Snap-Clad

Snap-Clad is a PAC-CLAD standing seam roof panel from Petersen. It is a continuously interlocking, one-piece architectural and structural panel for roofing, mansard and fascia work. It is listed for commercial roofing, and concealed clips allow for thermal movement. Roofing and fascia applications use different clip selections. The recommended minimum slope for most applications is 2:12.

Seam height is 1-3/4 inches. Nominal widths are 10, 12, 16 and 18 inches on center. Panels are smooth as standard, with striations or pencil ribs on request. Factory eave notching is available, and a factory-applied sealant can be specified. Maximum factory-produced panel length is 64 feet.

Metals are 24 gauge steel, 22 gauge steel, .032 aluminum and .040 aluminum, with Galvalume Plus available. Separate guide specifications cover steel, aluminum and copper. Steel is to ASTM A792/A792M (Galvalume) or ASTM A653 (galvanized), aluminum to ASTM B209 and copper to ASTM B370. The guide specifications are split by width as well. One covers the 16, 12 and 10 inch panels and another covers the 18 inch panel with no UL 90.

• UL 580 Class 90 wind uplift: steel panels up to 18 inch on center and aluminum panels up to 16 inch on center.
• UL 1897 wind uplift.
• UL 790 Class A fire-rated panels.
• UL 263 fire-resistance rated panels.
• UL 2218 impact-resistance rated panels.

ASTM tests listed are E1592, E283/1680 and E331/1646. Florida Building and Miami-Dade product approvals are held for Snap-Clad under numbers published by the manufacturer.

The finish warranty is 35 years non-prorated, and a weathertightness warranty is available. The guide specifications word the finish warranty as 30 years from substantial completion, covering fading beyond 5 Hunter units under ASTM D2244, chalking beyond a No. 8 rating under ASTM D4214, and cracking, checking, peeling or loss of adhesion, and word the weathertightness warranty as 20 years. The finish is Kynar 500 or Hylar 5000 fluorocarbon to AAMA 621.

A 40 mil minimum smooth, high-temperature peel and stick membrane is specified, with Carlisle WIP 300 HT as basis of design. It laps 12 inches over hips and ridges and 6 inches over the metal of valleys and built-in gutters, as required for the 20 year weathertightness warranty.

The concealed-fastener clip system accommodates thermal expansion and contraction. The standard clip is used for mansard and fascia applications. The high-performance clip is used for roofing applications and UL 90-rated assemblies. In coastal applications, aluminum panels with stainless steel clips are required for warranty coverage.

Substrates are 5/8 in minimum plywood, or nailboard insulation or equivalent, with ice and water shield applied horizontally from eave to ridge, or metal decking or rigid insulation with bearing plates. Minimum length is 4 ft, and the Annapolis Junction, Maryland facility minimum is 60 in. Factory-produced lengths reach 64 ft. Panels are produced in continuous lengths and leveled for flatness.

• ASTM E1592 test reports: .032 by 12 and .040 by 12
• ASTM 1680 and 1646 test report
• UL 1897 test reports: .032 by 16, .040 by 16 and 24 gauge by 16
• UL listings: 254, 255, 261, 263, 303, 343, 508, 508A, 614 and 790, plus a UL clip spacing table
• ICC-ES Evaluation Reports ESL-1320 and ESR-4173
• Florida roofing HVHZ approval
• Miami-Dade Notice of Acceptance
• Texas Department of Insurance approvals: .032 and .040 on plywood deck, 22 gauge on steel deck, 24 gauge on plywood deck
• Allowable live load and uplift tables for 24 and 22 gauge

Snap-Clad trim uses PAC-CLAD aluminum from .032 to .063 or PAC-CLAD steel in 24 or 22 gauge. Colors are Kynar-based 70% PVDF coatings in standard, metallic and cool ranges.

Snap-Clad detail drawings cover curb, eave, expansion joint, gable, gutter, headwall, hip and ridge, panel end, peak, pipe penetration, rakewall, slope change, valley and Z-closure for metal deck and wood substrates.

• Related products: H-Shield, H-Shield CG, H-Shield HD, H-Shield HD Composite CG, H-Shield NB