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.
Step flashing vs roof to wall flashing.
This is true no matter what type of roof covering material is installed.
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.
Lay a bead of.
How to install roof flashing against a wall.
This illustration shows proper flashing at a headwall condition.
In contrast to step flashing the next layer is installed in a continuous strip.
Step flashing is a rectangular piece of flashing bent 90 degrees in the center.
Step flashing step flashing redirects the water back onto the shingle.
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.
Roof to wall 1 step flashing 5 material.
Even if one piece of step flashing fails the flashing and shingle below it start the process over again.
Continuous flashing against a sidewall is one way to install a roof but it s not the correct way.
Make corner flashing from step flashing.
This final layer is called counter cover or cap flashing and commonly consists of aluminum galvanized steel copper tin or even plastic.
Learn how to install it below.
Corner flashing comes first.
Bend it down and back to sit flat on the corner.
Headwall flashing should extend up behind the exterior wall covering and down over the roof covering material as you see here.
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By glenn mathewson login or register to download the pdf version of this article.
Get free shipping on qualified step flashing or buy online pick up in store today in the building materials department.
363 46 kb while the building code now allows you to install continuous flashing along a sloped roof to wall intersection the author cautions against it and.
Aluminum 3 galvanized steel 1 plastic 2 product length in 5 10 3 50 or greater 3 product width in 15.
A headwall is a level junction where a roof meets a wall.
Multiple pieces of the flashing will be installed in layers with shingles to ensure the water flows away from the wall.
Code s eye view step flashing vs.
Once you ve shingled up to the sidewall cut a piece of step flashing at a 45ยบ angle from the outside corner to the bent seam.
