Manufacturers
How should a property owner evaluate commercial metal roofing manufacturers?
Evaluate on three criteria: profile availability, warranty structure, and coating certification depth. A manufacturer that offers only two or three panel profiles limits the contractor's ability to match the correct profile to the building's slope, wind zone, and aesthetic requirements. The manufacturer must also maintain an engineering department that can issue project-specific wind uplift calculations.
What separates a strong commercial warranty from a weak one?
A strong commercial warranty covers the entire system, including panels, clips, fasteners, trim, and sealants, for weather tightness. A weak warranty covers only the panel material against manufacturing defects. The distinction matters because most commercial roof failures originate at flashings, transitions, and attachment points, not in the panel field. If the warranty excludes those components, it excludes the most common failure modes.
What coating certifications should a manufacturer provide?
The manufacturer must provide documentation showing their Kynar 500 coating meets Arkema's minimum 70% PVDF resin content requirement. They should also supply ASTM D4214 chalk test results and ASTM D2244 color difference measurements from independent laboratories. Manufacturers that cannot produce these documents are likely using a non-certified coating system that will not perform to the warranted specifications.
Why does regional distribution matter for Southern California projects?
Manufacturers with regional distribution in Southern California can deliver custom-cut panel profiles within days instead of weeks. This reduces job site storage time, minimizes material damage risk, and allows the contractor to order exact quantities rather than overbuying to cover potential shortages. For commercial projects with tight construction schedules, regional availability directly affects the contractor's ability to maintain the timeline.
Do manufacturers require installer certification for commercial warranties?
Yes. Most commercial system warranties require the installing contractor to hold a current certification from the manufacturer. This certification verifies that the crew has been trained on the specific gauge requirements, clip spacing protocols, and seaming procedures for that manufacturer's system. Installing without certification voids the system warranty.
Applicable Engineering Certifications
UL 580
UL 90
UL 790 Class A
UL 2218 Class 4
ASTM E 2140
All manufacturers specified by The Metal Roof Pros maintain current test reports for these certifications. We verify certification validity on every commercial project specification.