Which roofing material is known to be the heaviest per square foot?

Tile slate roofs are recognized as the heaviest roofing material per square foot. This is primarily due to the density and thickness of slate, which is a natural stone that is both durable and heavy. When installed, slate roofs can weigh significantly more than other common roofing materials, such as asphalt shingles, metal roofing, or wood shingles.

The weight of slate provides several advantages, including longevity and resistance to extreme weather conditions, making it a popular choice for high-end residential buildings. Its robustness contributes to its capability to withstand wind, hail, and other environmental challenges, but it also necessitates a strong structural support system underneath to accommodate its weight.

In contrast, asphalt shingles are on the lighter side of roofing materials, making them easier to work with but less durable over time. Metal roofing, while increasingly popular for its durability and resistance to corrosion, typically weighs less per square foot than slate. Wood shingles, while aesthetically pleasing, like asphalt shingles, do not compare in weight to slate roofs. Thus, when it comes to weight per square foot, tile slate roofs are the distinct choice.