How To Install Metal Roof Flashing Against A Wall

Step 2 install base flashing.

How to install metal roof flashing against a wall.

Continuous flashing against a sidewall is one way to install a roof but it s not the correct way. After you have placed the kickout flashing you will continue with step flashing. It s very important to make sure that you grab the z channel that s below and make sure that you re in the outside leg of the z channel. Step flashing is a piece of metal sheet bent square at 90 degrees.

The covered area of the shingle in the second course should be completely covered by the step flashing. Step 1 choose what kind of metal flashing you need. Step flashing step flashing redirects the water back onto the shingle. You have to first decide what size of flashing you will use.

I m going to install one between each panel directly in the center. Installing the z trim. How to install roof flashing against a wall. Secure the kickout piece to the cement with nails or screws.

Each flashing job is a little bit different and depends on the type of material that the exterior of your house is made of. Align the step flashing with the leading edge of the starter course and nail it in place using one nail in the upper corner. With the end wall flashing in place i use stitch screws to attach it to the z trim and to the gable trim. There are various ways to do roof flashing depending on which part of the roof you are flashing.

In those instances the best thing to do is remove the siding and run the flashing up against the wall and replace the siding so that you have a watertight finish. Laying the kickout flashing use your roofing cement to add a layer to the wall against the roof s base. Install the step flashing before running the first row of shingles install a piece of step flashing along the sidewall so that it sits tightly against the roof. Step flashing is preferred over continuous flashing for roof flashing where the roof meets the wall.

Apply the first course of shingles install the first course of shingles up to the wall and position the second flashing strip over the shingle. Oftentimes if you re installing in a re roofing situation you re going to be coming up against vinyl siding brick wood. While 8 inch flashing usually works well for most purposes you might want to use another size. This can be under shingles or over metal roofing material.

Even if one piece of step flashing fails the flashing and shingle below it start the process over again.