Roof Flashing - 5 Types Explained

There are several things to consider before you begin flashing your roof.

You will want to be familiar with flashing material options so you can choose the best type for your home.

The material you use for the flashing will have a significant impact on the performance of the flashing. If you are unsure about the material to choose, you can ask advice from a roofing expert.

Continuous Flashing

Continuous roof flashing is a long piece of metal that is designed to carry water to the shingles below. This is a vital element of the roofing system that is typically installed under the shingles on the eaves and along the rakes. The purpose of this flashing is to prevent water from getting underneath the roof and causing damage to the structure.

While continuous roof flashing is simple, it can have some drawbacks. For example, some flashing materials can be corroded, break or warp. Changing weather conditions can exacerbate these problems. The flashing can also be susceptible to leaks, so periodic inspections should be performed to ensure it is properly sealed.

Continuous roof flashing may not be suitable for every home. In some cases, it is better to opt for step flashing.

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Step Flashing

Step flashing is an important part of any roofing system. This material redirects water away from critical areas of the roof, which can lead to structural failure. The best material for step flashing is aluminum or galvanized steel, though plastic and rubber may also be used.

To install step flashing, you will need a straight edge, a hammer, a pair of work gloves, and galvanized siding nails. You can also purchase pre-bent flashing pieces.

First, cut a piece of flashing about ten inches long. Normally, this is large enough to cover typical shingles. If your shingle is higher than the flashing, you may need to bend the flashing at an angle.

Next, you’ll need a flatbar. A flatbar helps to hold the flashing in place. After cutting the piece to length, you’ll need to nail it into place.

Base Flashing

Base flashing is a piece of flashing that directs water away from critical areas of the roof. It can be made of a variety of materials, and there are several different techniques for installing it.

The National Roofing Contractors Association recommends a minimum base flashing height of eight inches. However, adding insulation to the roof may make this requirement less clear-cut.

This component of the roof is important for several reasons. One is that it helps to keep moisture out of the home, as well as protect the structural integrity of the roof. Another is that it can prevent leaks. A good base flashing is made of a material that can withstand constant expansion and contraction.#nbsp;

There are three primary flashing methods. In addition to a traditional roof membrane, there is also a continuous flashing or apron flashing.


Counterflashing is an important part of a roof’s protection. It keeps water from leaking into the house and causing damage. While this technique is commonly used in brick chimneys, it can also be installed in a few other situations.

Counter flashing is often installed in the mortar joints that hold the brick together. If the mortar is not properly sealed, a leak could occur. To prevent this, a layer of counter flashing should be placed between the brick and the vertical flange of the wall. This layer should extend at least two inches beyond the base flashing.

Another key point about installing counter flashing is that it should be a second layer of protection. A single piece of flashing can lead to water entering behind the vertical flange, which can cause a problem.

Drip Edge Flashing

Drip edge roof flashing is a piece of metal or plastic that is installed along the edge of your roof. This prevents rainwater from running down your roof and causing damage. It also helps prevent water from getting into your fascia board and rotting the fascia.

Installing a drip edge is a smart idea for most homes. However, it is important to install it correctly. A poorly installed drip edge can cause costly problems.

Using a drip edge will keep water from damaging your fascia board and rotting your shingles. It will also help keep pests out of your attic.

Drip edges come in several assorted styles. One common type is the L-shaped flashing. The L-shaped drip edge is often used on low-slope roofs.

For more information about roof flashing, roof repairs, roof inspections, or new roofing, call our knowledgeable and friendly roofing experts at Marzo Roofing in Port Saint Lucie or West Palm Beach Florida.