Flat Roof To Pitched Roof Transition

Transition flashing installation guide 1.

Flat roof to pitched roof transition.

This latest project was in early december in lambeth ontario for a residential home that had an existing sloped or shingled roof that needed to tie into a ne. They would be more accurately called low slope roofs. Measure 1 1 2 from bottom edge of transition flashing. You ll have a steeper part of your roof turning into a lower slope so there s a steeper pitch up top and a lower pitch on the bottom.

We need to do something where that change happens so the panels can go down and water can come off hit the lower slope and come off the roof. A roof pitch transition is a line in the roof plane that changes pitch. We re going to do a pitch transition or change. With the proper roof slope and drainage installation precipitation is not a problem for buildings with flat roofs.

Getting water off a flat roof sounds like a tricky scenario. However flat roofs are not really flat. The roof plane goes from one pitch to a lower pitch. In many instances the lower roof is deep enough that the exposed roofing isn t visible from the ground.

Install bottom roofing panels first 2. This is a fairly common roof detail. After bottom roofing panels have been installed set one piece of transition flashing down where the top portion non hemmed of the transition flashing lies flat on the upper roof 3. See the illustration below.

But in cases where it is visible and either the homeowner or an architect doesn t want to see a big exposure the self sealing characteristics of epdm or tpo the low slope roof membranes we typically use will provide some measure of. Pitch transitions are a common roof detail. Armourfix and armourvalley membranes must be installed and extended 60 90 cm up the main roof underneath the shingles in order to assure a waterproof connection. A very important detail is where the flat roof is connecting the pitch roof.