Mesa (DM40/DM40 with InnovaCELL™ Technology)

Mesa DM40 is an insulated metal wall panel from All Weather Insulated Panels (AWIP), also offered as DM40 with InnovaCELL Technology. AWIP names it its most popular panel, with sculpted depth and clean lines. It is the 40-inch member of the Mesa line next to the 44-inch DM44, and it belongs to the insulated metal panel family for commercial, industrial and controlled-environment buildings.

The surface is embossed and lightly planked, which gives a uniform surface with slight shadow lines. The panel is used on exterior and interior industrial walls.

• Module width: 40 inches (1016 mm)
• Thickness: 2, 2.5, 3, 4, 5, 6 or 8 inches
• Length: 8 feet (2.44 m) minimum to 50 feet (15.24 m) maximum
• Side lap: double tongue and groove
• Exterior and interior profile: embossed, lightly planked, Mesa rib

The panel joinery permits installation vertically or horizontally.

The core is polyisocyanurate (PIR). The exterior face skin is 26 gauge G90 or AZ50 steel, with 24 and 22 gauge as options or 26 gauge 304 2B stainless steel. The interior face skin uses the same options, and stainless steel there is for interior applications only.

The wall is a single component that includes the exterior face, a weather barrier, insulation and a vapor barrier. Published global warming potential for the DM40 is 5.6 to 10.5 lb CO2eq per square foot (27.2 to 51.2 kg CO2eq per square meter), from an environmental product declaration covering cradle to gate. The lower figure is for a 2 inch 26/26 gauge panel and the higher for a 6 inch 22/22 gauge panel.

The nominal R-value of the DM40 is 7.2 per inch at 75°F mean temperature and 8.2 per inch at 35°F mean temperature, by ASTM C518. U-values are tested by ASTM C1363 at 2, 4, 6 and 8 inch thicknesses, with other thicknesses interpolated.

• 2 inches: R-14.4 and U-0.102 at 75°F mean; R-16.4 and U-0.093 at 35°F mean
• 2.5 inches: R-18.0 and U-0.088 at 75°F mean; R-20.5 and U-0.078 at 35°F mean
• 3 inches: R-21.6 and U-0.073 at 75°F mean; R-24.6 and U-0.064 at 35°F mean
• 4 inches: R-28.8 and U-0.044 at 75°F mean; R-32.8 and U-0.034 at 35°F mean
• 5 inches: R-36.0 and U-0.033 at 75°F mean; R-41.0 and U-0.027 at 35°F mean
• 6 inches: R-43.2 and U-0.022 at 75°F mean; R-49.2 and U-0.020 at 35°F mean
• 8 inches: R-57.6 and U-0.023 at 75°F mean; R-65.6 and U-0.018 at 35°F mean

• FM 4880: passed, Class 1 fire rating
• ASTM E84: flame spread index 25 or less, smoke developed index 450 or less
• NFPA 285 and NFPA 286: passed
• NFPA 268: assembly tested meets the requirements of the standard
• CAN/ULC S101 15 minute fire endurance, S134 and S138: maximum 6 inches thick
• CAN/ULC S102: flame spread index 20 or less, smoke developed index 195 or less
• ASTM E331: no uncontrolled water penetration at 20 PSF for 2 hours
• ASTM E283: air leakage under 0.01 CFM per square foot at 20 PSF
• FM 4881 Class 1 exterior wall systems: minimum 2.5 inch thickness
• Florida Building Code FL15060
• IAPMO ER-301

A separate fire-rated panel, the DM40-F+, appears in AWIP's range.

Embossing is the standard wall surface on the DM40. Smooth finishes may be available on request, depending on color, gauge and end use. Imperial White is the standard interior paint on this panel. Coil coat systems in multiple layers can replace the standard DM40 paints in aggressive environments, and chips are on request.

• Mesa DM44: the 44-inch Mesa wall panel
• Micro-Vee MV40: an overlapping, self-aligning joint
• Striated ST40: a striated finish that adds rigidity
• DM40-F+: a one-hour fire-rated insulated metal panel

The DM40 is a composite panel with a single-component wall design. Its joinery lets the panel run vertically or horizontally. Published performance covers thermal, moisture and vapor transmission.