The answer to 'what causes architectural shingles' is that architectural shingles, also known as dimensional or laminate shingles, are a type of asphalt roofing material that is designed to have a thicker, more dimensional appearance compared to traditional 3-tab shingles. Architectural shingles are made by laminating or adhering multiple layers of asphalt-based material together, creating a shingle with more depth and texture.
The layered construction of architectural shingles gives them a unique, high-end look that is popular for many residential roofing projects. This design also provides enhanced durability and wind resistance compared to 3-tab shingles. Architectural shingles are a common choice for homeowners looking to upgrade the appearance and performance of their roof.