Shingle Curling vs. Cupping: Understanding the Differences and Their Causes

If you're a homeowner, especially here in Warner Robins, GA, you might be familiar with shingle trouble that tends to pop up as time passes—two big culprits are curling and cupping. They might sound alike, but they show up, have different causes, and need different fixes. Let's explore the differences between these two roofing issues, their underlying causes, and practical strategies for prevention and treatment.

What's Shingle Curling?

The thing with shingle curling is it's just as it sounds: your shingles' edges begin to rise or curl up. It causes a wavy appearance on your roof, and you can often see this right from your yard. To spot shingle curling, check out these signs:

• Raised edges that don't sit flat against the roof.
• A concave shape that makes the center of the shingle appear flat while the edges curl.
• An uneven surface that makes your roof look bumpy.

Curled shingles usually result from age and weathering, poor attic ventilation, or even improper installation. If you don't pay attention to them, they can make openings for water to get through, mess with your roof's insulation, and leave your roof weak against strong winds.

What's the Deal with Shingle Cupping?

Shingle cupping is a bit different. Instead of edges lifting, the center of the shingle sinks, making it look like a shallow bowl. Here's what to look out for:

• A depressed center with edges that might be higher up.
• Shadow effects from the cupping give your roof a textured look.
• Water pooling in the center, especially in severe cases.

Cupping is often due to moisture buildup from inadequate ventilation, manufacturing defects, or poor storage  before installation. And like curling, cupping can seriously impact your roof's ability to shed water and stay weather-tight.

Seeing Problems Soon: Fast Checkup Pointers

Keep an eye on your roof by doing regular visual checks. Look from the ground, use binoculars if needed, and keep an eye out for loose granules or lifted edges. You can also get hands-on by gently pressing down on suspect shingles if you feel comfortable climbing up (safely, of course). However, nothing beats a professional inspection to find early signs of trouble. Roofing pros can detect moisture issues and check if repairs or replacements are necessary.

Keeping Things Solid and Sorting Issues

To keep issues at bay, ensure good airflow in your attic and pick top-notch shingles made for the weather in your area. Doing regular upkeep, like clearing your gutters and cutting down tree limbs that hang too close, can also protect your roof's condition.

Yet, if your shingles start to curl or cup, here's what you could do: