You probably have asphalt shingles on your home right now. They’re a popular option when it comes to roofing materials. In fact, approximately 75 to 80% of the houses in North America have asphalt shingles. Even though they are common, there are many fun facts about them that few people know.
They Aren’t Completely Made of Asphalt
Many people are surprised to learn that asphalt only comprises about 20% of the weight of asphalt shingles. They’re mostly made of composition materials. The core is made from organic felt or a fiberglass mat. This core is then coated with asphalt, which is covered in crushed mineral granules.
The Granules Aren’t Just for Color
That beautiful and colorful crushed stone that you see isn’t just for aesthetics. These mineral granules serve many important purposes. First of all, they provide UV protection. Those granules protect the underlying asphalt against sun damage and oxidation. Without them, the shingles would quickly become brittle.
The granules also make the shingles fire-resistant. As a result, asphalt shingles have a Class A fire rating, which is the highest safety rating available. Some of the modern granules include copper and zinc. This prevents blue-green algae growth, which is what causes unattractive black streaks on older roofs.
Asphalt Shingles Were Invented in Michigan
Henry Reynolds invented the first asphalt shingles in 1903. He lived in Michigan. Before this, roofers were using rolls of fabric that they coated in pine or coal tar. It was way less durable and quite messy.
Asphalt Shingles Can Be Recycled Into Roads
Asphalt shingles are one of this country’s most recycled materials. This is because they have the same base material as the pavement used for roads. Old shingles can be ground up to become an additive for hot-mix asphalt. They can also be used to fill potholes.
Asphalt Shingles Self-Seal
There’s more than nails holding down your asphalt shingles. They glue them together. They have a heat-activated adhesive strip on their underside. After installation, the sun’s heat melts this adhesive. It’s what binds the shingles together, which creates a water-tight and wind-resistant seal. High-end architectural asphalt shingles can actually withstand up to 130 MPH winds.
These fun facts are not only interesting, but they also help you understand the popularity of asphalt shingles. They’re an affordable and durable roofing material. Best of all, you don’t have to sacrifice aesthetics for this reliability. They’re available in a wide range of colors and styles. If you live in St. Santa Barbara, CA or a surrounding area and need asphalt shingle roof services, make your first call to Action Roofing.