Metl-Span architectural panels have thicker gauge facings that provide a better flat, visual appearance than the thinner gauges used for profiled, commercial/industrial panels, and offer longer spans and more impact resistance. Architectural panels are usually flat, but are also available in some profiles such as striated or light mesa (planked). Quite often, they are used for horizontal applications, where panel lengths can be sized to line up with window mullions. Standard widths provide the most cost economy, but custom widths allow the designer the freedom to line up horizontal reveals with window heads and sills, providing a clean, orderly appearance.
Metl-Span commercial and industrial panels serve as walls, ceilings and roofs for commercial and industrial buildings, in new and retrofit construction. Metl-Span insulated metal panels can be easily adapted to pre-engineered metal building designs for almost any end-use as walls and roofs, saving material and labor costs. Other end applications include schools, manufacturing facilities, distribution warehouses, equipment maintenance buildings, mechanical penthouses, kiosks, equipment screens, aircraft hangars, prison units and office buildings.
Metl-Span cold storage panels function as walls, ceilings and roofs for cooler, freezer and food processing buildings, in new and retrofit construction. In addition, Metl-Span panels are ideal for dry goods warehouses and other controlled environment buildings where temperature control and insulation values are critical.
ThermalSafe® combines advanced panel design with Metl-Span's sophisticated manufacturing expertise to create a composite panel that achieves one, two and three hour fire resistance ratings under the most demanding conditions. In addition to its fire resistant characteristics, the panel provides good thermal performance and protection from the elements. The unique LockGuard® interlocking side joint further enhances the fire resistant performance of the panel with its tongue and groove engagement of the mineral wool core.
Metl-Span CFR Roof panel is an insulated metal standing seam roof panel and is the foremost innovation in all-in-one composite roof panel design, combining durable interior and exterior faces with Metl-Span's unmatched polyurethane core. The CFR insulated metal standing seam roof panel is a truly unique answer to many deficiencies common with more traditional roofing materials of the past.
Metl-Span Backup Wall Systems is the ultimate backup wall system providing superior air, water, thermal and vapor protection in an all-in-one barrier component. It can be vertically and horizontally installed with nearly any type of exterior rainscreen system. This unique insulated metal wall panel system introduces new standards in cost savings, design integrity and sustainability.
Metl-Span’s line of Single-Skin panels includes ten configurations for wall applications and one for soffit application. The line consists of concealed fastener panels with 12” to 16” module widths and exposed fastener panels with module widths of 32” and 36”. The Artisan Soffit panels come in 8”, 10” or 12” widths.
The Metl-Span Resource section contains all standard CAD details, product literature and information regarding FM Global Requirements. Visitors may also view project photos, learn about online continuing education courses and find answers to the most frequently asked questions.
Metl-Span offers one of the most in-depth installer training programs in our industry. This program is dedicated to helping installers understand how the long-term performance of the insulated metal panel system can be affected by the installer’s attention to detail. Metl-Span is committed to educating erectors in the proper use, methods and procedures for insulated metal wall and roof panel installation. This new and innovative method of training will be beneficial to installers interested in quality workmanship and expanding their skill base.
Frame Components – each window unit consists of a perimeter frame made of extruded aluminum head, sill and jamb members. For multiple lite windows, the individual lites are divided by extruded aluminum muntins.
Frame Construction – to assure the rigidity of the window frame, the frame members are joined by flush butting and concealed shear blocks.
Glazing Provisions – the frame members are designed with glazing pockets, gasket keepers and snap covers for the installation of standard 1″ thick glazing material. The window frame is designed for the glazing to be installed from the interior.
Thermal Breaks – the frame members are designed with integral elastomeric thermal breaks to minimize thermal conductance.
Frame Seals – to assure weathertight performance, the window frames are designed with fully sealed joints, head and sill end dams and weep drainage provisions.
FRAME FINISH OPTIONS
Anodized – clear, dark bronze or black color
Two Coat Painted – custom color (primer & Kynar color coat)
Three Coat Painted – custom color (primer, Kynar color coat & clear coat)
Mill Finish – bare aluminum
WINDOW SIZE LIMITATIONS
Window Height – because the window unit’s head and sill are integrated into the horizontal wall panel joints, the window height must be in increments matching the wall panel widths. Standard wall panel widths are 24″, 30″ & 36″ and custom widths are available between 24″ & 36″. The maximum window height is 6′.
Window Width – the window unit’s jamb may be located to coincide with a vertical wall panel joint, or may be located away from the vertical wall panel joints. When located away from a vertical joint, the minimum distance between the window jamb and the vertical joint is 12″. The window unit’s head and sill members may be spliced to provide windows wider than 20′.
Load/Span Limitations – the maximum allowable window unit size and muntin spacing is determined by the load/span capability of the window support framing and the load/span capability of the muntins. For specific window frame design requirements, reference the Design Data section of this technical bulletin.
Maximum Lite Size – the maximum lite height and width is determined by the load/span and deflection capability of the glazing material. Refer to the glazing material manufacturer’s specifications and instructions for the specific glazing design requirements.
WINDOW TO WALL ASSEMBLY
Erection Sequence – the assembled window frame is designed to be installed in sequence with the wall panel installation.
Support Framing – the window assembly is designed to be supported by interior mounted support framing. The support framing design and material is not provided by Metl-Span. For support framing design requirements, reference the Design Data section of this technical bulletin.
Window Projection – the window frame is 4″ deep, and is designed to fit flush with the exterior face of the wall panels.
Head & Sill Fit – the window frame is designed so that head and sill members interlock into the tongue & groove edges of the wall panels above and below the window.
Jamb Fit (at vertical wall joint) – the window frame is designed for the continuation of the wall panel’s vertical joint gasket between the window’s jamb member and the end folds on the adjacent wall panels.
Jamb Fit (away from vertical wall joint) – the window frame is designed for the application of a backer rod and joint sealant between the window’s jamb member and the end folds on the adjacent wall panels.
WALL PANEL REQUIREMENTS
Panel Type & Thickness – the window frame is designed for installation with 2″ & 3″ thick CF horizontal wall panels.
Side Panels – rather than having to field cut the wall panels for the window opening, the window frames are designed for use with side panels that are factory cut and end folded. The minimum length of wall panels with end folds is 12″.
Panel Joint Reveal – The window frame is designed for installation with wall panels that have a horizontal joint reveal of 1/2″.
Although panels with joint reveals greater than 1/2″ may be used, such reveals will not match the 1/2″ reveal between the window unit’s head and the above window panel.
Air Infiltration – multiple lite windows were tested in accordance with ASTM E 283-99. At 6.24 psf air pressure (equivalent to 50 mph wind velocity), the measurable air infiltration rate was 0.05 cfrm/hr2
Water Infiltration – multiple lite windows were tested in accordance with ASTM E 331-00. At 12.0 psf air pressure (equivalent to 69 mph wind velocity), there was no water leakage.
Uniform Load Deflection – multiple lite windows were tested in accordance wiht ASTM E 330-02. At 30 psf positive & negative air pressure, the window assembly deflection did not exceed L/175. At 45 psf positive & negative air pressure, permanent set of the window assembly did not exceed 2%.
WINDOW ASSEMBLY OPTIONS
Factory Assembled – the window frame is factory assembled and shipped to the job site ready for field installation into the wall assembly.
Factory Engineered – the window frame components are factory fabricated and shipped to the job site for field assembly prior to installation into the wall assembly.
Components Order – the window frame components are shipped in stock lengths for field fabrication and field assembly prior to installation into the wall assembly.
Glazing Components – the window units are field glazed. A glazing components package is available as an option with any of the above window frame options. The glazing components include the necessary setting blocks and chairs, foam backers and dams, glazing gaskets and tapes.
Installation Drawings – submittal drawings and installation drawings will be available for the “Factory Assembled” and “Factory Engineered” window options.
Assembly Instructions – a window assembly manual will be provided for the “Factory Engineered” and “Components Order” window options.