A universal goal across the built environment has emerged: designing buildings that will stand the test of time. Metal walls are an increasingly sought-after building product for both interiors and exteriors, as they can withstand environmental wear for decades without significant changes to visual or performance characteristics.
Three types of metal panels offer opportunities for various applications: single skin, metal composite material, and insulated metal panels.
Single skin metal panels are lightweight and cost-effective options, made from any metal—often steel or aluminum—that can be fabricated into a variety of profiles and finishes.
MCM panels are a strong, durable option typically composed of two coil-coated metal sheets, bonded to a non-metal core. This panel type is available in a variety of shapes, making it an excellent choice for unconventional facade shapes, including bends, folds, and curves. One of the most common types of MCM is aluminum composite material, which often features polyvinylidene fluoride or fluoroethylene vinyl ether coatings and is well-suited to modern facade designs. These coating options allow versatile visual opportunities for metal wall panels. They are also generally long-lasting, weather-resistant, and durable.
IMPs are renowned for their long lifespans and excellence in optimizing the thermal performance of facades. They include a foamed-in-place core surrounded by metal skins, with various profiles and options for internal insulation materials.
Understanding the specific elements of these options allows architects to specify products best suited to the needs of each building they design.
| Characteristic | Single Skin Panels | Metal Composite Material Panels | Insulated Metal Panels |
| Applications | Applications range from industrial facilities and warehouses to soffits, screen walls, and commercial buildings. |
They are featured in commercial centers, medical buildings, schools, and apartment complexes. They also serve as cladding for tunnels and balcony surrounds. | These panels excel across numerous commercial, institutional, and heavy-duty industrial facilities. |
| Practical advantages | With many profiles, these panels suit projects that benefit from small-batch custom colors. |
They are used for ventilated facades and curtain wall infill, wrapping exteriors with soffits, cornices, ornamental accents, screen walls for walls and roofs, and column covers. | These panels are used for horizontal and vertical surfaces, roofs, and temperature-controlled storage. |
| Durability | Typically warrantied for 20 to 30 years, these panels often feature advanced anti-corrosion coatings to ensure excellent color retention and minimal maintenance. While less rigid and susceptible to ground-level impact damage, their fire and weather resistance make them a long-term, economical cladding option. | MCM panels are highly durable and maintain exceptional surface flatness. Their lightweight design is corrosion-resistant and can withstand harsh weather, offering a lifespan of 20 to 30 years or more. They require minimal maintenance and are impact-resistant, with finishes that retain luster for decades. | IMPs are highly durable and designed to last 30 to 50 years or more. They provide a complete, weathertight building envelope, offering superior thermal performance and consistent R-values. They are strong, require minimal maintenance, and feature specialized coatings that resist corrosion and UV damage, ensuring a long service life. |
| Recyclability | These panels can be 100 percent recyclable at the end of their long lifespan. They also typically contain a high percentage of recycled content when manufactured, supporting sustainable building. | MCM panels can be 100 percent recyclable. | With IMPs, steel elements are often made of recycled material and are recyclable, while foam is reusable. |
| Maintenance | Single skin metal panels are easy to install, economical to maintain, and easy to replace. They often hold a 20-year paint warranty, but periodic fastener retightening and washing are required. | Modern panels require minimal upkeep, dramatically lowering long-term costs. The cladding’s original brilliance and aesthetic appeal are preserved for many decades thanks to advanced coatings. It is recommended to clean them concurrently with windows. | This material is practically maintenance-free and boasts a 20-year-plus finish guarantee. The entire panel assembly and insulation backer must be replaced if necessary. |
| Formability | Easily customizable, these light-gauge panels offer simple fabrication for intricate corners. Advanced roll-forming allows diverse profiles, making small and custom orders readily available. | They provide superb pliability with sharp, crisp bends and can be easily radiused when required. This material allows for diverse geometric configurations and various irregular or complex shapes. | The intricate production sequence involves a continuous line with dual multi-pass roll formers for both panel faces. Roll forming is just a minor step in this post-cut method. |
| Cost | Installation costs are low due to simple trim, lightweight, and long panels (fewer fasteners). Factory pre-cutting significantly reduces the cost of field labor. |
Costing is influenced by the material, panel gauge, and system method (e.g., rainscreen). Adding exterior R-value insulation also modifies the total installation expense. Project complexity, core type (fire-resistant/polyethylene [FR/PE]), and labor rates affect final pricing. | Less mass and streamlined attachment methods reduce installation expenses, and simplified fastening systems lower overall project costs. |
| Installation | Installation is faster and more economical than other metal systems. The lighter mass and adaptability simplify handling, allow for minor field adjustments, and easily correct for uneven backing structure. | Initial build expenses are often reduced as these panels set up more quickly than masonry alternatives, and the work is not strictly sequential. Their low mass reduces the need for structural steel, and installers receive dedicated technical help. | Factory assembly allows for rapid site installation, halving the time of single skin panels. They offer superior span and require fewer supports. However, they require extreme caution during handling, often requiring specialized lifts and certified training. |
| Weathertightness | These panels are suitable for installation in virtually any climate or weather without risk of degradation. | Fabricated with a sealant-free joint system, these panels minimize water entry. This dry-fit design removes the need for wet seals, ensuring optimal cavity ventilation. This process effectively expels moisture, significantly lowering the risk of mold, mildew, and material breakdown. | The interlocking panel connection design resists water ingress. Dual tongue-and-groove side seams and butyl sealing compounds produce exceptionally airtight and water-resistant facades. |
| Colors and finishes | Offering sleek, textured surfaces, these panels are available in a range of coatings and finishes. Modern paint technology resists discoloration and degradation, enduring saltwater and corrosive settings. They are fabricated from diverse metals (e.g., galvanized, Galvalume, aluminum, and stainless steel) in varying thicknesses. |
Available in pre-set and bespoke hues, with an array of surface treatments. Available options are standard two-layer colors, metallic tones, and Mica effects. They are ideal for brand projects that require precise color matching. Material vendors offer unique color selections, creating numerous aesthetic possibilities. |
There are numerous color choices available in coatings made from polyester, siliconized polyester (SMP), PVDF, flurothane (II, IV, V), and plastisol. |
