Design and Color Trends in New Metal Construction

Design and color trends in metal roofing products are not exactly black and white. In fact, a whole host of options are available when choosing textures and colors for new metal construction projects, depending on specific criteria. Some are practical, some are aesthetic—but all are shaping how designers are specifying metal products, coatings and paints. Let’s walk through a few of the top trends in the industry now.

More color options for coil coatings

Bright Color Options in Coil for Design
Through vertical integration, manufacturers are offering more color options than ever.

It used to be that coil options were limited to standard stock choices and availability was determined by the coil coaters. Now, with evolving industry strategies, such as NCI’s vertical integration, many more manufacturers are properly positioned to enter into the market with multiple color choices across multiple brands without as much deviation. This also allows manufacturers to quickly adapt to requests for custom colors—both internally or externally.

Ratings and regulations are leading to more energy-efficient choices

Moreover, color requests based on aesthetics and paint systems have evolved based on changing code requirements. For additional benefits, specifiers can turn to many rating systems, such as the Cool Roof Rating Council and ENERGY STAR®, as well as earn LEED points by having specific SRI (Solar Reflectance Index) values.

Much has changed over the past 10 to 15 years. For instance, the components industry has evolved from customers merely selecting colors based on preference to a more integrated approach accounting for aesthetics, cost and energy efficiency. Today, owners and architects are more likely to consider a color such as Solar White to save on insurance or receive tax rebates. Environmental considerations and regulations have changed the way customers purchase steel, incorporating such issues as unique regulations for different states and weather conditions, LEED points and reflectivity into the atmosphere.

Insulated metal panels used in higher-end architectural projects

Another design trend in the industry is a move towards insulated panels, mimicking what is typical in the aluminum composite material (ACM) world. High-end car dealerships are known for design with ACM. This includes blocked-off designs that can be elongated, can be different colors or have joints in different places. This application has been ACM’s primary wheelhouse for decades. Now that ACM manufacturers have entered into the insulated metal panel (IMP)  industry, more of the design community is considering a thinner, horizontal IMP. The intention is to replicate the appearance of an ACM panel, while reaping the major cost and insulating benefits of IMPs.

Depth of color and texture: the rise of metallic colors

Architecturally, more metallic paints are being used. Historically, metal panels were white, tan or Galvalume. The current trend has expanded to a wider color palette, including mica fluoropolymer. These metallic coatings give depth to the color, adding sheen and sparkle. In fact, there are actually metal flecks in the paint. Metal oxide-coated mica pigments offer up the metallic look and add to the durability.

 Signature® 300 Silver Metallic Color Design
Vasa Fitness in Lehi, Utah features MBCI’s FW-120 panel in Signature® 300 Silver Metallic paint.

What’s behind this trend? Designers are thinking about metal roofs in a whole new way. They are looking to leverage colors and properties of paint to bring out a unique architectural appearance not previously available.

Conclusion

Trends in metal construction are as broad as the choices of color and coatings. Whether a reaction to energy savings criteria or simply a desire of an educated consumer to bring new life to their project, it’s worth taking the time to investigate all your options when specifying your next metal project.

How to Help Prevent Oil Canning

Oil canning is defined as the visible waviness in the flat portion of a metal panel.  Oil canning is a visual issue, not a weatherproofing or performance issue.  However, building owners will complain about waviness in metal panels on roofs, walls, and perimeter edge metal.  Edge metal and metal wall panels are more of a concern than low-slope metal panels because edge metal and wall panels are visible from the ground.  Steep-slope metal panels and shingles are also visible, so awareness of potential oil canning is important.

Oil Canning on a Metal Roof

What Causes Oil Canning?

Oil canning can happen when unwanted stresses are introduced at fasteners, clips, and over purlins and uneven substrates.  Over-driven fasteners, clips that are slightly misaligned relative to the clip/seam interface, and too much insulation between the purlins and panels can introduce these unwanted stresses.  A misaligned panel or edge metal clip, certainly after the seam or drip edge is crimped tight, will add stresses to metal panels and edge metal

Tips to Help Prevent Oil Canning

  1. Place clips correctly: Setting clips in the proper location for edge metal and metal panels (roof and wall) is critical.  The clip needs to fit into a panel seam without forcing the vertical seam out of plane.  The clip needs to be aligned correctly and sized appropriately to not compress the vertical portion of the seam.  Clips that secure edge metal need to be positioned correctly so that crimping the drip edge won’t twist or bend the edge metal.
    Although not highly visible, low-slope structural panels can oil-can at clip locations and where insulation is draped over purlins.  Compressed insulation at purlins can “push back,” adding stress to the panel and resulting in oil canning.
  2. Consider the roof color: Sometimes oil canning is inevitable.  The color of the metal or coating won’t really make a visual difference, but darker colors panels will heat up more in direct sunlight.  This may make oil canning worse in some cases.  However, striations and small ribs (which also add strength) may help prevent or hide oil canning.
  3. Choose a thick metal: Metal thickness matters, so specify metal that’s as thick as possible to avoid oil canning.  Thicker metals are stiffer, so they may resist deformation due to unwanted stresses.  This reduces the chance of oil canning in edge metal and wall panels, which are most commonly smooth-surfaced.

For more information on oil canning and its causes, see the Metal Construction Association’s white paper on the subject, which can be found at www.metalconstruction.org.

Consider these ideas on your next job.

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