How To Open Attic Vents

Space the holes 12 to 14 in.

How to open attic vents.

Secure the vents in place using the included hardware. The net free vent nfa area of each vent you have installed should be clearly marked on it. Screw holes through both flanges. Whole house fans powered attic fans.

You simply add up the nfas of all your vents and divide that number by the area of the attic to. 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. Raise the vent up to the soffit photo by merle henkenius next lay the strip vent down on a flat wood surface such as a plywood sheet or long 2 x 4 and drill 1 8 in dia. A hot ceiling tells you that the attic is acting like a solar oven raising your cooling bills and.

Adding a slotted piece of wood or siding to this area allows air to flow in and out of your attic. Things have been ok low energy bills house very comfortable. Attic ventilation is not a simple task and missteps can lead to roof leaks mold growth and other hazardous conditions. Calculate or enter the square footage of the attic or area to be vented.

These exhaust vents provide a reliable open area for warm air to escape the attic providing essential outward ventilation across the entire length of the attic versus a few isolated areas from other smaller vents. Help purchased home 8 years ago with 2 power attic vents. The area on your roof where two sides meet and form a triangle is called a gable. Using a saw cut holes that are a tad smaller than the vent you re using.

When the attic becomes part of the home to be heated and cooled open wall gable vents and roof vents are no longer feasible but the underside of the roof the sheathing and rafters can still. Your roof vents may not look. Told that the 2 attic power vents are the only attic ventilation i have the house does have vented soffits every other soffit cover is vented. If you don t see any attic vents on the roof or in the eaves you need to add some.

Since gable vents rely on strong winds to make them effective gable vents are often used in addition to other attic vents including soffit vents. Look at your eaves and roof. Fans and vents may be installed on the roof system that will draw the air out of the attic space and exhaust it to the exterior. These fans may be controlled by a switch or a thermostat which detects heat build up in the attic space and automatically exhausts the attic space.