STANDING SEAM
McElroy & NuRay

Standing Seam Metal Collections

Download Brochure
GET A FREE VIRTUAL QUOTE
McElroy Metal Standing Seam
NuRay Metal Standing Seam

McElroy Metal's snap-together standing seam roofing collections—Meridian, Instaloc, Medallion-Lok, and MasterLok-90—offer versatile solutions for both residential and commercial projects. Combining sleek aesthetics with advanced engineering, these systems eliminate the need for on-site seaming while providing durable, concealed fastener designs that ensure clean, modern lines and outstanding weather resistance. From the elegant and narrow seams of Medallion-Lok to the low-slope compatibility of MasterLok-90, each collection is tailored to specific architectural and performance needs. With easy installation, exceptional durability, and a variety of finishes and profiles, McElroy’s snap-together panels deliver superior quality and timeless appeal for any roofing project.

  • Brand:
    McElroy Metal
  • Price Range:
    $16-$26 / Sqf
  • Manufacturer Warranty:
    25 - 40 Year Warranty
  • Color Options:
    20+
  • Fire Resistance:
    UL 790 Class A, UL 580 Class 90 (Highest Rating)
  • Impact Resistance:
    UL 2218 Class 4
  • Wind Resistance:
    120-200 mph
  • Durability:
    24-Gauge Steel (22 Gauge Custom Order)
  • Maintenance:
    Low Maintenance
  • Cool Roof:
    Kynar 500® PVDF - ENERGY STAR® & LEED
  • Environmental Friendliness:
    100% Recyclable Materials
  • Made in:
    USA
  • Material Lead Time:
    3-4 Weeks
  • Installation Lead Time:
    2-4 Weeks
  • >
    Visualizer Tool

Nu-Ray Metals offers a selection of high-performance snap-lock roofing panels designed for durability, ease of installation, and modern aesthetics. The NRM-1000, NRM-1750, and NRM-6000 panels feature rib heights ranging from 1 to 1.75 inches and are available in various standard widths with options for flat, striated, or ribbed finishes. Engineered for thermal expansion and contraction with floating clip designs, these panels are ideal for roofs with minimum pitches from 2:12 to 3:12. Whether for residential or commercial applications, these snap-lock systems provide a clean, sleek appearance combined with reliable weather resistance.

  • Brand:
    NuRay Metals
  • Price Range:
    $16-$26 / Sqf
  • Manufacturer Warranty:
    25 - 40 Years
  • Color Options:
    20+
  • Fire Resistance:
    UL 790 Class A (Highest Rating)
  • Impact Resistance:
    UL 2218 Class 4 (Hail & Debris Resistant)
  • Wind Resistance:
    120 - 200 mph
  • Durability:
    22 - 29 Gauge
  • Maintenance:
    Low Maintenance
  • Cool Roof:
    Kynar 500® PVDF & Zincalume®
  • Environmental Friendliness:
    100% Recyclable Materials
  • Made in:
    USA
  • Material Lead Time:
    2-4 Weeks
  • Installation Lead Time:
    2-4 Weeks
  • >
    Visualizer Tool
McElroy Metal Standing Seam
NuRay Metals Standing Seam
McElroy Metal

Maxima

The Maxima series offers a versatile range of profiles and configurations, making it suitable for various architectural applications, especially in regions requiring high strength and wind resistance. The availability of different seam heights, panel widths, and configurations allows for tailored solutions to meet specific project requirements.
McElroy Metal

Medallion-Lok

The Maxima series offers a versatile range of profiles and configurations, making it suitable for various architectural applications, especially in regions requiring high strength and wind resistance. The availability of different seam heights, panel widths, and configurations allows for tailored solutions to meet specific project requirements.
McElroy Metal

Master-Lok

The MasterLok-90 and MasterLok-FS systems are designed for low-slope applications, accommodating slopes as low as 1/4:12. The MasterLok-90 offers a snap-together installation, while the MasterLok-FS provides a mechanically seamed option for enhanced performance. Both systems are suitable for projects requiring robust performance and weathertightness.
McElroy Metal

Mirage II

The Mirage II system is designed for low-slope applications, offering a concealed fastener design that provides a clean and modern appearance. Its versatility in installation over various substrates and robust testing credentials make it a reliable choice for both commercial and residential projects. The factory-applied sealant ensures enhanced weathertightness, particularly in low-slope scenarios.
McElroy Metal

Meridian

The Meridian system offers an aesthetically pleasing, economical, and easy-to-install solution for both commercial and residential applications. Its snap-together design without the need for clips simplifies installation, making it an excellent choice for various building types.
McElroy Metal

138T & 238T

The 138T and 238T systems are classified as symmetrical standing seam systems, offering numerous advantages over traditional asymmetrical panels. Their design facilitates ease of installation, allows for individual panel replacement, and provides a watertight seam. Additionally, these panels can be curved or tapered and are suitable for various applications.
McElroy Metal

Medallion I & II

The Medallion I & II systems are architectural standing seam systems that utilize separate batten caps installed over adjoining roofing panels. Medallion I features a narrow batten cap and offers the capability to be curved for radius applications, making it versatile for various architectural designs. Medallion II features a wider batten cap, providing a distinct aesthetic.
McElroy Metal

Instaloc

The Instaloc system is designed for applications where a low-profile seam is desired, making it an excellent choice for light commercial and residential projects. Its snap-together design with concealed clips ensures a clean aesthetic while providing reliable performance. The system's robust testing credentials attest to its durability and suitability for various architectural applications.
McElroy Metal Collections | Comparison Chart
Standing Seam Metal Roofing Systems Comparison
Specification Maxima Medallion-Lok Meridian 138T & 238T MasterLok-90/MasterLok-FS Mirage II Medallion I/Medallion II Instaloc
Minimum Slope1.5": 1:12, 2": 1/2:12, 3": 1/4:123:123:12138T: 2:12, 238T: 1/2:121/4:121/4:123:123:12
Seam Height1.5", 2", 3"1.75"0.91"138T: 1 3/8", 238T: 2 3/8"3"1.75"0.6875"1"
Panel Widths12", 16", 18"16", 18", 12" optional16"138T: 12", 16", 18"; 238T: 16", 18", 24"24"16"12", 16", 18"13"
Installation TypeMechanically SeamedSnap-lock with hidden clipsSnap-together, cliplessMechanically Seamed, Symmetrical T-seamSnap-together (ML-90), Mechanically Seamed (ML-FS)Concealed Fastener SystemBatten Cap SystemSnap-lock with concealed clips
Substrate Options24 GA, 22 GA Galvalume®, .032/.040 Aluminum24 GA Galvalume®Standard 26 GA Galvalume® (16" only), Standard 24 GA Galvalume® (12" and 16")24 GA, 22 GA Galvalume®, .032/.040 Aluminum, Copper (Houston only)24 GA, 22 GA Galvalume®24 GA Galvalume®24 GA Galvalume®24 GA Galvalume®
Fire RatingUL Class AUL Class AClass AUL Class AClass AUL790 Class AUL Class AUL790 Class A
Impact ResistanceUL 2218 Class 4UL 2218 Class 4Class 4 (UL 2218)UL 2218 Class 4UL 2218 Class 4UL 2218 Class 4UL 2218 Class 4UL 2218 Class 4
Best ApplicationsHigh strength & wind resistanceArchitectural aestheticsEconomical & easy installationLow-slope applications, metal-over-metal recoveryLow-slope applicationsLow-slope applicationsResidential & commercial with curved optionsLight commercial & residential
Curving InformationMaxima 1.5" and ADV can be curved (Min. radius: 12' for steel, 10' for aluminum)Not designed for curvingNot designed for curvingNot designed for curvingNot designed for curvingNot designed for curvingMedallion I can be curved (Min. radius: 30 inches)Not designed for curving
Panel ConfigurationsFlat, Striated, Pencil Ribs (Maxima 3" also offers Minor Ribs)Striated, Ribbed, Flat Pan16" Minor Ribs or Striated, 12" Minor Ribs or StriatedFlat, Striated, Plank & Pencil Ribs, Plank, Minor RibsRibbedRibbedStriated, Ribbed, Flat PanRibbed, Striated, Flat Pan
NuRay Metals

NRM-1000

Features a 1.50-inch tall rib design, available in 12-inch and 16-inch widths, with accent options including flat, striations, and ribs. Suitable for applications with a minimum roof pitch of 3:12.
NuRay Metals

NRM-1750

Combines various metal roofing styles with a floating clip system to accommodate thermal expansion and contraction. It has a 1.75-inch tall rib design and comes in 14-inch and 18-inch widths, offering accent options like flat, striations, ribs, and clip relief. The minimum roof pitch is 2:12.
NuRay Metals

NRM-2000

Merges structural panel strength with architectural aesthetics, featuring a 1.50-inch tall rib design and available in 12-inch and 16-inch widths. Accent options include flat, striations, and ribs. It requires a minimum roof pitch of ½:12, with factory-injected sealant necessary for pitches lower than 1:12.
NuRay Metals

NRM-2200

Offers concealed fastener design with optional factory-applied or injected sealant. Provides various warranty options ranging from 20 to 50 years. The panel comes in 14, 16, and 18-inch widths and features a 2-inch leg height that requires mechanical field seaming after installation.
NuRay Metals

NRM-4000

Designed for roofs, walls, and soffits, this panel has a 0.625-inch tall rib design with a standard 36-inch width. It features an anti-siphon groove and an exposed fastener design, suitable for a minimum roof pitch of 3:12.
NuRay Metals

NRM-4500

A cost-effective panel with a bell-top rib design, measuring 0.75 inches in rib height and 36 inches in width. It includes a notched rib design for easier installation and is appropriate for roof, wall, and soffit applications with a minimum roof pitch of 3:12.
NuRay Metals

NRM-5000

Ideal for vertical and horizontal wall and fascia applications, this panel has a 1.00-inch tall rib design and a 12-inch standard width. Accent options are striations and ribs, with a snap-lock design suitable for a minimum roof pitch of 3:12.
NuRay Metals

NRM-6000

Suitable for roofs, mansards, canopies, and fascia, featuring a 1.00-inch tall rib design and a 16-inch standard width. It offers accent options like striations and ribs, utilizing a snap-lock design for a minimum roof pitch of 3:12.
NuRay Metals

NRM-7000

Provides exceptional design flexibility for applications including roofs, walls, liner panels, and equipment screens. It has a 1.50-inch tall rib design, a 36-inch standard width, and an exposed fastener design, suitable for a minimum roof pitch of 3:12.
NuRay Metals

NRM-9000

A corrugated panel with a 0.875-inch tall rib design and a 32-inch standard width (29 inches on the roof). It features an exposed fastener design and is considered structural.
NuRay Metals Collections | Comparison Chart
Nu-Ray Metals Roofing Systems Comparison
NRM-1000 NRM-1750 NRM-2000 NRM-2200 NRM-4000 NRM-4500 NRM-5000 NRM-6000 NRM-7000 NRM-9000
Minimum Slope3:122:12½:12½:123:123:123:123:123:123:12
Seam Height1.50"1.75"1.50"2.00"0.75"0.75"1.00"1.00"1.50"0.875"
Panel Widths12", 16"14", 16", 17", 18"12", 16"14", 16", 18"36"36"12"16"36"32" (wall), 28" (roof)
Installation TypeConcealed fastener clip systemSnap-lock with floating clipMechanically seamed with concealed fastener floating clipMechanically seamed, floating clipExposed fastener, anti-siphon grooveExposed fastener with bell-top ribSnap-lock concealed fastenerSnap-lock concealed fastenerExposed fastener panel with 7.2" spanCorrugated exposed fastener panel
Substrate Options24, 26 GA G90 or AZ50 steel, .032 & .040 aluminum, 16oz & 20oz copper22, 24, 26 GA G90 or AZ50 steel, .032 & .040 aluminum, 16oz & 20oz copper22, 24, 26 GA G90 or AZ50 steel, .032 & .040 aluminum, 16oz & 20oz copper22, 24, 26 GA G90 or AZ50 steel, .032 & .040 aluminum, 16oz & 20oz copper29, 28, 26 GA G90 or AZ50 steel, 16oz copper29, 28, 26 GA G90 or AZ50 steel, 16oz copper24 and 26 GA G90 or AZ50 steel, .032 & .040 aluminum, 16oz & 20oz copper24 and 26 GA G90 or AZ50 steel, .032 & .040 aluminum, 16oz & 20oz copper22, 24 GA G90 or AZ50 steel, .032, .040, .050 aluminum, 16oz & 20oz copper24 and 26 GA G90 or AZ50 steel, .032 & .040 aluminum, 16oz & 20oz copper
Warranty40-year non-prorated40-year non-prorated40-year non-prorated40-year non-prorated40-year non-prorated40-year non-prorated40-year non-prorated40-year non-prorated40-year non-prorated40-year non-prorated
CoatingD2 Kynar 500® ULTRA-Cool™, Zincalume PlusD2 Kynar 500® ULTRA-Cool™, Zincalume PlusD2 Kynar 500® ULTRA-Cool™, Zincalume PlusD2 Kynar 500® ULTRA-Cool™, Zincalume PlusD2 Kynar 500® ULTRA-Cool™, Zincalume Plus, SMPD2 Kynar 500® ULTRA-Cool™, Zincalume Plus, SMPD2 Kynar 500® ULTRA-Cool™, Zincalume Plus, Ocean Guard ULTRA-Cool™D2 Kynar 500® ULTRA-Cool™, Zincalume Plus, Ocean Guard ULTRA-Cool™D2 Kynar 500® ULTRA-Cool™, Zincalume Plus, Ocean Guard ULTRA-Cool™D2 Kynar 500® ULTRA-Cool™, Zincalume Plus, Ocean Guard ULTRA-Cool™, Vintage
Fire RatingUL 580 Class 90UL 580 Class 90UL 580 Class 90UL 580 Class 90UL 580 Class 90UL 580 Class 90UL 580 Class 90UL 580 Class 90UL 580 Class 90UL 580 Class 90
Impact ResistanceUL 2218 Class 4UL 2218 Class 4UL 2218 Class 4UL 2218 Class 4UL 2218 Class 4UL 2218 Class 4UL 2218 Class 4UL 2218 Class 4UL 2218 Class 4UL 2218 Class 4
Best ApplicationsArchitectural, commercial, industrialHigh wind resistance, structural, architecturalLow-slope commercial, architecturalStructural roofing, high load & span capacityRoof, wall, soffit applications, post-frame industryCost-effective roofing, wall & soffit applicationsMansards, canopies, fascia, roofing applicationsMansards, canopies, fascia, roofing applicationsEquipment screens, liner panels, commercial walls, roofing and siding applicationsRoofing, wall, mansard, industrial uses, equipment screens, fences