Galvaspan™

Galvanized Steel Curtainwall Backpans

In curtain wall construction the control of heat flow is generally achieved through the use of insulation. Although it is not apparent from the exterior, the curtain wall system uses considerable insulation usually behind spandrel glass or any opaque panels.

Because of the materials used in the structure, i.e., glass and metal, which are highly conductive, the system must also contend with potential condensation on the interior surfaces. To curtail this effect, most curtain wall systems incorporate three distinct features: a sealed double glazed window or an insulated metal pan, a thermally broken mullion, and a rainscreen design.

Galvaspan™ galvanized steel back pans are installed on the interior face of curtain wall systems in spandrel areas and are secured to the wall framing using appropriate fasteners. The cavity of the back pan is filled with mineral wool or fiberglass that is pin welded to the steel pan.

Galvaspan™ galvanized steel back pans are available in 20 or 22 gauge galvanized steel, and 4 profiles to suit a variety of conditions. All brake formed back pan corner joints and seams are spot welded, then sealed using a butyl rubber, component sealing compound. The interior side of the pans may be painted as an option for aesthetic reasons i.e. where back pans are visible from the building interior.