Flat Roof To Pitched Roof Transition

Measure 1 1 2 from bottom edge of transition flashing.

Flat roof to pitched roof transition.

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. In many instances the lower roof is deep enough that the exposed roofing isn t visible from the ground. The roof plane goes from one pitch to a lower pitch. See the illustration below.

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. Getting water off a flat roof sounds like a tricky scenario. 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. They would be more accurately called low slope roofs.

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. This is a fairly common roof detail. With the proper roof slope and drainage installation precipitation is not a problem for buildings with flat roofs. 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.

Transition flashing installation guide 1. Install bottom roofing panels first 2. We see this quite frequently in log home roofs with porches for example. Pitch transitions are a common roof detail.

The starter strip and first row of shingles must be applied 25 cm from the bottom of the slope roof or main roof above the slope transition. However flat roofs are not really flat. A very important detail is where the flat roof is connecting the pitch roof. A roof pitch transition is a line in the roof plane that changes pitch.