Double-Lok® Trapezoidal Panel $$$$$
The Double-Lok® Trapezoidal Panel is a structural standing seam metal roofing system designed for superior wind and weather resistance, even under demanding roof loading conditions. With mechanically field-seamed ribs and a low ¼:12 minimum slope requirement, it’s ideal for large-scale commercial or industrial projects.

Why Choose Double-Lok®
The Double-Lok® Trapezoidal Panel is a high-performance structural metal roofing system built to withstand extreme conditions while maintaining a sleek, reliable design. Engineered for installation over open framing, it offers panel coverage options of 18" and 24" and stands out with its low minimum slope requirement of ¼:12—the lowest among Union Corrugating’s metal roof profiles. Its mechanically field-seamed ribs ensure superior weathertightness, making it an excellent choice for large commercial, industrial, and low-slope roofing applications.
Features & Benefits
Application:
- Designed for roof installations
- Ideal for large-scale commercial, industrial, and low-slope projects requiring weathertight performance
Fastening System:
- Concealed standing seam system for a clean, professional appearance
- Mechanically seamed ribs install with sliding clips for maximum wind uplift resistance and weather protection
Panel Dimensions & Design:
- Available in 18" and 24" coverage widths
- 3" rib height for enhanced structural integrity
- Minimum recommended roof pitch: ¼:12 — the lowest slope rating of all Union profiles
Installation Flexibility:
- Can be installed over solid decking or open framing
- Mechanically seamed ribs ensure a secure, watertight connection under demanding conditions
Substrates and Coatings:
- High-strength steel substrate for long-term performance
- Corrosion-resistant Galvalume® coating available in painted and unpainted options
- Material options:
– 24 gauge Galvalume® Plus (unpainted)
– 24 gauge Signature® 200 (siliconized polyester – select colors)
– 24 gauge Signature® 300 (PVDF – high-performance finish)
- Available finishes: Smooth (standard) or Embossed (optional on 24 gauge)
- Painted panels include a 45-year limited finish warranty
SL175 Snap Lock Standing Seam Roof Panel $$$$
Union's SL175 Snap Lock metal roofing panel is ideal for architectural and light structural applications, offering a clean look with tall ribs that snap securely together without special tools. Designed for strength and style, it provides excellent wind uplift resistance and is perfect for schools, shopping centers, banks, hotels, offices, and more.

Why Choose SL175 Snap Lock Standing Seam Roof Panel
The SL175 Snap Lock metal roofing panel from Union Corrugating is engineered for both architectural flair and structural performance. Featuring tall ribs that snap securely in place using concealed clips—without the need for special tools—this panel delivers a sleek, uninterrupted appearance. Its design maximizes wind uplift resistance, making it a durable and dependable choice. Whether used as a full roofing system or an accent feature, the SL175 is well-suited for a wide range of commercial and institutional buildings including schools, hotels, offices, and retail centers.
Features & Benefits
Application
- Designed for roof installations
- Ideal for commercial and architectural projects
Fastening System
- Snap-lock standing seam with concealed clips for a clean look
- Installs without special tools for fast and secure attachment
Panel Dimensions & Design
- 16" or 18" coverage options
- 1-3/4" rib height for strength and definition
- Minimum roof pitch: 1:12
Installation Flexibility
- Compatible with solid decking or open framing
- Eligible for weather-tightness warranty applications
Substrates and Coatings
- High-strength 24-gauge steel
- Galvalume® anti-corrosion coating (painted or unpainted)
- Finish options:
– Galvalume® Plus (unpainted)
– Signature® 200 (siliconized polyester – select colors)
– Signature® 300 (PVDF – high-performance finish)
Painted panels carry a 45-year limited finish warranty
SL150 Snap Lock Standing Seam Roof Panel $$$$
The SL150 Snap Lock panel combines durability and modern aesthetics, making it ideal for both residential and commercial roofs. With concealed clips and a tall rib profile, it offers strong wind uplift protection, weather resistance, and a clean, architectural look.

Why Choose SL150 Snap Lock Standing Seam Roof Panel
The SL150 Snap Lock standing seam panel is a versatile roofing solution suited for traditional homes, modern residences, and commercial buildings alike. Its sleek, tall rib profile delivers a bold visual impact while enhancing structural performance. Designed to install with concealed clips, the SL150 provides exceptional wind uplift resistance and weather protection. The panels are engineered to float on the roof deck, allowing for natural expansion and contraction as temperatures change—ensuring long-lasting performance and a refined finish.
Features & Benefits
Application
- Designed for roof installations
- Ideal for residential and light commercial use
Fastening System
- Snap-lock standing seam with concealed fasteners for a clean, modern appearance
- Installs with clips for secure attachment and enhanced wind resistance
Panel Dimensions & Design
- 15-7/8" coverage width
- 1-1/2" rib height for a sleek, architectural profile
- Recommended minimum roof pitch: 3:12
Installation Flexibility
- Designed for installation over solid decking
- Snap-lock design allows for thermal movement and long-term performance
Substrates and Coatings
- High-strength steel substrate for durability
- Galvalume® anti-corrosion coating available in painted and unpainted options
- Material options:
– 26 & 24 gauge Galvalume® Plus (unpainted)
– 26 gauge Signature® 200 (siliconized polyester – select colors)
– 24 gauge Signature® 300 (PVDF – high-performance finish)
Painted panels include a 45-year limited finish warranty
Slimline® $$$
Slimline standing seam panels offer a clean, low-profile look with 1” ribs and snap-lock seams for quick installation. Designed without clips, they feature an integrated fastener groove for secure, efficient attachment.

Why Choose Slimline®
Slimline standing seam metal roof panels deliver timeless curb appeal with clean, graceful lines suited for a variety of architectural styles. With 1” high ribs and a low-profile design, they provide a modern, streamlined appearance. These panels install efficiently thanks to snap-lock seams and an integrated fastener groove, eliminating the need for clips while ensuring a secure and lasting connection. Ideal for residential or light commercial projects, Slimline panels combine aesthetics with ease of installation.
Features & Benefits
Application
- Designed for roof installations
- Ideal for residential and light commercial projects
Fastening System
- Concealed fastener system for a clean, low-profile appearance
- Integrated fastener groove allows quick and secure installation
- Snap-locking ribs eliminate the need for clips
Panel Dimensions & Design
- 16" coverage width
- 1" rib height for a sleek, streamlined look
- Minimum recommended roof slope: 3:12
Installation Flexibility
- Installs over solid decking
- Snap-lock seams and fastener groove simplify installation and improve efficiency
Substrates and Coatings
- High-strength steel substrate for long-lasting durability
- Protected by Galvalume® anti-corrosion coating (painted or unpainted)
- Material options:
– 26 & 24 gauge Galvalume® Plus (unpainted)
– 26 gauge Signature® 200 (siliconized polyester – select colors)
– 24 gauge Signature® 300 (PVDF – high-performance finish)
Painted panels include a 45-year limited finish warranty
IR Panel $$$
IR metal panels are designed for wall applications in industrial, commercial, and steel-frame buildings. Part of the durable “R” panel family, they offer strength and versatility, performing reliably on roof pitches as low as 1:12 and spanning up to five feet.

Why Choose IR Panel
IR metal panels provide a strong and reliable solution for wall cladding in industrial, commercial, and steel-frame structures. As part of the proven “R” panel family, they are engineered to handle demanding applications with the ability to span up to five feet and accommodate roof slopes as low as 1:12. Their strength and adaptability make them a smart choice for projects requiring durability, coverage, and efficiency.
Features & Benefits
Application
- Designed for both roof and wall installations
- Ideal for industrial, commercial, and steel-frame buildings
Fastening System
- Exposed fastener design for simple and cost-effective installation
- Secure attachment for long-span performance
Panel Dimensions & Design
- 36" coverage width
- 1-1/4" rib height for added strength
- Minimum recommended roof pitch: 1:12
Installation Flexibility
- Can be installed over solid decking or open framing
- Spans up to five feet for efficient coverage and fewer supports
Substrates and Coatings
- High-strength steel substrate for lasting durability
- Galvalume® anti-corrosion coating in painted or unpainted options
- Material options:
– 26 & 24 gauge Galvalume® Plus (unpainted)
– 26 gauge Signature® 200 (siliconized polyester – select colors)
- Painted panels include a 45-year limited finish warranty
PBR Panel (Purlin Bearing Leg) $$ - $$$
Union Corrugating's PBR metal panels offer outstanding strength and durability, making them ideal for industrial, commercial, and steel-frame buildings. With the added support of a purlin bearing leg, these panels perform reliably on low-slope roofs and are also suitable for sidewall applications.

Why Choose PBR Panel (Purlin Bearing Leg)
Union Corrugating's PBR metal panels are engineered to deliver exceptional strength and versatility for industrial, commercial, and steel-frame buildings. Designed to perform on low roof pitches as shallow as 1:12 and spanning up to five feet, these panels offer reliable support and durability. The PBR panels feature an added purlin bearing leg for enhanced roofing support, while their IR counterparts are also suitable for sidewall applications, making them a flexible choice for a wide range of construction needs.
Features & Benefits
Performance
- 36" panel coverage with a 1-1/4" rib height provides reliable performance and efficient installation.
- Engineered for use on both roofs and walls with a minimum roof pitch of 1:12.
Protection
- Manufactured with high-strength steel and coated in corrosion-resistant
- Galvalume® for long-term durability.
- Painted panels include a 26 gauge Signature® 200 siliconized polyester coating with a 45-year limited finish warranty.
Installation & Versatility
- Compatible with both solid deck and open framing installations.
- Available in 26 and 24 gauge Galvalume® Plus for unpainted options and multiple color choices in painted panels.
Fastening System
- Exposed fastener design ensures a secure fit while allowing for quick and straightforward installation.
Master Rib® $$ - $$$
MasterRib metal panels are a durable and versatile solution ideal for residential, commercial, and post-frame buildings. With extra-wide ribs for added strength and a unique siphoning channel for superior leak resistance, MasterRib delivers dependable performance in even the harshest weather conditions.

Why Choose Mater Rib®
MasterRib is Union Corrugating’s most popular metal panel, known for its classic appearance and exceptional strength. Designed for both roofing and siding applications, it features wide ribs for increased structural integrity and easier handling during installation. Its standout feature—the oversized siphoning channel—adds an extra layer of leak protection, making it ideal for areas prone to heavy rain and high winds.
Features & Benefits
Performance
- 36" panel coverage with a 3/4" rib height delivers dependable performance and easy handling for installers.
- Designed for both roof and wall applications with a minimum recommended roof pitch of 3:12.
Protection
- Made from high-strength steel and coated with corrosion-resistant Galvalume® for lasting durability in harsh conditions.
- Painted panels feature the Signature® 200 siliconized polyester system with a 45-year limited finish warranty.
Installation & Versatility
- Suitable for installation over solid decking or open framing, making it ideal for residential, commercial, and agricultural buildings.
- Offered in 29 and 26 gauge Galvalume® Plus, as well as select galvanized and painted color options.
Fastening System
- Exposed fastener system ensures secure attachment and faster installation with fewer tools and steps.
PBU $
PBU is a 36” wide exposed fastener panel designed for both vertical and horizontal installation. Its versatility allows it to be used on roofs, walls, soffits, and interior liners over either open framing or solid substrates.

Why Choose PBU
The PBU panel is a flexible and cost-effective metal panel solution suitable for a wide range of applications. With a 36" coverage width and exposed fasteners, it can be installed vertically or horizontally, making it ideal for walls, roofs, interior liners, and soffits. Its compatibility with both open framing and solid decking offers design freedom and installation efficiency across residential, commercial, and industrial projects.
Features & Benefits
Application
- Suitable for roof, wall, soffit, and liner installations
- Works in both vertical and horizontal orientations
Fastening System
- Exposed fasteners for easy and economical installation
- Compatible with both solid deck and open framing
Panel Dimensions & Design
- 36" coverage width
- 3/4" rib height for a clean, low-profile appearance
- Minimum recommended roof pitch: 1:12
Substrates and Coatings
- High-strength steel substrate with Galvalume® corrosion protection
- Material options:
– 26 & 24 gauge Galvalume® Plus (unpainted)
– 26 & 24 gauge Signature® 200 (siliconized polyester – select colors)
– 26 & 24 gauge Signature® 300 (PVDF – high-performance finish)
- Painted panels include a 45-year limited finish warranty
2-1/2" Corrugated Panel $
Corrugated panels, once a staple of agricultural roofing, have evolved into a versatile design choice for both rural and urban applications. Their distinctive wave-like profile brings a classic, rustic aesthetic to homes, restaurants, retail spaces, and more.

Why Choose 2-1/2" Corrugated Panel
Corrugated metal panels are the original standard in metal roofing and siding, valued for their durability, simplicity, and iconic look. While traditionally used in agricultural settings, their popularity has expanded into modern architecture and design, where they add a timeless, rustic charm to a variety of structures—from residential homes to commercial and retail spaces. Their versatility, visual appeal, and proven performance make corrugated panels a go-to solution for both function and style.
Features & Benefits
Performance
- 24" panel coverage with a 1/2" rib height offers a classic corrugated profile ideal for adding traditional charm and durability.
- Designed for roof and wall use with a minimum roof pitch of 3:12, ensuring reliable performance in various building applications.
Protection
- Built from high-strength steel and coated with corrosion-resistant Galvalume® for lasting durability.
- Select painted panels feature a Signature® 200 siliconized polyester finish with a
- 45-year limited warranty for added protection and color retention.
Installation & Versatility
- Suitable for both solid deck and open framing installations, making it flexible for different project types.
- Available in 29 and 26 gauge Galvalume® Plus or galvanized options, with select colors in 26 gauge painted panels.
- Exposed fastener system allows for quick, secure, and cost-effective installation.