What Is Roof Flashing?

October 3rd, 2016
Dormer Window Flashing

Everyone has a roof on their home, and it’s essential that your roof keeps you protected from the elements of the weather. One major component that helps your roof to do its job is flashing.

What Is Flashing?

Roof flashing helps prevent water from getting beneath a roof around openings. Flashing is usually used where two sections of roof meet, such as at a corner, or where deck roofs attach to the house or around any feature in the roof structure, such as along chimneys or skylights.

You might be thinking to yourself that all of this sounds good, or you might be asking what’s the point? Well, if you don’t have flashing, water can seep in around these areas, eventually leading to moisture damage, insulation degradation, and even mold or mildew issues. Properly installed roof flashing keeps these problems at bay, directing water away from the home.

Where Should Roofing Be Installed?

So now that you know about the potential problems, let’s discuss where and what you can use to install flashing. Here are four common areas where roof flashing should be installed:

Dormer Window FlashingAround Dormer Windows

Around dormer windows, metal flashing is often most common material for dormer windows is metal flashing. Metal flashing is generally installed where the roof of the dormer meets the rest of the roof, as well as along the edges that run around the dormer.

Around Skylights

Flashing around skylights is typically one big continuous piece. Skylights are usually raised up using a large wooden curb which allows you the room you need to install flashing. Some skylights are manufactured with flashing, but often it’s best to install additional flashing to provide extra moisture protection.

Around Roof Vents

Most of the time when you install a hood or pipe vent, you are carving a hole in the structure, which also means that flashing needs to be installed around this new fixture. Whether a roof vent, pipe vent or hood exhaust, adding flashing around the pipe allows the vent to send air up while keeping moisture out.

Around the Chimney

Similar to roof vents, chimneys also leave a gap around a roof edge. Installing metal or PVC-based strips of flashing can cover the area between the roof and the chimney, keeping the rainwater or snow melt where it belongs – outside.

If you have problems with leaks, a flashing issue could be to blame. To learn more or to request an estimate for repairs or reinstallation of flashing at your home, call Roofing by Bruce today at 570-424-7250.

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