Garage Roof Ventilation Requirements

The open area of a vent is sometimes listed on the roof air vent as nfva net free vent area.

Garage roof ventilation requirements.

Most effective ventilation uses a ridge and soffit continuous ventilation system but even these designs can vary from roof to roof. Solar roof mounted garage fans. If not measure the size yourself. You can calculate attic ventilation requirements by determining the square footage of your attic.

So if you don t have the funds to install more windows or don t want to keep the operating door cracked open to help with the problem for security reasons the next best solution is an exhaust fan. Enter square footage calculate or enter the square footage of the attic or area to be vented. The fan runs all day on solar keeping the entire space cool with no cost to operate. If your garage suffers from poor ventilation there is little you can do about it without costly repairs or renovations.

If you don t know how your roof vents work or if you re unsure about your attic ventilation in general you should talk to a roof inspector about your current system and any inherent weaknesses that may be at. Attic ventilation works on the principle that heated air naturally rises primarily utilizing two types of vents. Step 2 purchase an exhaust fan kit. Federal housing authority recommends a minimum of at least 1 square foot of attic ventilation evenly split between intake and exhaust for every 300 square feet of attic floor space.

The building code lets you reduce that by half under some conditions but more roof ventilation is usually better. Intake vents located at the lowest part of the roof under the eaves allow cool. The amount of space you devote to intake must be equal to the amount you allow for exhaust and these must be calculated according to the size of your attic and slope of your roof. In of vent opening per 150 sq.

A roof which has been put straight on the garage ceiling is probably best for your purposes. A self installation kit is probably the best variety for the needs of an attached garage. Then aim for about 1 sq. When the sun beats down on the roof of your garage and there s no insulation to keep the space cool solatube s roof mounted garage fans are the ideal solution.

The key to proper ventilation of your roof and attic is balance.