Proper Roof Flashing Installation

Two ways to flash roof edges.

Proper roof flashing installation.

The flashing integrates the roof cladding into the wall cladding to keep water out. Details concrete masonry roofing wrb flashing. As a protectant flashing is placed anywhere on the roof s surface that requires extra protection. If nailed to both the flashing may deform under the pressure from shifting brick or wood.

Step flashings are to be installed one per course. One common method is to lay the edge metal under the eaves membrane and over the rake. However when flashing crowne slate with its much larger 10 exposure the flashing piece would need to be 10 x 12. Nail metal flashing called drip edge along the bottom edge of the roof deck near the gutters.

It s much easier to reseal the flashing than it is to patch a water stained wall or ceiling. You will also need rake edge flashing for the sides of the roof. When you install roof flashing you will need to use a sealant. Make sure to install flashing around the chimneys and walls.

Install the step flashing pieces so that they can easily be replaced during a reroof job or else the damaged old. Step flashing redirects the water back onto the shingle. Proper installation of step flashing. The roof deck flange of step flashings are to be fastened to the surface of each shingle in a position whereby the next course of shingles will cover up hide the flashing from view.

Continuous flashing against a sidewall is one way to install a roof but it s not the correct way. While roofing professionals occasionally use nails when flashing they must choose whether to nail to the roof plane or the vertical wall. These areas include anywhere there are intersections or joints such as edges around chimneys vents skylights roof valleys and soil stacks. To install the flashing piece on the first course place it over the end of the starter strip.

Recaulk the joints between the roof and the flashing. How to install roof flashing against a wall. Place it so the tab of the end shingle covers it completely. Protect the eave from ice dams and sideways rain step one in steep slope roofing is the edge flashing.

Renew flashing seals by chipping out old caulking and mortar along the edges of the flashing.