Products / Medallion-Lok
Medallion-Lok
UL 2218 Class 4McElroy Metal's snap-lock, concealed-fastener standing seam panel with a 1 3/4-inch seam height, available in 12, 16, and 18-inch panel widths in striated, ribbed (pencil rib), or flat pan profiles. Standard substrate is 24 gauge Galvalume steel, with 22 gauge Galvalume or .032/.040 aluminum optional, finished in Acrylic Coated Galvalume or Kynar 500 PVDF. Installs on slopes down to 3:12 over solid deck or open framing.
Manufacturer
Material
Product line
Standing Seam Metal Roofing Systems
Impact class
UL 2218 Class 4Standards met
UL 263 Class AUL 580 Class 90UL 2218 Class 4ASTM E1592
Status
active
Class 4 insurance note
Its UL 2218 Class 4 impact rating may qualify for an impact-resistant roof insurance credit with many Colorado carriers; verify eligibility with the insurer before relying on a discount.
Sources
- mcelroymetal.com verified 2026-07-16
- ibhs.org verified 2026-07-16