Garage Roof Ventilation Requirements

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

Garage roof ventilation requirements.

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. When you have worked out what your garage is like then you can start looking for a garage exhaust fan. The open area of a vent is sometimes listed on the roof air vent as nfva net free vent area. Proper attic ventilation consists of a balance between air intake at your eaves soffits or fascias and air exhaust at or near your roof ridge.

Solar roof mounted garage fans. A self installation kit is probably the best variety for the needs of an attached garage. Attic ventilation works on the principle that heated air naturally rises primarily utilizing two types of vents. If your garage suffers from poor ventilation there is little you can do about it without costly repairs or renovations.

Most effective ventilation uses a ridge and soffit continuous ventilation system but even these designs can vary from roof to roof. If not measure the size yourself. Then aim for about 1 sq. 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.

Intake vents located at the lowest part of the roof under the eaves allow cool. Enter square footage calculate or enter the square footage of the attic or area to be vented. Step 2 purchase an exhaust fan kit. 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.

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. The fan runs all day on solar keeping the entire space cool with no cost to operate. You can calculate attic ventilation requirements by determining the square footage of your attic. The building code lets you reduce that by half under some conditions but more roof ventilation is usually better.

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.