In a roofing system, small components tend to get overlooked, yet they are essential to its long-term performance. One such component is the drip edge. In today’s post, local roofer Chase Roofing LLC takes a look at its role in a roofing system, and what makes it an important component.
What Does the Drip Edge Do?
The drip edge is a type of flashing that’s installed just under the roof’s starter strip, or the first row of shingles. The purpose of flashing is to protect vulnerable areas from water infiltration, which is why you’re bound to find it in areas like valleys, vent pipes and — in the case of drip edges — at the roof’s edge. Rainwater runoff can make its way under the roof through capillary action. What drip edges do is block the runoff and allow gravity to pull the moisture towards the gutters.
Without drip edges, the roof would be more vulnerable to moisture damage. Once moisture makes its way into the roof deck, it can cause rot and contribute to mold growth. These parts are not readily visible, which means moisture damage can get worse over time, sight unseen.
Materials and Profiles
As with other types of flashing, drip edges can be made from a variety of materials, from budget-friendly options like galvanized steel to corrosion-resistant ones like copper or aluminum. Your roofing contractor should be able to discuss the pros and cons of each as you make your selection.
It’s also important to note that there are four main drip edge profiles.
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L-Type. This is the most common profile, and also the simplest — it’s shaped like an inverted letter L. The horizontal flange is inserted between the decking and the starter strip, while the vertical flange covers the fascia board.
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T-Type. As the name suggests, T-type drip edges are shaped like the letter T. The extended horizontal flange further slows down capillary action, improving protection against moisture ingress.
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F-Type. Also known as a gutter apron, F-type drip edges feature an extended flange, giving it an almost C-shaped profile. It’s ideal for protection against wind-driven rain.
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Z-Type. Its Z-shaped profile extends the vertical flange outwards (as opposed to the F-type’s inward flange), making it ideal for steep-sloped roofs, or for roofs in areas that experience heavy rainfall.
A capable roofing and gutter repair installation contractor like Chase Roofing LLC can help you determine the right kind of drip edge for your roof. Give us a call at (757) 206-1948, or fill out our contact form to schedule a free, no-obligation quote. We serve Williamsburg, VA, and the surrounding communities.
