Flashing A Slingle Pitch Roof

For pitched roofs regardless of the application or type of flashing used the purpose of flashing is to direct the flow of water that leaks into the intersection down and away from the interior of the structure to the topside of the roofing material.

Flashing a slingle pitch roof.

Drive a nail through the adhesive portion of the ridge cap into the roof decking. The piece that s going to allow us to join the panels on the lower slope and the panels on the higher slope is the pitch transition flashing or the pitch change trim. Protect the eave from ice dams and sideways rain step one in steep slope roofing is the edge flashing. Roof flashing is a thin material usually galvanized steel that professional roofers use to direct water away from critical areas of the roof wherever the roof plane meets a vertical surface like a wall or a dormer.

Standard sizing calls for a 6 inch wide roof leg and a 4 inch drop leg with a 1 2 inch drip bend at the bottom. If you look here at the lower slope roof you can see that we ve already put panel on it and installed z trim as we have been doing elsewhere on this project. Select an angle of slope away from a house into an area with good drainage. Typically these supports are flashed in with a rectangular box that is referred to as a pitch pan.

The pitch pan can be fabricated from metal or plastic. Closer look at flashing. This type of detail is common with all membrane systems and installation is similar with all of them. Measure the outline of the structure to be roofed with a tape measure or get dimensions from a house plan.

Although this solution is more likely to produce a solid long term result it does require a little more work than simply applying sealant along the top edge. It s the same piece. Step 1 use prefabricated mono trusses for the easiest and best framing on a single slope roof. I adjust the angle between the roof and drop legs to match the slope of the roof.

If single piece flashing is to be used according to mr. The key to a good single slope roof is strong framing underneath. Flashing is installed to surround roof features such as vents chimneys and skylights. Berg paraphrasing the flashing needs to be installed before installing the roof shingles the metal flashing is formed with a hook edge and cleated on 12 centers the flashing extends up the wall at least 4.

I hem the 6 inch edge and the 1 2 inch drip bend to stiffen the flashing and minimize oil canning when it expands. Pitch pan flashing it is very common to install pipes or other penetrations for supports through the roof surface.