What Is a Drip Edge on a Roof?
Drip Edge Placement
A drip edge is a strip of material that’s placed on the edge of the roof underneath the asphalt shingles to help water filter off the roof and to the rain gutters. It’s made of a non-corroding and non-staining material, like different types of metal. The drip edge should be placed right between the sheathing and fascia board. This creates a drainage gap between the fascia board and the drip edge, which drastically improves water flow to the rain gutters so that the roof is protected from water damage, which often occurs as a result of poor drainage.
Purpose of Drip Edge
The first main purpose of a drip edge is to keep water away from the fascia. There are numerous forces that cause water droplets to stick to each other and the surface they’re on. The drip edge uses these forces and gravity to pull the water into the rain gutter. Without a drip edge, the water will stick to the shingles, which means moisture will eventually work its way beneath the shingles and leak into your home. Or the water may adhere to the fascia, which could cause rot and leaks. The second purpose of the drip edge is to protect the roof from rain during a storm with high winds. High winds combined with rain can cause the water to be pushed around on the roof, so when conditions are severe enough, the water can be pushed through the layers onto the roof’s deck. A drip edge with a proper hang and flange can help combat these forces that would encourage the water to move up the roof instead of down.
Types of Drip Edge
Drip edges are made of either plastic or metals that are galvanized or corrosion-resistant. Aluminum is a popular option and can be manufactured in colors that match the rest of the home. Galvanized steel is a stronger option than aluminum, and if it’s at least 24-gauge, it can withstand high winds. Copper is another option that can be used for functional and aesthetic purposes. In addition to different material options, there are different profile types to consider. Type-C edges are a class L-shaped style with a 90-degree bend. Type D profiles are shaped like a “T” and are beneficial because they keep water further away from the fascia. Type F edges have a longer leading edge that may be installed over existing shingles.
Why It’s Important
Drip edges are important because they help protect your roof from a host of potential dangers. They deter insects and other small pests by protecting the space between the fascia board and deck. They protect the shingles and fascia by removing water to the gutters and away from the roof as well as foundation. The protection offered by drip edges helps extend the life of your roof overall. For a roofing estimate in Buckhead that includes drip edge installation, contact Superior Roofing Company of Georgia today.