PAC-150 90° Seam

The PAC-150 90° Seam is a mechanically seamed standing seam roof panel from PAC-CLAD, the Petersen brand. It belongs to the standing-seam roofing family and is used on commercial roofing in the United States. The panel is held by concealed clips and has a single-lock configuration.

The panel is seamed in the field to 90°. This 90° seam is one of two PAC-150 seam configurations, the other being the 180° seam, which is a double-lock configuration. It is part of the standing seam metal roofing systems used on commercial buildings, such as standing seam metal roof panels.

PAC-150 panels have a seam height of 1-1/2 in. Nominal panel widths are 12 in, 16 in, 18 in and 20 in on center. The widths are nominal.

• Seam height: 1-1/2 in
• Nominal widths: 12 in, 16 in, 18 in or 20 in O.C.
• Listed minimum slope: 1:12
• Maximum panel length: 64 ft when factory or shop-formed

The 90° seam is formed by mechanical seaming in the field. Panels can be factory or shop-formed, or field-formed, and field-formed lengths are virtually unlimited.

The panel is available in four pan variations. The smooth pan is the standard. Striated, pencil rib and flat rib pans are optional. Each variation keeps the 1-1/2 in height and the same four nominal widths.

Panels formed in the factory or shop run to a maximum of 64 ft, and the minimum length is approximately 4 ft. Field-formed lengths are virtually unlimited.

Panels can be curved in the field or at the factory, depending on radius and panel length. The minimum curve radius is 20 ft.

PAC-150 is formed from 24 gauge steel or .032 aluminum. Galvalume Plus is available as a steel option.

• 24 gauge steel
• .032 aluminum
• Galvalume Plus steel available

Seamers for the PAC-150 90° Seam are not available from Petersen. This differs from the 180° configuration, whose seamers are sold through a dedicated PAC-CLAD seamer site.

The PAC-150 spec sheet carries three classifications under the heading UL Classification.

• UL-580
• UL-1897
• TAS-125

Florida Building Product Approvals for PAC-150 are handled through the Acworth, Georgia facility.

A 35-year non-prorated finish warranty applies to the product. A weathertightness warranty is also available.

Colors are Kynar-based 70% PVDF coatings. The PAC-CLAD color guide groups colors into standard, metallic and cool ranges.

The panel is produced only at the Georgia, Maryland and Arizona facilities of Petersen. The facilities are in Acworth, Georgia, in Baltimore, Maryland, and in Phoenix, Arizona.

The 90° seam is closed with a mechanical seamer in the field.

Mechanical seamers are required. On slopes greater than 6:12, seamer slippage can scratch the finish, and the scratches may void the warranty. D.I. Roof Seamers is the only supplier of seaming equipment approved by Petersen, and it also supplies hand crimpers and other tools.

• FBC Approval 16942 R1 (2014 Code)
• UL 90 Construction No. 603 (.032 aluminum)
• UL 90 Construction No. 588 (24 gauge steel)
• Test listings for .032 aluminum and 24 gauge steel over plywood deck
• Load tables n0374.03-450-18-r0 (.032 aluminum) and n0374.04-450-18-r0 (24 gauge)
• Florida HVHZ roofing approval
• Miami-Dade Notices of Acceptance
• UL Fire Directory listing
• Design pressure chart: PAC-150 MDP chart

Detail drawings are published in PDF and CAD formats for metal deck (ISO) and wood substrates. Subjects include curb, eave, expansion joint, gable, gutter, headwall, hip and ridge, panel end, peak, pipe penetration, rakewall, slope change, membrane transition, valley, valleywall and Z-closure details. Vented ridge details with Corr-a-Vent are for wood substrates only.

A 3-part specification and a DOCX specification for the 24 gauge by 12 market version exist.