Build Attic Ventilation

To better understand attic ventilation it is best to start with the basics.

Build attic ventilation.

Power gable vent shutter is designed to be used with master flow egv pg series electric gable fans. Attic ventilation serves two main functions. A 30 x 40 ft. Attic fan ventilation attic fans are intended to cool hot attics by drawing in cooler outside air from attic vents soffit and gable and pushing hot air to the outside.

Most building codes require a ratio of 1 150 ventilation space to attic floor space. To lower attic temperatures and to remove. In order to facilitate this exchange of warm and cool air the general rule of thumb suggests installing at least 1 sq. Measure the gable to decide how large a vent you can.

Building codes vary. In of vent opening per 150 sq. However if your attic has blocked soffit vents and is not well sealed from the rest of the house attic fans will suck cool conditioned air up out of the house and into the attic. If your attic isn t ventilated well that humid moist air will build up in the attic space and can cause mold to grow.

Of vent for every 300 sq. Power gable vent shutter is automatic 20 in. Then aim for about 1 sq. Ventilation of attic spaces is required by most building codes as well as by roofing material manufacturers and the national roofing contractors association nrca.

Constructed of white aluminum that can be painted. First determine your attic area by multiplying the length by the width. Although you can buy manufactured gable vents you might want to build your own wooden vent that matches your home or building s exterior. Attic for example has an area of 1 200 sq.

The recommended ventilation ratio to provide for vented attic assemblies when an air barrier is present is the 1 300 ratio as specified by most building codes. You can also contact your local municipality to check on building code in your area. Cool your home lower energy costs and increase efficiency with an attic ventilation fan. Therefore whole house fans are best suited for open well vented attics.

The shutter will open when the electric gable vent is operating. This article will show you how it can be done.