CF Tuff Wall®

CF Tuff Wall is a stucco-like insulated metal wall panel from Metl-Span with a polyisocyanurate (PIR) foam core. The exterior surface is a hard aggregated, fiber-reinforced polymer coating applied in the factory as the Tuff Cote finish system. It is a concealed-fastener panel used on commercial and industrial buildings in the United States.

The coating resists impact and abrasion. The exterior finish carries a 10-year limited warranty. The panel is a member of the insulated metal wall panels range, where it is the textured, coated option.

• Width: 36 in. or 42 in.
• Thickness: 2 in., 2-1/2 in., 3 in., 4 in., 5 in. or 6 in.
• Length: 8'-0" to 32'-0" installed horizontally; 8'-0" to 40'-0" installed vertically

The exterior face is stucco-embossed G-90 galvanized and/or AZ-50 aluminum-zinc coated steel in 24 or 22 gauge, with the Tuff Cote finish system applied at the factory. Panels 2, 2-1/2, 3 and 4 in. thick have no exterior profile. Panels 5 and 6 in. thick have a Mesa profile nominally 1/8 in. deep.

The interior face is stucco-embossed G-90 galvanized and/or AZ-50 coated steel in 26, 24 or 22 gauge, with a Light Mesa profile nominally 1/16 in. deep.

• Exterior texture: Tuff Cote finish system
• Finish options recorded: Applied Finishes and Igloo White
• Metallic finishes can show color shift, shade variance, striations and longitudinal patterning
• Light Stone in the Tuff Cote system does not match Light Stone in the Standard SP offering

The core is foamed-in-place PIR foam, a zero ozone depletion potential Class 1 foam. The joint is an offset double tongue-and-groove with an extended metal shelf for positive face fastening. Concealed clips eliminate thermal short circuits.

The k-factor is 0.112 at 35°F (1.6°C), based on ASTM C518, ASTM C1363 and thermal modeling. Values below are for a 42 in. width at 35°F.

• 2 in.: U-factor 0.058, R-value 17.9
• 2-1/2 in.: U-factor 0.045, R-value 22.4
• 3 in.: U-factor 0.038, R-value 26.9
• 4 in.: U-factor 0.028, R-value 35.9
• 5 in.: U-factor 0.022, R-value 44.8
• 6 in.: U-factor 0.019, R-value 53.8

• ASTM E84: flame spread under 25, smoke developed under 450
• ASTM E119: one hour non-load bearing rating with two layers of Type X gypsum, vertical or horizontal installation
• FM 4880: Class 1 fire rating, product approved; an exterior wall requires FM 4881 approval
• NFPA 285-19: the panel assembly met the requirements of the standard
• NFPA 286: the specimen met the criteria of IBC Section 803.1.2.1
• CAN/ULC S101: one hour non-load bearing rating with two layers of Type X gypsum, and the 10 minute stay-in-place requirement
• CAN/ULC S102, S134 and S138: met the requirements of each standard

• ASTM E72: results in a load chart
• FM 4881: Class 1 exterior wall structural performance, with a VSH rating in the FM Approval listings
• ASTM E283: air infiltration under 0.04 cfm/ft² at 1.57 psf
• ASTM E2357: under 0.04 cfm/ft² at 1.57 psf after 2,000 cycles at +/- 16.71 psf, with and without penetrations
• ASTM E331: no uncontrolled leakage at 6.24 psf for 2 hours

State of Florida product approval is held; the approval does not include the High Velocity Hurricane Zone.

• Specification section: MasterFormat 2012 Section 07 42 13.19
• Load span tables are based on Allowable Stress Design (ASD)
• Thermal values are based on ASTM C518, ASTM C1363 and thermal modeling

The V6 X-Span Clip is the listed concealed clip, with an edge trim detail F5986.

• Base: H-BE-01 extended trim leg, H-BE-02 overhang with drip edge, H-EB-01 flush extruded base
• Corners: H-CE-01 outside, H-CE-02 inside, H-CE-03 formed, H-CE-04 trimless inside, H-EC-01 extruded outside
• Eave, parapet and soffit: H-BE-03 wall and soffit
• Header, jamb and sill: H-EW-01, H-EW-02, H-EW-03, H-WH-01, H-WJ-01, H-WS-01
• Joints: H-JT-01 and H-JT-02 side joint, H-VJ-01 vertical joint with gasket, H-VJ-02 vertical joint with wet seal
• Vertical: C&I CF Vertical Detail Book, in PDF and CAD