How To Install Roof Vent On Shingle Roof

Place a line of roofing tar or caulk on top of the vent s flange or its bottom flap using a caulk gun.

How to install roof vent on shingle roof. Drill a hole upward through the middle of the area you desire and leave the drill bit sticking up through the roof so. Glue down shingles to cover the bottom of the vent. Install step and dormer flashing. Attach the plastic ridge vent with 3 roofing nails.

To calculate an example of exhaust and intake use 25 feet of roof ridge vent. Multiply it by 18 square inches the net free air per foot of ridge. Vents evenly spaced underneath the roof provide intake. Trim off excess shingles on roof edges.

First head up to your attic and determine where you want to install your roof vent. Press new shingles onto the caulk and use nails at the top of each shingle to fully secure them to the roof. Using the example above three round vents would be needed 432 144 3 vents or nine square vents 432 50 8 64 or 9 vents. Place the shingle over ridge vent along the reference line and nail the ridge vent to the decking along that side as directed by the manufacturer.

If the plumbing vent is close to the peak of the roof lap the shingles over the peak of the roof. Position the ridge cap shingles over the ridge vent. Attach the other side of the vent to the opposite side of the ridge to fully secure the vent. Attach he ridge cap shingles with two nails each.

Cover the entire flange with shingles to integrate it better into the roof. Trim the shingles away from the ridge vent hole. To install the vent the roofer slips the flange the metal lip of the vent under shingles at the upper part of the hole and rests the flange on top of the shingles at the down slope part of the hole. Next position your ladder against your home and.

Adhere the joint where the cut edges of the shingles meet the dome with roofing tar. Install asphalt shingle caps over the vent using the nails recommended by the manufacturer.