Roof Slope Transition Flashing

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.

Roof slope transition flashing.

Transition flashing is also referred to as pitch break trim and comes high to low or low to high. The top selling transition flashing product is the all style large retro split storm collar roof flashing for 6 in. The most common feature for transition flashing is waterproof. Yes transition flashing can be returned and have a 180 day return period.

What is the most common feature for transition flashing. The base is then covered by another metal flashing piece lapped over it. Transition flashing is used when you have a roof that has two different pitches. 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.

Nrca berg points out that while continuous metal flashing is used at wall junctures in certain steep slope roof installations special flashing installation details are required that are different from a step flashing sealed roof and even when installed according to specifications this approach can leave the roof vulnerable to leaks or moisture damage from wind driven rain. This flashing detail is important to maintain the integrity of the roof and it also helps to prevent oil canning as you can see from the picture. What is the top selling transition flashing product. One common method is to lay the edge metal under the eaves membrane and over the rake.

The transition trim is located where the two different pitches meet so the metal roof does not leak. Protect the eave from ice dams and sideways rain step one in steep slope roofing is the edge flashing. This height has become the industry standard and is recognized by most membrane manufacturers. Two part flashing systems consist of a base flashing often step flashing that is laced into the finished roof material.

The 8 inch height prevents water from pouring over the top of the flashings into the building or system. Vertical flashings must be a minimum of 8 inches above the completed roof surface. Details concrete masonry roofing wrb flashing. You can see the transition flashing which separates the two roof planes at the pitch change.

Two ways to flash roof edges. 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. The upper panels are installed so that their bottom edge falls on the bend of the transition flashing so only the lower slope of the flashing is visible. The flashing is secured with the same roofing screws as the panels into the top slope and with gasketted screws through the flashing into the top of the ribs on the lower panel.

It is important that the lower leg of the transition flashing be installed so that it follows the slope of the lower panel ribs maintaining the positive slope. The second piece should not be fastened to the base so the two pieces can move against each other independently when the roofing materials shift with seasonal change.