Fire performance isn't just the core; brace alloys, screw grades, and coating systems all affect ratings

https://telegra.ph/Roofing-Vent-Durability-Copper-Elements-That-Outlive-the-Building-Ordinance-Cycle-05-20

Fire efficiency isn't simply the core; brace alloys, screw grades, and finish systems all affect ratings, so settings up are checked together for real-world conformity.