The answer to 'what causes asphalt shingles' is that asphalt shingles are a popular roofing material made from a combination of asphalt, fiberglass or organic materials, and granules. Asphalt shingles are created by coating a base material, usually fiberglass or organic felt, with asphalt and then adding colored mineral granules to the surface. The asphalt provides waterproofing and the granules protect the asphalt from UV damage and wear.
Asphalt shingles are a common choice for residential roofs because they are affordable, durable, and easy to install. They come in a variety of colors and styles to complement the exterior of a home. Proper installation and maintenance are important to ensure the longevity of asphalt shingles and prevent issues like leaks or premature aging.