How To Install A Vent Pipe Through The Roof

Choosing a whole house fan.

How to install a vent pipe through the roof.

Then flash it with the shingles that you removed prior on both sides and above the vent. 4 repeat the ventilation process with any other fixtures you re installing. There can t be any drains above the point. 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.

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. Be sure to extend the pipe up at least 2 to 3 above the roof to prevent snow buildup from causing problems. The lower half of the flange sits on top of the shingles. This old house general contractor tom silva shows how to properly install a roof mounted bath fan vent.

Vent a fixture by cutting into the drain line using a saw. Go into your attic. The true vent is aligned vertically and attaches to your drain line through the roof. Cut through the plywood and roofing material with your reciprocating saw.

Install the vent and seal the underside of the vent flange with roofing grade sealant caulk. Yes you can vent a range hood through the roof using a 6 single wall pipe. True vents also have no water running through them. Extend a pipe upward from the tee and tie it into the main vent stack.

See below for a shopping list and tools subscribe. With the pipe in a vertical position trace around the pipe. Nail the lower corners with roofing nails and tar the heads. 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.

Follow the outline you marked. Where the scrap wood hit the understructure of the roof we drilled a hole straight through to the outside. Extend the vent pipe outside the building according to building regulations. Position the vent pipe up to the bottom of the roof.

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. Slide the vent under the shingles so they cover the top half of the vent flange. Apply a bead of asphalt roof cement on the bottom of the vent.