How To Cut Vent In Roof

Have a partner hold the ladder steady so you can work safely.

How to cut vent in roof.

The hole needs to be taller than your pipe diameter as the pipe isn t passing through the roof at a perpendicular angle. Center the plumb bob over the vent s exhaust outlet. Remember to allow for the lip on the vent mechanism that will fit over the opening and rest on the surface of the roof. Set the compass to draw a circle about 1 8 inch larger than the pipe s diameter.

Once the roof has its shingles removed you can begin cutting. Use a tall ladder to reach a taller overhang. Hold the plumb bob string against the bottom of the roof decking. Follow the outline you marked out.

Measure the pipe s outer diameter. Record those measurements on a notepad. Make a template using cardboard that s the width of your overhang with a hole the size of the vent cut in it. The size of the rectangle will depend on the size of the vents but.

How to cut a hole in a roof for a range vent 1. How to install a vent pipe through a roof step 1. Place the air vent into the hole and then screw it tightly into position. Using the tape measure determine the size of the cut into the roof that will be necessary to insert the vent into the space.

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. Be careful not to damage any foundation beams supports or other essential columns. Remove any drywall from the inside and then cut through to the outside of the roof. 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. With the pipe in a vertical position. Position the vent pipe up to the bottom of the roof. Measure the body of the vent.