Connecting Attic Vents

Continuous or individual soffits.

Connecting attic vents.

Use no hub fittings to connect a pvc fitting to cast iron or abs pipe. Try to keep it close to the fan location. Photo by merle henkenius. How to check attic ventilation.

Attic ventilation works on the principle that heated air naturally rises primarily utilizing two types of vents. Start in the attic and drill a hole through the roof in the desired vent location. With the help of an assistant raise the vent up to the soffit and center it over the cutout slot. Leave the drill bit sticking through the roof so you can find the hole.

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. From up on the roof use a jigsaw or reciprocating saw to cut a 4 in. Screw holes through both flanges. Soffit vents are one of the most popular intake vent styles.

They are easy to install under the roof s overhang which is known as the soffit are generally hidden from sight and provide excellent protection from weather outdoor debris and pests while still allowing air to flow into the attic. Intake vents located at the lowest part of the roof under the eaves allow cool. Moreover if you have asphalt shingles on the roof attic. Cut the pipe and connect a reducer tee fitting.