What Are Roof Shingles Made of & How Do They Work?

August 14, 2024

Roof shingles are one of the most common roofing materials used in residential construction, but have you ever wondered what they’re made of and how they protect your home? Understanding the composition and functionality of roof shingles can help you make informed decisions when it comes to maintaining, repairing, or replacing your roof. Keeping scrolling to learn the breakdown of the materials used in shingles, how they’re constructed, and how they function to keep your home safe from the elements.

The Basics: What Are Roof Shingles Made Of?

Roof shingles are typically made from a variety of materials, each offering its own benefits in terms of durability, cost, and appearance. The most common type of shingles is asphalt shingles, which are made from a base mat of either fiberglass or organic materials, coated with asphalt, and topped with mineral granules. These granules not only provide color and texture but also protect the shingles from UV rays and improve fire resistance.


There are other types of shingles as well, including wood, metal, and slate. Wood shingles, often made from cedar, offer a natural look but require more maintenance. Metal shingles, made from materials like steel or aluminum, are durable and can mimic the appearance of other types of shingles. Slate shingles are known for their longevity and classic appearance, though they are heavier and more expensive.

How Do Roof Shingles Work?

Roof shingles are installed in overlapping rows, starting from the bottom edge of the roof and working upwards. This overlapping pattern is crucial to their function, as it helps to create a barrier that sheds water away from the roof and prevents leaks. The granules on the surface of asphalt shingles also play an essential role in weather protection by reflecting UV rays, which helps to prolong the life of the shingles.


In addition to shedding water, shingles help to insulate your home by providing an extra layer of protection against heat and cold. They also offer wind resistance, with many shingles rated to withstand high winds, which is particularly important in storm-prone areas.

Maintenance and Longevity

The lifespan of roof shingles varies depending on the material. Asphalt shingles typically last 20-30 years, while metal and slate can last much longer. Regular maintenance, such as cleaning gutters and removing debris from the roof, can help extend the life of your shingles. It’s also important to inspect your roof periodically for signs of wear, such as curling or missing shingles, and address any issues promptly.

The Importance of Knowing Your Shingles

Understanding what roof shingles are made of and how they work can help you appreciate the crucial role they play in protecting your home. Whether you’re considering a new roof or just want to keep your current one in top shape, knowing the ins and outs of shingles is key to making informed decisions and ensuring your home stays safe and secure.

Get Shingle-Savvy with Bartlett Contracting, LLC

Ready to make sure your roof is in peak condition? Whether you're looking to upgrade your shingles or just need expert advice on maintenance, Bartlett Contracting, LLC has got you covered. Our team of professionals can help you choose the right materials and ensure your roof stays strong and secure for years to come. Contact us today for a consultation and let’s keep your home protected from the top down!

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