Columns/Blogs

Even when the variables covered in the first four articles of this series are monitored closely, problems can still arise when metal panels are installed that result in a checkerboard appearance. In fact, such problems are more likely to occur during installation than during any other part of the process.

Profiles are extruded metal components used to construct curtain walls, louvers and other decorative accents. They usually contain intricate details, including angles, edges, grooves, recessed areas and other contours that make paint coverage difficult. Since paint thicknesses vary on these components, color consistency will, too.

The coatings process is inherently variable. No quality control program, no matter how stringent or demanding, can account for all the contingencies involved in the coatings process. In fact, many factors that affect color consistency are beyond the coatings manufacturer’s control.

Color-matching problems are common when multiple coating applicators are used on a project. American Architectural Manufacturers Association (AAMA) standards require that multiple applicators submitting coatings of the same color for the same part of a building measure within two Delta E units (DE) of one another on the Hunter color scale.

A new generation of coatings, incorporating natural materials such as metallics and micas, has helped contemporary architects create some truly extraordinary buildings. Unfortunately, coordinating coatings across numerous building components can present difficulties that prevent architects from achieving their intended vision.

In recent years, some manufacturers have sought to imply that silicon-modified polyester (SMP) and ultra-durable polyester coatings can offer the same long-term performance benefits as 70% PVDF or FEVE fluoropolymer coatings. Such assertions are misleading for two reasons.