Step Flashing Vs Roof To Wall Flashing

Learn how to install it below.

Step flashing vs roof to wall flashing. Roof to wall 1 step flashing 5 material. This is true no matter what type of roof covering material is installed. Get free shipping on qualified step flashing or buy online pick up in store today in the building materials department. A headwall is a level junction where a roof meets a wall.

Bend it down and back to sit flat on the corner. Lay a bead of. This final layer is called counter cover or cap flashing and commonly consists of aluminum galvanized steel copper tin or even plastic. And in section 905 which covers the installation of all roof coverings of the 2015 irc the first sentence requires compliance with the code and the manufacturer s.

This illustration shows proper flashing at a headwall condition. Headwall flashing should extend up behind the exterior wall covering and down over the roof covering material as you see here. Continuous flashing against a sidewall is one way to install a roof but it s not the correct way. Step flashing step flashing redirects the water back onto the shingle.

In contrast to step flashing the next layer is installed in a continuous strip. 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. Corner flashing comes first. Code s eye view step flashing vs.

It sits on top of the finished roof and covers the step flashing. Even if one piece of step flashing fails the flashing and shingle below it start the process over again. Aluminum 3 galvanized steel 1 plastic 2 product length in 5 10 3 50 or greater 3 product width in 15. Every asphalt roofing manufacturer s installation instructions that i have ever seen specify step flashing as the preferred way to flash the roof to wall juncture.

How to install roof flashing against a wall. It is used for roof to wall flashing. Once you ve shingled up to the sidewall cut a piece of step flashing at a 45º angle from the outside corner to the bent seam. Multiple pieces of the flashing will be installed in layers with shingles to ensure the water flows away from the wall.

Step flashing is a rectangular piece of flashing bent 90 degrees in the center. Truck tool rental. By glenn mathewson login or register to download the pdf version of this article.