How far should flashing go under shingles?

How far should flashing go under shingles?

There are many different opinions on this matter. Some say that flashing should not go under existing shingles at all.

Others say it should be installed only where there is no other way to reach the light fixture or appliance. Still others say that flashing should be installed wherever it makes sense given the location of the light fixture or appliance being flashed.

What do you think? Is flashing under existing shingles acceptable? Do you agree with any of these opinions? Let us know your thoughts in the comments section below!

The following pictures show two different types of flashing under existing shingles. The first picture shows a standard step flashing installation.

The second picture shows a step flashing installation using a metal strip instead of nails.

Standard Step Flashings Under Existing Shingles

Step flashing is a very common type of roof flashing. These steps are usually made out of wood or metal strips that extend from the top edge of the shingle to the bottom edge of the shingle.

A typical step consists of four pieces: one piece at each corner, one piece at each side, and one piece at both sides. Both of these steps flash the same color.

Standard Step Flashings Under Existing Shingles

Metal Striped Step Flashings Under Existing Shingles

If you have questions about flashing under existing shingles, please feel free to contact our experts at 1-800-878-7669.

The pictures above show step flashings under existing shingles. Both types of step flashings are acceptable choices when it comes to flashing under existing shingles.

how far should flashing go under shingles -

The one on the right is preferred by many people, as the nails are less exposed in the long run.

What do you think about step flashing installation methods shown above? Do you think they are good choices for flashing under existing shingles? Let us know in the comments section below! Our friendly and knowledgeable staff are available to answer your questions and address any concerns you may have.

The following pictures depict step flashings with metal strips. These strip flashings come in many different widths and lengths.

The heavier types can be very expensive, but they also last much longer.

Strip Flashings Under Existing Shingles

Flashing Under Roof Edge

In some cases flashing under roof edge is important for keeping water from leaking into your home. When your roof meets a wall there is often a gap between the roof and the wall.

Please feel free to either contact us by phone or visit our contact page.

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