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Insulated Metal Wall Panels (IMP) – High-Performance Wall Systems
Energy-efficient, durable, and architecturally versatile insulated metal wall solutions.
McElroy Metal partners with Green Span Profiles to manufacture insulated metal wall panels that deliver structural strength, high thermal efficiency, and clean architectural aesthetics. These IMP panels combine the exterior skin, interior liner, and insulation into a single component for fast installation and long-term performance in commercial, industrial, and climate-controlled buildings.
Core type: Rigid polyisocyanurate foam
IMP Wall Panels Ideal Applications
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Exterior walls for commercial, industrial, and institutional buildings delivering durable performance and thermal efficiency.
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Cold storage, food processing, and climate-controlled facilities needing consistent insulation and moisture control.
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Warehouse, manufacturing, and distribution centers suited for rapid enclosure and long-term durability.
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Retail and office buildings that demand clean architectural lines with reliable thermal performance.
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New construction or retrofit wall installations offering design flexibility and efficient project execution.
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Projects benefiting from fast, efficient enclosure with high energy performance.
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Interior partition or liner wall applications, profile dependent, supporting controlled environments, and easy installation
Top 3 Benefits of Insulated Metal Wall Panels
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Exceptional Thermal Performance and Energy Efficiency: Continuous polyiso insulation delivers high R-values, improved air and vapor control, and lower.
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Fast, Single-Step Installation: IMPs combine structure, insulation, and finishes in one panel, reducing framing requirements, shortening schedules, and minimizing on-site labor.
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Long-Term Durability and Architectural Versatility: Steel skins bonded to a rigid core provide impressive spanning capability, impact resistance, and low maintenance. Multiple profile options support a wide range of design aesthetics.
Insulated Metal Wall Panels
McElroy Metal offers a complete line of insulated metal wall panels manufactured in partnership with Green Span Profiles. Our wall systems are available in multiple profiles, thicknesses, and finishes to meet a wide range of performance and design requirements.
Insulated Metal Wall Panels
McElroy Metal offers a complete line of insulated metal wall panels manufactured in partnership with Green Span Profiles. Our wall systems are available in multiple profiles, thicknesses, and finishes to meet a wide range of performance and design requirements.
Uses: Partition Wall, Liner Wall, Tee Supported Ceiling
MaxLine insulated metal panel was designed as our widest and most economical insulated metal panel offering. It is intended to maximize installation efficiency and cost-effectiveness. The unique Green-Lock side-joint facilitates accurate sealant placement and helps ensure a high-performance vapor seal.
Uses: Partition Wall, Liner Wall or Tee Supported Ceiling Interior
MesaLine is our most widely accepted and used insulated metal panel. Utilized in commercial/industrial applications, the lined profile provides strength, facilitates foam adhesion and helps minimize natural imperfections in the steel faces. The shallow Mesa rib and the unique Green-Lock side-joint help ensure a high-performance vapor seal.
Uses: Exterior Wall
HSE stands for Heavy Stucco Embossed. MesaLine HSE was designed to satisfy those who desire something different for their Commercial/Industrial structure. Having all the positive attributes of the tried-and-true MesaLine profile, MesaLine HSE adds a heavy stucco embossment for a more dramatic impact. As with all of our wall profiles, MesaLine HSE has the unique Green-Lock side-joint helping to ensure a high-performance vapor seal.
Uses: Exterior Wall
The ShadowLine insulated metal panel is our most dramatic profiled offering. The panel has five, ¼” deep flutes along the exterior face. The 1¼” reveal disguises the side-joint and yields an aesthetic, monolithic look. The unique Green-Lock side-joint helps ensure a high-performance vapor seal.
Uses: Exterior Wall
The face of the WaveLine profile is micro-corrugated. This insulated metal panel offers a more architectural profile for designers desiring a sleek and distinctive look. The unique Green-Lock side-joint helps ensure a high-performance vapor seal in vertical as well as horizontal applications.
Uses: Exterior Wall
Impression is Green Span’s flat panel offering. This profile utilizes our Heavy Stucco Embossment (HSE). Impression gives the look of tilt-up concrete while offering unsurpassed thermal efficiency. In comparison to tilt-up, the Impression insulated metal panel is super lightweight and extremely cost-effective.
Uses: Partition Wall, Liner Wall, Ceiling
Designed specifically for dust-free environments, the CleanLine exterior face is free of all embossing and profiling. CleanLine insulated metal panels are manufactured specifically for interior use as partition-walls, liner-walls and ceilings. The unique Green-Lock side-joint facilitates accurate sealant placement and helps ensure a high-performance vapor seal.
Uses: Exterior Walls, Interior Partition Wall Assemblies
HighLine™ insulated metal panels combine the thermal performance of IMP construction with the familiar through-fastened R-panel profile used on many pre-engineered metal buildings. Ideal for commercial and industrial projects, HighLine delivers dependable Green Span quality in an economical insulated panel system designed for long-term performance.
Uses: Partition Wall, Liner Wall, Tee Supported Ceiling
MaxLine insulated metal panel was designed as our widest and most economical insulated metal panel offering. It is intended to maximize installation efficiency and cost-effectiveness. The unique Green-Lock side-joint facilitates accurate sealant placement and helps ensure a high-performance vapor seal.
Uses: Partition Wall, Liner Wall or Tee Supported Ceiling Interior
MesaLine is our most widely accepted and used insulated metal panel. Utilized in commercial/industrial applications, the lined profile provides strength, facilitates foam adhesion and helps minimize natural imperfections in the steel faces. The shallow Mesa rib and the unique Green-Lock side-joint help ensure a high-performance vapor seal.
Uses: Exterior Wall
HSE stands for Heavy Stucco Embossed. MesaLine HSE was designed to satisfy those who desire something different for their Commercial/Industrial structure. Having all the positive attributes of the tried-and-true MesaLine profile, MesaLine HSE adds a heavy stucco embossment for a more dramatic impact. As with all of our wall profiles, MesaLine HSE has the unique Green-Lock side-joint helping to ensure a high-performance vapor seal.
Uses: Exterior Wall
The ShadowLine insulated metal panel is our most dramatic profiled offering. The panel has five, ¼” deep flutes along the exterior face. The 1¼” reveal disguises the side-joint and yields an aesthetic, monolithic look. The unique Green-Lock side-joint helps ensure a high-performance vapor seal.
Uses: Exterior Wall
The face of the WaveLine profile is micro-corrugated. This insulated metal panel offers a more architectural profile for designers desiring a sleek and distinctive look. The unique Green-Lock side-joint helps ensure a high-performance vapor seal in vertical as well as horizontal applications.
Uses: Exterior Wall
Impression is Green Span’s flat panel offering. This profile utilizes our Heavy Stucco Embossment (HSE). Impression gives the look of tilt-up concrete while offering unsurpassed thermal efficiency. In comparison to tilt-up, the Impression insulated metal panel is super lightweight and extremely cost-effective.
Uses: Partition Wall, Liner Wall, Ceiling
Designed specifically for dust-free environments, the CleanLine exterior face is free of all embossing and profiling. CleanLine insulated metal panels are manufactured specifically for interior use as partition-walls, liner-walls and ceilings. The unique Green-Lock side-joint facilitates accurate sealant placement and helps ensure a high-performance vapor seal.
Uses: Exterior Walls, Interior Partition Wall Assemblies
HighLine™ insulated metal panels combine the thermal performance of IMP construction with the familiar through-fastened R-panel profile used on many pre-engineered metal buildings. Ideal for commercial and industrial projects, HighLine delivers dependable Green Span quality in an economical insulated panel system designed for long-term performance.
Color Charts
Green Span (IMP's) Color ChartMisc
Green Span Roof Panel Specifications Green Span Wall Panel Specifications Greenspan Limited Galvalume® Warranty Greenspan Limited Kynar Warranty Greenspan Limited Siliconized Polyester Warranty GSP data sheets MaxLine 3-1-19.pdf GSP data sheets MesaLine 3-1-19.pdf GSP data sheets ShadowLine 3-4-19.pdf GSP data sheets CleanLine 3-1-19.pdf GSP data sheets Impression 3-1-19.pdf GSP data sheets MesaLine HSE 3-1-19.pdf GSP data sheets RidgeLine 3-1-19.pdf GSP data sheets WaveLine 3-4-19.pdf Green Span ARRA LetterComponents Gallery
Impression Reveal Joint
Impression Reveal Joint Stack
Waveline Reveal Joint
Waveline Reveal Joint Stack
Impression Reveal Joint
Impression Reveal Joint Stack
Waveline Reveal Joint
Waveline Reveal Joint Stack
Notes & Manufacturing Locations
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IMP panels are manufactured by Green Span Profiles, a McElroy Metal joint venture company, at its Waller, Texas facility.
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Oil canning is a natural appearance characteristic of metal panels and not cause for rejection.
Why Choose McElroy Metal
McElroy Metal is an employee-owned manufacturer with more than six decades of experience producing high-quality metal roofing, wall systems, and substructural components. Our nationwide manufacturing and service center network ensures consistent availability, responsive support, and dependable delivery. Built on a culture of craftsmanship and partnership, our products are engineered for long-term durability and trusted performance on projects of every size.
Find a Distributor / Contractor Near You
Whether you’re building a new home or planning renovations, a metal roof can deliver long-term cost savings and comfort. To explore your options and find the product that meets your aesthetic and budgetary needs, contact a McElroy Metal distributor or contractor in your area today. We can’t wait to help make your dream home a reality.
Frequently Asked Questions
The questions below address common considerations and help guide product selection for your project.