Understanding Why Shingles Cup and Curl

Shingles may be a popular choice when it comes to roofing materials, but that doesn’t mean they don’t have their problems. For example, they are notorious for cupping and curling. This is easily one of the most common problems with this type of roofing, and it can be very frustrating for homeowners who don’t understand why it’s happening. Are they doing something wrong? Is there a way to prevent this from being an issue? In this blog post, we will discuss the reasons why shingles cup and curl and what you can do to prevent it.

Why Do Shingles Cup and Curl?

To understand why shingles cup and curl, we first need to understand a little bit about how they are made. Shingles are made from a variety of materials, including asphalt, fibreglass, and organic matting. These materials are then combined with other ingredients to create a finished product. The fibreglass reinforcement helps to add strength and durability to the shingle, while the asphalt acts as a waterproofing agent. The organic matting helps to give the shingle its shape and texture.

So, why do shingles cup and curl? There are a few reasons, but the most common is due to the asphalt. Asphalt is a petroleum-based product, and it can be prone to shrinking and hardening in certain conditions. When this happens, it puts stress on the fibreglass reinforcement, which can cause the shingle to cup and curl. This is more likely to happen in hot and sunny conditions, as the heat causes the asphalt to expand and contract.

There are a few other reasons why shingles cup and curl, but they are less common. For example, if the shingles are not properly ventilated, they can trap heat and moisture, which can also cause cupping and curling. Improper installation can also cause this problem, as shingles that are not installed correctly can be more likely to cup and curl.

What Can You Do to Prevent Shingles from Cupping and Curling?

There are a few things you can do to prevent your shingles from cupping and curling. First, make sure they are properly ventilated. This will help to prevent heat and moisture from getting trapped under the shingles. Second, make sure they are installed correctly. This means following the manufacturer’s instructions and using the proper tools and techniques. Finally, if you live in an area with hot and sunny weather, try to keep your shingles out of direct sunlight. This will help to prevent the asphalt from expanding and contracting.

The Bottom Line

Shingles cup and curl for a variety of reasons, but the most common is due to the asphalt. If you want to prevent this from happening, make sure your shingles are properly ventilated and installed. You should also try to keep them out of direct sunlight if you live in an area with hot and sunny weather.

If your shingles are already cupping and curling everywhere, then the best thing you can do  is replace them. This can be a big job, so you may want to hire a professional roofer to do it for you. That way, you can be sure it’s done correctly and your new shingles will last for many years to come. Thanks for reading!

Looking for a professional roofer to replace your shingles? Click here to contact Ainger Roofing today for a free estimate!