GreenGirt CMH
continuous insulation systems
A family of continuous insulation systems that combines structural composite metal hybrid sub-framing and compatible accessories with expert engineering support. GreenGirt CMH systems can be used with mineral wool, spray foam, or your preferred insulation material to eliminate thermal bridging and increase energy efficiency.
Composite metal hybrid continuous insulation systems for walls, roofs, and openings
GreenGirt Max CMH™
GreenGirt Optima CMH™
GreenGirt CMH Clips™
GreenGirt CMH Delta™ Adjustable
An adjustable continuous insulation system that combines structural composite metal hybrid sub-framing and compatible accessories with expert engineering support.
GreenGirt XO™
A continuous insulation system for windows that combines structural composite metal hybrid sub-framing and compatible accessories with expert engineering support.
Accessories
These products are fully compatible with GreenGirt CMH™ and SMARTci® systems, ensuring seamless integration and performance.
What is GreenGirt?
About GreenGirt CMH
Designers and builders often seek the load-bearing capacity and structural integrity of steel plus the non-conductive, thermally efficient properties of fiberglass – the GreenGirt composite metal hybrid family of continuous insulation systems can deliver on those features (and more!). GreenGirt CMH is a high-performance Z-girt system that combines the corrosion-resistant and insulative properties of fiber reinforced polymers with the structural resilience of a continuous metal component on each of the substrate- and cladding-facing flanges. This unique composition of CMH systems guarantees high structural strength and ensures robust screw retention – allowing screws to permanently fasten into a continuous metallic structural support for effective and reliable load distribution. Installers often favor CMH systems for their ease of installation – comparable to installing standard steel Z-girts.
Available in widths up to 8 inches, GreenGirt CMH systems eliminate the need for any insulation retention tools and conveniently work with all types of insulation: mineral wool, spray foam, and rigid-board insulation like XPS, EPS, and dual foil-faced class A polyiso.
Fully-integrated continuous insulation systems
GreenGirt CMH and SMARTci are most commonly specified as standard Z-girt wall systems (for vertical, horizontal, or diagonal installation), but complementary systems are available for use on roofs (GreenGirt CMH Roof), around windows and doors (GreenGirt XO), for adjustability (GreenGirt CMH Delta Adjustable), and as clips (GreenGirt CHM Clips) – making convenient, versatile, and efficient fully-integrated systems.
Popular for its composite metal hybrid systems, Advanced Architectural Products has engineered and provided its GreenGirt CMH continuous insulation system in a multitude of sizes and configurations to accommodate all insulation types – for installation on thousands of buildings across the U.S., Canada, and beyond. These systems leverage composite metal hybrid materials for structural strength, fastener torque retention, durability, thermal efficiency, and more.
A historical evolution – from steel to FRP to CMH
Steel has been a long-standing choice for sub-framing as it stands out for strength and durability. But steel is a conductive material, making it difficult – if not impossible – to use steel sub-framing to achieve high R-values, energy code compliance, and overall healthier buildings.
The desire for energy efficient building enclosures and high R-values increased demand for fiber-reinforced polymer (FRP) sub-framing products. Made entirely of non-conductive fiberglass, these Z-girt products are efficient at eliminating the thermal bridges that occur in buildings, however, they don’t have the same structural strength as steel – reducing their longevity, durability, and fastener retention, especially under the extreme service temperatures that can occur inside sub-framing systems.
Enter composite metal hybrid, popularly known as “CMH” – the preferred choice today for continuous insulation systems. CMH combines the strength and durability of steel with the non-conductive, thermally efficient properties of fiberglass.
Compare and Choose the Best Solution for Your Project
Easily explore the key features and benefits of our systems and others in the market with a simple checklist and comparison guide. Whether you’re deciding between systems or need a side-by-side breakdown, click below for a comprehensive view to help you make an informed choice.
Frequently Asked Questions (FAQs)
What is GreenGirt CMH™?
GreenGirt CMH™ is a family of composite metal hybrid continuous insulation systems, including GreenGirt Max CMH™, GreenGirt Optima CMH™, GreenGirt CMH Clips™, GreenGirt CMH Delta™ Adjustable, GreenGirt CMH Roof™, and GreenGirt XO™. Each system uses composite metal hybrid sub-framing, which merges the thermal properties of composite with the structural strength of steel, and each also serves as the structural sub-framing component of SMARTci® building enclosure systems. Every GreenGirt CMH™ system also comes with expert engineering support, including a project-specific application review and design assistance from A2P’s engineering team.
What insulation types work with the GreenGirt CMH™ family of systems?
Every system in the GreenGirt CMH™ family, GreenGirt Max CMH™, GreenGirt Optima CMH™, GreenGirt CMH Clips™, GreenGirt CMH Delta™ Adjustable, GreenGirt CMH Roof™, and GreenGirt XO™, is compatible with mineral wool and spray foam insulation, though the exact thickness range varies by product (1.5″ to 8″ depending on the system, narrower on some). GreenGirt CMH Roof™ and GreenGirt XO™ also support rigid foam insulation, and GreenGirt Max CMH™ and GreenGirt Optima CMH™ support non-routed rigid insulation panels through their optional Smooth variant, which excludes ThermaLock.
Does GreenGirt CMH™ require special tools to retain insulation?
Every system in the GreenGirt CMH™ family other than GreenGirt XO™ holds insulation in place with a built-in ThermaLock insulation retention feature, eliminating the need for separate retention tools or stick pins and simplifying installation regardless of insulation type.
What's the widest GreenGirt CMH™ sub-framing available?
GreenGirt Max CMH™ and GreenGirt Optima CMH™ Z-girts are available in depths up to 8 inches.
What applications does the GreenGirt CMH™ family cover beyond standard wall systems?
Beyond standard vertical, horizontal, or diagonal wall installations, the GreenGirt CMH™ family includes complementary systems for roofs (GreenGirt CMH Roof™), windows and doors (GreenGirt XO™), corrective adjustability (GreenGirt CMH Delta™ Adjustable), and clip-based installation (GreenGirt CMH Clips™).
Does GreenGirt CMH™ sub-framing have fire testing?
Yes. GreenGirt CMH™ is ASTM E84 tested and NFPA 285 compliant. The ASTM E84 standard assesses surface burning characteristics, while NFPA 285 evaluates fire propagation characteristics. GreenGirt CMH™ is also bromine, halogen, and Red List-free.
Is GreenGirt CMH™ sub-framing available in colors other than green?
Yes. GreenGirt CMH™ comes in green across the family, with black also offered on GreenGirt Max CMH™, GreenGirt Optima CMH™, GreenGirt CMH Clips™, and GreenGirt CMH Roof™.