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Butler defines the standard for precision and quality—delivering integrated building systems with control and consistency. From PEMB to hybrid and retrofit, we align early to reduce risk and drive predictable outcomes.

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Explore a library of technical documents, product information and visual assets to support planning and design—from downloadable resources to image libraries.

About

For decades, Butler has defined the standard for quality and performance in steel building systems. Through precision-engineered systems and a nationwide Builder® Network, we deliver the consistency and reliability projects demand.

Close up of assembled MR-24 steel roof panels

Mr-24® Roof System

The industry’s most proven standing seam metal roof – engineered for unmatched weathertight performance.

THE ROOF THAT SET THE STANDARD

Setting the bar for standing seam roof systems

The MR-24 Roof System is the industry’s most reliable standing seam metal roof for a reason. It’s backed by over 50 years of field-proven performance with more than 3 billion square feet installed.

Its unmatched weathertight performance is made possible by the 360-degree Pittsburgh double lock seam, factory-punched precision and fully integrated design.

Engineered to move with your building for superior, lasting performance, it eliminates leaks, callbacks and re-roofing. We back it with an optional 25-year weathertightness and finish warranty. Not only do you get the best roof in the industry, but you also get peace-of-mind that’s unmatched.

Product Options

Product Options

MR-24 Conventional Roof

The MR-24 Conventional Roof System allows installation of MR-24 seam technology on conventionally-framed steel structures. So, you get the same double-lock standing seam performance along with the flexibility to install on many building types.

  • The Conventional MR-24 Roof System can be installed over Butler B-Deck or a comparable structural deck to meet the requirements of your project.
  • The polyisocyanurate rigid insulation over a continuous vapor retarder supports high R-values per energy code.
  • Designed to interface with standard bar joist and metal deck, it features conventional framing integration.

Download Product Sheet

MR-24 Conventional Roof System cutaway
MR-24 Conventional Roof MR-24 performance for conventional structures.

Product Options

CMR-24 Roof System

The CMR-24 provides an aesthetic roof option. It also provides a finished interior surface and improved thermal performance meant for controlled environments.

  • Rigid insulation assembly includes polyisocyanurate insulation, which is installed above a continuous vapor retarder to support high R-values.
  • An interior steel liner panel is a 28, 26, 24 or 22 gauge Mod-36 liner, which provides a finished ceiling and contributes to diaphragm strength.
  • The continuous vapor retarder means that the membrane between the liner and insulation has controlled moisture protection.

Download Product Sheet

CMR-24 Roof System
CMR-24 Roof System The CMR-24 enhances MR-24 performance.

PRODUCT SPECS

Download Color Chart

Panel Width
24" (610 mm)
Panel Thickness
24 and 22 gauge
Material
ASTM A792 Aluminum-Zinc alloy
Coating
Acrylic coated (bare) or painted
Insulation Options
Up to R-40 polyisocyanurate
Wind Uplift Rating
UL Class 90, approved by FM Global and Miami-Dade
Warranty
Optional 25-year weathertightness and finish warranty
Color Options
Multiple solar-reflective colors (Butler-Cote FP-500®)

CONTACT US

Talk with Butler to bring clarity to your project early. Our team helps align design intent, performance requirements and delivery expectations so you can move forward with confidence.

FIND A BUILDER

Locate an authorized Butler Builder® in your area. Our nationwide network makes it easy to identify experienced partners who work within Butler systems and share the same commitment to quality as we do.