How Do You Vent An Attic

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

How do you vent an attic.

Simply secure the vent into place with screws and your vent is complete. After creating a space for the vent line the hole with caulk and place the vent inside. Intake vents located at the lowest part of the roof under the eaves allow cool air to enter the attic. 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.

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. Enter square footage calculate or enter the square footage of the attic or area to be vented. 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. Secure the vents in place using the included hardware.

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. 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. Airspace from the soffit to the ridge by installing a continuous air chute in each rafter bay. 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.

These fans may be controlled by a switch or a thermostat which detects heat build up in the attic space and. 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. Whole house fans powered attic fans. To effectively ventilate your roof create a 1 in.

Attic ventilation works on the principle that heated air naturally rises primarily utilizing two types of vents. Hot air exhaust vents located at the peak of the roof allow hot air to escape. 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.

Space the holes 12 to 14 in. Using a saw cut holes that are a tad smaller than the vent you re using. Clear any debris or insulation blocking the ventilation holes. The venting space should be equally divided between intake.

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