How To Install A Vent Pipe Through The Roof

Install the vent and seal the underside of the vent flange with roofing grade sealant caulk.

How to install a vent pipe through the roof.

Go into your attic. Extend the vent pipe outside the building according to building regulations. Nail the lower corners with roofing nails and tar the heads. Seal between the top of the vent flange and at the bottom of the roofing shingles as well.

With the pipe in a vertical position trace around the pipe. Apply a bead of asphalt roof cement on the bottom of the vent. Then flash it with the shingles that you removed prior on both sides and above the vent. This is best implemented if a fixture rests close to the stack and the top floor of your home allowing the stack to serve as a vent.

This old house general contractor tom silva shows how to properly install a roof mounted bath fan vent. Choosing a whole house fan. You can buy the proper flashing to install it on a flat roof and a roof cap that has screen around it to prevent insects from entering. The lower half of the flange sits on top of the shingles.

Once we had the pipe extension connected we figured out where the new vent pipe would need to pass through the roof using a piece of scrap wood held flush with the pipe. There can t be any drains above the point. True vents also have no water running through them. 4 repeat the ventilation process with any other fixtures you re installing.

Follow the outline you marked. Usually the vent pipe must extend six inches above the roof or 12 inches 30 5 cm away from vertical walls but double check your building codes and requirements to make sure. How to install a vent pipe through a roof. Slide the vent under the shingles so they cover the top half of the vent flange.

Cut through the plywood and roofing material with your reciprocating saw. Install a sanitary tee. Extend a pipe upward from the tee and tie it into the main vent stack. The true vent is aligned vertically and attaches to your drain line through the roof.

Be sure to extend the pipe up at least 2 to 3 above the roof to prevent snow buildup from causing problems. Yes you can vent a range hood through the roof using a 6 single wall pipe. Position the vent pipe up to the bottom of the roof.