How To Cut The Roof For A Vent

Where the scrap wood hit the understructure of the roof we drilled a hole straight through to the outside.

How to cut the roof for a vent. Next using your drill bit as your center use your ruler and a marking pencil to measure the same size space onto your roof. Step 1 cutting a hole. Step 3 filling the hole. Before you begin cutting your hole you will need to mark out the area where you intend your vent to go.

How to cut a hole for your roof air vent. Step 2 fitting the air vent. Using a circular saw with a carbide tip blade one of the roofers plunges the saw into the ridge at the ends and then follows the chalk line. Use your jigsaw or reciprocating saw to cut along the measured lines.

To begin the ridge vent installation they measure down 3 inches from the top of the ridge and snap a line to cut the opening for the ridge vent. Before you cut your boards you ll need to measure the width of your building and calculate the exact length of each rafter. From the roof the roofer will cut away shingles and underlayment and use a saber saw to cut a hole the same size as the diameter of the vent. Following manufacturer s instructions for securing the vent the roofer will likely spread plastic roof cement on the underside of the vent place it over the hole slip the flange under the top side shingles and lay the flange over the down slope shingles.

If you re framing a gable roof on a new house or building a shed or even a doghouse with a gable roof you ll need to cut a number of roof rafters. The roof rafters provide integral structural support to the roof.