How Do You Vent An Attic

Simply secure the vent into place with screws and your vent is complete.

How do you vent an attic. For a gable vent you start by removing the siding and sheathing in your determined area with a circular saw avoiding any unnecessary contact to the gable studs. 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. Intake vents located at the lowest part of the roof under the eaves allow cool air to enter the attic. 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 venting space should be equally divided between intake. Airspace from the soffit to the ridge by installing a continuous air chute in each rafter bay. 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. Attic ventilation works on the principle that heated air naturally rises primarily utilizing two types of vents.

Please see an enlargement in additional information below. Calculate net free vent space building codes typically require 1 square foot of venting space for every 150 square feet of attic space. Hot air exhaust vents located at the peak of the roof allow hot air to escape. Typically you would have a gable vent on each end of the attic.

Using a saw cut holes that are a tad smaller than the vent you re using. Space the holes 12 to 14 in. Attic venting process mark the spacing of your soffit vents in between the rafters or joists. 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.

In addition insulation baffles must be installed at the point where the attic floor meets the roofline to prevent the attic insulation from migrating into the cavities and restricting the airflow from the soffit vents. Screw holes through both flanges. After creating a space for the vent line the hole with caulk and place the vent inside. Enter square footage calculate or enter the square footage of the attic or area to be vented.

Secure the vents in place using the included hardware. Clear any debris or insulation blocking the ventilation holes. These fans may be controlled by a switch or a thermostat which detects heat build up in the attic space and. Whole house fans powered attic fans.

Air chutes when combined with soffit vents and a ridge vent will help prevent problems with condensation and ice dams.