R-36 Panel

The R-36 Panel is an exposed-fastener ribbed metal panel made by PAC-CLAD | Petersen. It belongs to the exposed-fastener range with the 7.2, M-36, M-42 and corrugated panels. The range is used for roofs, walls and linear panels, and the R-36 is among the panels in that range specified as exposed-fastener metal roof panels. It is a lappable, structural ribbed panel that is fastened directly to the substrate and has an overlapping sidelap.

The R-36 Panel is 36 inches wide (nominal) and 1-1/4 inches high. Its ribs are spaced 12 inches on center, and the installed coverage is 36 inches for both roof and wall use.

• Width: 36 in. nominal
• Rib height: 1-1/4 in.
• Rib spacing: 12 in. on center
• Installed coverage: 36 in.

Panels are roll formed on a stationary mill by the continuous end rolling method, with no end laps. Precut short lengths start at 5 feet. Panel lengths reach 30 feet in steel and 22 feet in aluminum.

R-36 panels are made in 24 gauge steel, 22 gauge steel, .032 aluminum, .040 aluminum and .050 aluminum. Galvalume Plus is available. Steel conforms to ASTM A792 (55 percent aluminum-zinc alloy coated), and aluminum to ASTM B209.

The finish is a Kynar 500 or Hylar 5000 fluorocarbon coating, with a topside film of 0.70 to 0.90 mil over a 0.25 to 0.3 mil prime coat for a total dry film thickness of 0.95 to 1.25 mil, meeting AAMA 621. The underside carries a 0.25 mil primer. The panel texture is smooth. A 35-year non-prorated finish warranty applies to the panel.

Matching screws and rivets are supplied with the panel. Closure strips are available and are pre-molded polyethylene closures that match the panel profile. Trim matches the panel material and finish, is press-broken in lengths of 10 to 12 feet, and has factory-welded miters.

Fasteners use combination steel and EPDM washers. Screws into girts or purlins penetrate the supporting member by 1 inch. Flashing and sidelap screws are #14 HHA x 3/4 inch sheet metal stitch screws spaced 12 inches on center. Flashing is formed in .032 to .063 aluminum or in 24 or 22 gauge steel.

• Load tables: R-36 panel with spray foam (stamped).
• Load tables, Tyler only: .032 aluminum.
• Load tables, Tyler only: 24 gauge steel.
• Florida Building Product Approvals: roofing (non-HVHZ) and siding.
• Test references listed: ASTM E1680, E1646, E1592 (at .032, .040, 22 gauge and 24 gauge) and E331/E283.

Z-girt details are published as horizontal and vertical PDF drawings, each with 11 details: installation, inside corner, jamb, outside corner, sill, top of wall, top-of-wall tie-in, wall-to-soffit, window head, window jamb and window sill. CAD versions cover the same set, and a BIM object for the R-36 panel is published. The panel is also part of the manufacturer's LEED certified building points and recycle statement documents.

Hurricane Harbor Water Park is the project case study shown on the product page.

A perforated exposed-fastener guide specification covers the R-36 in .032, .040 and .050 aluminum, painted on one side. Hole patterns include 1/8 inch round holes on .324 inch staggered centers (13.5 percent open area), 1/4 inch holes on 1/2 inch centers (23 percent), 1/8 inch holes on 1/4 inch centers (23 percent), 1/8 inch holes on 7/32 inch centers (30 percent), 3/16 inch holes on 5/16 inch centers (33 percent), 1/4 inch holes on 3/8 inch centers (40 percent) and 3/8 inch holes on 9/16 inch centers (40 percent). Perforated panels carry a 20-year finish warranty period and a longer lead time.