Which roofing type is known for its difficulty in installation compared to conventional systems?

Built-up roofing is recognized for its complexity during installation when compared to conventional roofing systems. This type of roofing is made up of multiple layers of bitumen and surfacing materials that are applied in layers to create a waterproof membrane. The installation process requires careful attention to detail and a significant amount of labor to ensure that each layer adheres properly and protects against water intrusion.

The application technique often involves heating materials, which adds to the difficulty and requires skilled labor to handle safely. Additionally, the need for proper ventilation and drainage to prevent pooling water further complicates the installation process. The overall weight and thickness of built-up roofing systems also require adequate structural support, which must be considered during installation.

In contrast, roofing types like asphalt shingles, wood shakes, and tile roofing have more straightforward installation processes, often involving simpler layering techniques and fewer materials that may require specialized skills. This makes built-up roofing notably distinct in terms of installation challenges, solidifying its reputation as a more complex roofing choice.