Garage Roof Ventilation Requirements

Enter square footage calculate or enter the square footage of the attic or area to be vented.

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. 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. 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. Intake vents located at the lowest part of the roof under the eaves allow cool.

You can calculate attic ventilation requirements by determining the square footage of your attic. 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. Attic ventilation works on the principle that heated air naturally rises primarily utilizing two types of vents. If not measure the size yourself.

Then aim for about 1 sq. 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. Solar roof mounted garage fans. The key to proper ventilation of your roof and attic is balance.

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 open area of a vent is sometimes listed on the roof air vent as nfva net free vent area. If your garage suffers from poor ventilation there is little you can do about it without costly repairs or renovations.

In of vent opening per 150 sq. The building code lets you reduce that by half under some conditions but more roof ventilation is usually better. The fan runs all day on solar keeping the entire space cool with no cost to operate. Let owens corning roofing help you calculate exactly how much ventilation you will need for a healthy and balanced attic with our 4 step ventilation calculator.

A roof which has been put straight on the garage ceiling is probably best for your purposes.