The answer to 'what causes architectural shingles' is that architectural shingles, also known as dimensional or laminate shingles, are a type of asphalt roofing that is designed to have a thicker, more textured appearance compared to traditional 3-tab shingles. This is achieved through a multi-layer construction process where an additional layer of asphalt-coated material is laminated to the back of the shingle, creating a thicker, more dimensional look.
The extra layer of material also provides additional durability and wind resistance, making architectural shingles a popular choice for homeowners looking to upgrade their roof's appearance and performance. They come in a variety of styles, colors, and textures to complement different home designs.