Resources
Roof Vent Calculator
The Tool Below Will Help You Determine HUD Minimum Ventilation Requirements.
The U.S. Department of Housing and Urban Development (HUD) sets standards for the Minimum Net Free Area. This figure is calculated based on the floor space of the attic (square footage). It is recommended that 50% of the Net Free Area is provided by Roof and Ridge Vents, with the remaining 50% provided by Under Eave Vents. FLAMCO manufactures all of the products necessary to properly ventilate homes according to these standards.
Frequently asked questions (FAQs)
Click any of the FAQs below to learn more.
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