GreenGirt CMH Roof™

GreenGirt CMH Roof™ is a Class I thermally broken cladding support system engineered for all roof cladding and insulation types.

Continuous roof insulation system with composite metal hybrid technology

GreenGirt CMH Roof™ is a Class I thermally broken cladding support system engineered for all roof cladding and insulation types. Proudly made in the USA by Advanced Architectural Products, it treats the roof as a “fifth wall,” delivering industry-leading thermal and structural performance. GreenGirt CMH Roof is available in GreenGirt Optima CMH™ and GreenGirt Max CMH™ Z-girts. Manufactured with either 0.20” or 0.17” steel-reinforced flanges, GreenGirt CMH Roof is the most effective continuous insulation system for roofs and is designed to meet the performance demands of any type of building. GreenGirt CMH Roof uses the crosswise and lengthwise tensile strength of GreenGirt CMH Z-girts for unmatched durability.

How It Works

The GreenGirt CMH Roof system adheres to the eight continuous insulation best practices. Additional features that make the GreenGirt CMH Roof system stand out as the best choice for your building include:

Easy Installation for all Spacing Demands

GreenGirt CMH Roof is equipped to handle any spacing requirements for simplified alignment, reduced labor, and faster installation – on top of reduced materials and costs.

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Engineered Tensile Strength

Engineered for both crosswise and lengthwise tensile strength, the system evenly distributes loads and prevents material and fastener creep over time.

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Universal Insulation Compatibility

Insulate your roof with any insulation your project requires; GreenGirt CMH Roof offers flexibility in building design to meet your project’s needs without sacrificing the building’s durability.

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Superior Moisture Management

Offers excellent moisture control that eliminates moisture-related issues, such as mold or mildew, for a healthier, more durable roof.

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Zero Through-Roof Metal, Fasteners, or Thermal Bridging

GreenGirt CMH Roof delivers industry-leading thermal efficiency – up to 92-99% – by using ThermaLock technology to eliminate the need for fastening materials that penetrate the insulation.

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GreenGirt® CMHᵀᴹ Roof Configuration Options

Compatible Insulation	Mineral wool, spray foam, rigid foam
System Components	GreenGirt CMH Z-girts
Compatible Substrates	Closed framing
GreenGirt CMH Z-Girt Length	8'
GreenGirt CMH Z-Girt Depths	1.5", 2", 2.5", 3", 3.5", 4", 4.5", 5", 5.5", 6", 8"
Compatible Insulation Thickness	1.5", 2", 2.5", 3", 3.5", 4", 4.5", 5", 5.5", 6", 8"
GreenGirt CMH Z-Girt Orientation	Horizontal, vertical
Compatible Cladding	All
Drainage Plane Location	Behind GreenGirt CMH Roof System

GreenGirt CMH System Options

GreenGirt Max CMH

GreenGirt Max CMH™ is a Class I continuous insulation system engineered for all weights of cladding, from ACM and fiber cement to terracotta and natural stone. Manufactured with 0.20” steel-reinforced flanges, GreenGirt Max CMH is the strongest Z-girt on the market and is designed to offer the widest spacing possible for continuous insulation systems. GreenGirt Max CMH uses crosswise and lengthwise tensile strength to establish it as more durable than Class II and Class III continuous insulation systems. Explore GreenGirt Max CMH continuous insulation >

GreenGirt Optima CMH

GreenGirt Optima CMH™ is a Class I continuous insulation system engineered for light- to medium-weight cladding—including ACM, metal, fiber cement, and high-pressure laminate panels. Optimized with thinner 0.17″ steel-reinforced flanges, GreenGirt Optima CMH reduces steel use and embodied carbon while preserving crosswise and lengthwise tensile strength – resulting in the highest strength-to-weight ratio in its class. Explore GreenGirt Optima CMH continuous insulation >

Downloads

Download essential technical documents to streamline your design, specification, and installation process.

Thermal Performance Report

Full view of the Harvard Klarman Hall construction installing the GreenGirt CMH Roof system to increase the building’s structural integrity and energy efficiency.

The GreenGirt CMH Roof system with polyiso insulation and integrated ThermaLock technology, eliminating thermal bridging and thermal bypass in the building’s roof.

Close-up view of the GreenGirt CMH Roof system with mineral wool insulation, showing the ThermaLock connectivity at 3 compression points.

Construction of the Harvard Klarman Hall project in Boston, Massachusetts, installing the GreenGirt CMH Roof system to increase thermal efficiency on all sides of the building.

A close-up view of the GreenGirt CMH Roof system installed on the Harvard Klarman Hall project, emphasizing the easy installation of this effective system.

The GreenGirt CMH Roof system with polyiso insulation, maintaining durability in the building’s “fifth wall.”

Installation of the GreenGirt CMH Roof system, demonstrating the ease of the system's installation.

Frequently Asked Questions (FAQs)

What is the thermal performance of GreenGirt CMH Roof™?

GreenGirt CMH Roof™ achieves overall assembly thermal efficiencies of up to 92–99%, depending on cladding weight, insulation depth, and roof assembly type. GreenGirt CMH Roof™ performs the same as GreenGirt Max CMH™ or GreenGirt Optima CMH™, since it uses the same Z-girt configurations and composite metal hybrid steel-reinforced flanges as those systems.

Is GreenGirt CMH Roof™ available in stainless steel?

Yes. The steel-reinforced flanges on GreenGirt CMH Roof™ are available in stainless steel for coastal, high-humidity, or otherwise corrosive environments, in addition to standard galvanized steel.

What roof panels and substrates is GreenGirt CMH Roof™ compatible with?

GreenGirt CMH Roof is compatible with every type of roof panel, including standing seam metal, corrugated metal, insulated metal panels (IMPs), metal shingles, and composite/synthetic roofing panels. On the substrate side, it’s compatible with closed metal or wood framing.

What insulation types and thicknesses work with GreenGirt CMH Roof™?

GreenGirt CMH Roof is compatible with mineral wool, spray foam, and rigid foam insulation, in thicknesses from 1.5″ to 8″.