Revision context
Document record
The file is a three-part guide specification for PAC T-250, a pre-finished, pre-fabricated architectural standing seam roof system from Petersen Aluminum Corporation. It is dated August 2024 and is written as Section 07410, Preformed Metal Standing Seam Roofing. The section includes factory formed standing seam metal roof panels and the related work it names, including structural steel, steel joists and sheet metal flashing. Referenced standards include ASTM B209 for aluminum, ASTM A792 for aluminum-zinc coated steel, SMACNA, AISI and the Aluminum Association design manual.
System description gives material of ASTM A792 55 percent aluminum-zinc steel at 24 or 22 gauge, or ASTM B209 aluminum at .032 or .040 inch. Performance entries cover water penetration under ASTM E283 and E331, a UL Class 90 wind uplift under UL 580, ASTM E1592, UL 2218 impact resistance and ASTM E2140. Warranties are a weathertight warranty of 20 years from substantial completion and a finish warranty of 30 years, with color fading limits under ASTM D2244 and chalking limits under ASTM D4214. The applicator warranty is two years. Submission and LEED entries are listed for SRI and recycled content.
Material changes / notes
Official file linked from the current catalogue. No local archive copy is retained. Publication date and revision have not been verified.