A quick step by step guide on how to flash a metal roof.
How to install roof vent pipe flashing.
Once you ve placed the flashing on the pipe make sure the pipe doesn t move pulling the rubber gasket out of place.
Over time the flashing around plumbing vents can rust or deteriorate and it will need to be replaced.
Metal roof flashing installation.
Kozy kollar products are the only roof vent boot flashing or exhaust hood you install from inside a building and over shingles or similar roofing materials.
Center the pipe in the flashing and push the flexible front corners up or down so that the flashing pipe is parallel to the vent pipe.
Roofing nails per side photo 2.
The edge of the roof has thin metal flashing that helps water drip off the roof without damaging the home or causing a leak.
Figure 3 install flashing vent pipe boot over vent pipe.
How to flash a metal roof.
This type of flashing is common and inexpensive for the contractor to install because one flashing unit can fit pipes from 1 1 2 inches wide to 3 inches wide and there is no custom work needed to size the flashing.
Make sure to nail the flashing in the places that are.
Rubber vent flashing automatically adjusts to any pitch lift the vent enough to spread caulk under the sides but not the bottom edge then nail with three 1 1 4 in.
Do not over nail nail only where and when necessary.
Place the next course of shingles over the vent boot and install with a layer of asphalt cement.
This helps to prevent water from getting in the sides.
The main reason homeowners choose to install or replace the vent pipe flashing on their roof is to stop or prevent leaks which may also help extend the lifespan of the roof.
Open valleys have metal flashing to protect this critical area of the roof.
Where nails have been used apply some asphalt cement over the head of the nail to ensure a watertight seal.
Most newer homes will have a flexible vent pipe flashing that is made of aluminum and a rubber seal that the pipe passes through.
