Corr-Lok

Corr-Lok is a PAC-CLAD exterior wall insulated metal panel with a micro-corrugated face. The fine corrugation is a more architectural profile than the broader ribs on other insulated panels.

The side joint is designed to keep a vapor seal in vertical and in horizontal applications.

• Panel use: exterior wall.
• Coverage width: 42 inches.
• Thickness: 2, 2.5, 3 and 4 inches.
• Longest panel is 40 feet 0 inches and the shortest is 8 feet 0 inches.
• Exterior gauge: 24 or 22. Interior gauge: 26.
• Nominal R-value: R-8 per inch of thickness.

Both skins are Galvalume or G90 galvanized steel. Stainless steel is not listed for Corr-Lok.

Exterior finishes are siliconized polyester and low-gloss PVDF. Interior finishes are polyester and siliconized polyester. Textures on both faces are embossed or smooth.

Continuously poured polyisocyanurate foam fills the core. The offset double tongue-and-groove joint is the Green-Lock joint of the guide specification.

• ASTM C518 K-factor: 0.139 at 75 F mean and 0.129 at 35 F mean, in Btu-in/hr-ft2-F.
• ASTM E283 air leakage: 0.0011 cfm/sf at 20 psf.
• ASTM E331 water penetration: zero at 20 psf.
• ASTM E84: flame spread under 25, smoke developed under 450.
• Core shear 16 psi, compression 18 psi, tension 21 psi, density 2.25 pcf.

The panel is NFPA 285 passed, FM 4880 Class 1 fire rated and FM 4881 Class 1 approved as an exterior wall system. Miami Dade County NOA No. 20-1202.02 covers TAS 201 impact testing, and the panel carries Florida Product Approval 16327.1 R3 and Texas Department of Insurance Evaluation ID EC-103.

Flashings and trims match the adjacent panels in gauge and finish. Panels and trim are kept out of direct contact with treated lumber and copper lightning attenuation equipment, and out of the water runoff from HVAC drain lines, to avoid galvanic action between dissimilar metals.

Clips are the 14-gauge 4 inch 5-hole AC-01, the 14-gauge 8 inch 3-hole BAC-08 and the 12-gauge 12 inch 3-hole BAC-12. Fasteners are self-drilling or self-tapping hex head screws of suitable length. Fastener safety factors run from 2.25 for two fasteners into steel to 4.00 for masonry.

No delamination, blistering or permanent set results from twenty-one eight-hour cycles between -20 F and 180 F. Fatigue testing runs 2,000,000 alternating cycles of L/180 deflection.

Corr-Lok is a micro-corrugated exterior wall panel with a 42 inch coverage width. Lengths run from 8 feet 0 inches to 40 feet 0 inches. Exterior skins are 24 or 22 gauge and interior skins are 26 gauge.

• Load data: wall uniform load table plus BAC-08 and BAC-12 clip load tables.
• Partition span table.
• FM documents: FM 4880, FM 4881, FM 4881 BAC-08, FM 4881 Back Fastened.
• Bulletins: air and water infiltration, flame spread and smoke developed, K-factor, NFPA 285, panel weights, R-values.

Corr-Lok drawings are published as open-framing details, horizontal and vertical, covering door header, door jamb, inside corner, outside corner, side joint, sill and window conditions. The vertical set adds a stack joint detail.

Seven profiles make up the range: Corr-Lok is the micro-corrugated one among them. Carlisle Construction Materials includes the PAC-CLAD and Petersen brands. The Corr-Lok sales sheet sits beside an IMP Color Guide, since insulated panels carry their own color set.