Attic Crawl Space Ventilation

Vents in the crawl space allow damp humid air to enter the crawl space where it will damage insulation and lead to mold growth.

Attic crawl space ventilation.

The first paragraph of irc section 408 provides the standard requirement for ventilating crawl spaces. The minimum net area of ventilation opening must not be less than 1 square foot for each 150 square feet of under floor space area. A house has 1 500 square feet of crawl space area. Of course sealing your crawl space vents isn t going to solve all your issues.

While it may look dry looks are deceiving. The dirt ground that makes up the floor of your crawl space is full of moisture. Decovent light grey vent unit model 04 68 48 piece 68 48 piece free delivery. Set your store to see local availability add to cart.

Browse a variety of top brands in roof attic crawl space ventilation such as cool attic tjernlund and ventamatic from the product experts. Encapsulating a crawl space eliminates these problems by bringing the crawl space into the building envelope and creating a dry healthy space. Here is an example. Set your store.

The irc prescriptions for venting crawl spaces are contained in section r408 in several paragraphs. This moisture will eventually cause issues as well. Irc section r408 1 ventilation. Silver galvanized steel crawl space fan vent model v2d 146 32 146 32.

To convert to square inches multiply by 144.