The Deck Professor

Lessons / Water and durability

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Venting the space underneath

Let air move under this deck
Air under the deck
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Solid skirting on all four sides.

Every number here is a working estimate. Check it with your building authority.Turn JavaScript on to work the lesson. The drawing shows how it starts.

The rule this lesson teaches

Openings at opposite ends give a cross draught; over a gas line, vent at least two sides.

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Sources