In addition to their durability and energy-efficient properties, metal roofing panels also offer significant architectural advantages.
A high slope metal roof is defined as a roof with a pitch greater than 3/12, while a low slope metal roof has a pitch of less than 3/12. Both have architectural benefits worth considering.
A high slope metal roof allows for quicker run-off of water and snow, which reduces potential build up and strain on the building’s structure.
On average, both high slope and low slope metal roofs can weigh between 40 to 135 pounds per 100 square feet, which is very lightweight and adds less structural demands than other heavier roofing materials. This is especially worth noting in areas where earthquakes are a concern.
Both low slope and high slope metal roofs, whether standing seam or exposed fastener, meet the requirements of:
- ASTM E1592 – Standard test method for structural performance of sheet metal roof and siding systems by uniform static air pressure difference, as per ASTM International.
- UL 580 - Tests for uplift resistance of roof assemblies, as per UL.
- UL 1897 - Uplift tests for roof covering systems, as per UL.
Because of the Cool Chemistry properties and EnergyStar rating of Weathertite’s warranted panels as well as the environmental benefits and recycled materials, metal roofing can add points to a building’s LEED certification. (Source: The Metal Initiative)