New construction. The porch abuts the house on one side and is open on the other 3. Will be approximately 3-4 feet above fin. grade. Supporting the 3 sides of the porch are block walls with brick veneer. No openings in theose walls(yet). My question is: does a porch like this need to have openings that will allow air below the porch?
Covered porch construction
Jan 17, 2008
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What does the porch's floor look like? Typical decking with gaps, or solid? I'd say if solid, you're really going to need vents.
at this stage, I don't know. leaning towards small gaps. 1/4" max.
Yes, some ventilation would be good. Perhaps a 24 x 30 screened opening in each end. Also you could crawl under there and get all that stuff people and kids are gonna drop through the gaps.
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It needs air to keep it dry, if no rain will ever hit the deck it can be smaller openings.
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