Most people are pretty sure that asphalt shingles are not made entirely from asphalt or it would look like a roadway. But they have no idea what else is used to make this popular and versatile roofing surface. Typically, these shingles are a combination of a few materials, each providing its own benefits to create the winning combination you see on most roofs in your community. The flexible black part of the shingle is a layer of asphalt, much like is used to build roadways. You know that if the surface can hold up to countless vehicles driving on it, asphalt is durable and somewhat flexible, which is also helpful in preventing cracking and shattering as the single heats and cools when exposed to the sun. The tiny bits of pebbles on the surface of the shingle are aggregates like crushed rock, gravel, and sand. They provide even more durability and protection for the asphalt. Think of it as an exoskeleton that keeps hazards like hail from damaging the shingles and can provide interest and color to the roof’s surface. There is also a binder that holds the aggregates to the asphalt. In addition to these visible features, a fiberglass mat adds strength to the shingle while still allowing it to be flexible enough to form to the curves of a roof or the peak of a roof. Finally, the shingles get a heat-activated sealant to bond them together during installation. This bond is essential in keeping the shingles flat and connected to the roof during high winds and storms.