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.

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. After creating a space for the vent line the hole with caulk and place the vent inside. Screw holes through both flanges. Air chutes when combined with soffit vents and a ridge vent will help prevent problems with condensation and ice dams.

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. Attic venting process mark the spacing of your soffit vents in between the rafters or joists. Calculate net free vent space building codes typically require 1 square foot of venting space for every 150 square feet of attic space. Intake vents located at the lowest part of the roof under the eaves allow cool air to enter the attic.

Clear any debris or insulation blocking the ventilation holes. Typically you would have a gable vent on each end of the attic. Normal vented air likes to enter the attic lower down near the bottom third of the attic and as it passes through it will exit higher up near the top third of the attic space. Using a saw cut holes that are a tad smaller than the vent you re using.

The venting space should be equally divided between intake. 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. Whole house fans powered attic fans. These fans may be controlled by a switch or a thermostat which detects heat build up in the attic space and.

Enter square footage calculate or enter the square footage of the attic or area to be vented. To effectively ventilate your roof create a 1 in. Space the holes 12 to 14 in. 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.

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. Attic ventilation works on the principle that heated air naturally rises primarily utilizing two types of vents. Secure the vents in place using the included hardware. Airspace from the soffit to the ridge by installing a continuous air chute in each rafter bay.

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.