How To Cut Vent In Roof

Be careful not to damage any foundation beams supports or other essential columns.

How to cut vent in roof.

Remember to allow for the lip on the vent mechanism that will fit over the opening and rest on the surface of the roof. Have a partner hold the ladder steady so you can work safely. Go into your attic. 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.

The hole needs to be taller than your pipe diameter as the pipe isn t passing through the roof at a perpendicular angle. Hold the plumb bob string against the bottom of the roof decking. Center the plumb bob over the vent s exhaust outlet. With the pipe in a vertical position.

Now that the hole was cut my friend ran back down the ladder and up into the attic so that we could connect the vent pipe through the roof. Set the compass to draw a circle about 1 8 inch larger than the pipe s diameter. How to cut a hole in a roof for a range vent 1. Cut through the plywood and roofing material with your reciprocating saw.

Step 2 fitting the air vent. Remove any drywall from the inside and then cut through to the outside of the roof. The size of the rectangle will depend on the size of the vents but. Measure the body of the vent.

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. How to install a vent pipe through a roof step 1. Position the vent pipe up to the bottom of the roof. Measure the pipe s outer diameter.

Once the roof has its shingles removed you can begin cutting. Using the tape measure determine the size of the cut into the roof that will be necessary to insert the vent into the space. 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.