Design-Lok

Design-Lok is a PAC-CLAD exterior wall insulated metal panel with Heavy Stucco Embossment (HSE) on its face. The texture gives a facade that resembles tilt-up concrete.

The panel is lighter than tilt-up concrete and is built as a metal skin and polyisocyanurate foam core sandwich.

• Panel use: exterior wall.
• Coverage width: 42 inches.
• Thickness: 2, 2.5, 3 and 4 inches.
• Panels are cut from 8 feet 0 inches to 40 feet 0 inches in length.
• Exterior gauge: 26 or 24. Interior gauge: 26.
• Nominal R-value: R-8 per inch of thickness.

The exterior skin is Galvalume or G90 galvanized steel with a siliconized polyester or low-gloss PVDF finish and a heavy embossed texture.

The interior skin is Galvalume, G90 galvanized steel or stainless steel. Interior finishes are polyester, siliconized polyester and plastisol (PVC), with an embossed or smooth texture.

The core is polyisocyanurate foam, poured in place in one continuous pass. The panels join with an offset double tongue-and-groove joint trade-named Green-Lock.

The panel measures 0.139 Btu-in/hr-ft2-F at a 75 F mean temperature and 0.129 at 35 F in ASTM C518 testing, which corresponds to R-7.20 and R-7.75. Air leakage is 0.0011 cfm/sf at 20 psf. Zero water penetration is recorded at 20 psf.

ASTM E84 gives flame spread under 25 and smoke developed under 450. NFPA 285 is recorded as passed and FM 4880 as Class 1 fire rated. FM 4881 Class 1 exterior wall system approval applies, and the guide specification adds very severe hail resistance to that standard.

The Miami Dade County NOA is No. 20-1202.02. The Florida Product Approval is 16327.1 R3 and the Texas Department of Insurance Evaluation ID is EC-103.

In the group guide specification the manufacturer warrants panels against defects in material and workmanship for two years from production, the Galvalume substrate for 20 years and the Kynar 500 coating system for 25 years, each under its own limited warranty terms.

Tube sealants are non-skinning polyurethane and tape sealant is butyl. Trims and flashings match the adjacent panels in material gauge and finish. Closures resist ultraviolet light.

The bond between metal facers and foam passed fatigue, freeze/heat, humidity and autoclave tests. The humidity test ran 1,200 hours at 93% humidity and 158 F, and the autoclave test ran 2-1/2 hours at 218 F and 2 psig.

Design-Lok is an exterior wall panel with a heavy embossed exterior texture and a 42 inch coverage width. Lengths run from 8 feet 0 inches to 40 feet 0 inches, with 26 or 24 gauge exterior skins and 26 gauge interior skins.

• Design-Lok wall uniform load table, with separate load tables for the BAC-08 and BAC-12 wall clips.
• Design-Lok partition span table.
• FM 4880, FM 4881, FM 4881 BAC-08 and FM 4881 Back Fastened approvals.
• Bulletins on air and water infiltration, flame spread, K-factor, NFPA 285, weights and R-values.

Design-Lok details come in open-framing sets, horizontal and vertical, for door header, door jamb, corners, side joint, sill and window header, jamb and sill. A stack joint detail appears in the vertical set.

Design-Lok is the tilt-up concrete look among seven profiles in the range. Textures across the range are smooth, embossed and heavy stucco, and Design-Lok uses the heavy stucco one. Carlisle Corporation owns the Petersen and PAC-CLAD brands.