Text (10 of 23) in How to Specify and Install GRANEX

Installation

17-10

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GRANEX® may be mounted as a complete exterior wall or as an infill panel on supporting structures of steel or wood. Vertical framing members of furring strips should be placed 16" (400 mm) or maximum 24" (600 mm) on center. All vertical and horizontal joints must be supported by a framing member. In curtain wall designs, horizontal rails will be required with spacing dictated by wind load factors. A joint gap of no less than 1/4" (6.4 mm) must be maintained between all panels.

Steel framing must have a galvanized finish or equivalent rust-resistant protective finish. For a single story building, minimum gauge is 18. For multiple story construction, consult local building codes. Wood framing should be pressure-treated lumber for exterior use or equivalent. For optimum results, the bond breaker/thermal tape recommended for steel framing should also be used with wood framing.

A closed cell PVC self adhesive tape should be applied to the building substrate along all stud lines, directly under the GRANEX® panels. This tape should be 12#/ft 3.3/16" thick and 1.5" wide.

GRANEX® attachment screws must be installed using a power tool equipped with a variable torque slip clutch. The amount of torque used to install these screws must be just enough to drive the screw into the stud.

The use of excessive torque can compress the foam tape and lead to unwanted appearance defects and periodic formation of condensation along stud lines. To protect against the possible formation of condensation in the wall cavity, it is strongly recommended that a minimum 1" (25 mm) air space be maintained immediately behind the GRANEX® panel. Allowance to be made for the cavity to drain to the exterior at the bottom of the wall system.

Care should be taken when hoisting GRANEX® panels into place so that slings, ropes or wires are not allowed to damage panel edges. On-site conditions will dictate the type of hoisting equipment required.

104 Maple Ave.
Inglewood, Ontario, Canada
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