Advanced Architectural Products offers different customization options for the GreenGirt CMH™ continuous insulation and SMARTci® building enclosure systems. One custom option is GreenGirt CMH Smooth, which eliminates the dual compression seals of ThermaLock, resulting in a smooth surface on the top and bottom of the Z-girt. This article highlights the key facts of the smooth customization and important notes to factor in before purchasing.
GreenGirt Smooth: What You Need to Know

- Rigid Insulation Options – While it is best practice to use custom profiled insulation with GreenGirt CMH and SMARTci systems for optimal performance, GreenGirt CMH Smooth can be used with any standard non-profiled insulation.
- Available for Max and Optima – Both GreenGirt Max CMH™ and GreenGirt Optima CMH™ can be accommodated with the smooth customization, meeting any performance or design requirements of the project.
- No ThermaLock technology – GreenGirt CMH Smooth lacks the dual 3-point compression seals that are included in standard GreenGirt CMH Z-girts. Eliminating the ThermaLock in turn creates the need for additional insulation retention tools, such as stick pins, washers, clips, adhesives, staples, and more, to secure the insulation.
- Existence of Thermal Bypass – When non-routed insulation is paired with a smooth Z-girt, the airflow behind and between the insulation panels will allow thermal bypass to decrease the thermal efficiency of the system.
Conclusion
When purchasing GreenGirt CMH Smooth, it is important to consider these facts that will impact the performance of the continuous insulation system.
A2P’s High-Performance ThermaLock Insulation Retention Technology
Guarantee insulation retention and eliminate thermal bypass in your building’s envelope with ThermaLock technology: the built-in insulation retention technology for GreenGirt CMH Z-Girts that eliminates the need for extra retention materials.
Not sure what GreenGirt CMH or SMARTci configurations are best for your next project and insulation materials? Our expert engineers are available to provide technical guidance and recommendations.
Related Resources:
GreenGirt CMH Systems Overview
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Frequently Asked Questions
What is GreenGirt CMH Smooth?
GreenGirt CMH Smooth is a custom option for GreenGirt CMH that removes the dual compression seals of ThermaLock, creating a smooth surface on the top and bottom of the CMH Z-girt. This customization can be accommodated for both GreenGirt Max CMH and GreenGirt Optima CMH.
Can GreenGirt CMH Smooth be used with standard (non-profiled) rigid insulation?
Yes. While it’s best practice to use custom-profiled insulation with GreenGirt CMH and SMARTci systems for optimal performance, GreenGirt CMH Smooth can be used with any standard non-profiled insulation.
Does GreenGirt CMH Smooth require anything extra to hold the insulation in place, and does it affect thermal performance?
Because GreenGirt CMH Smooth does not include ThermaLock’s dual 3-point compression seals, you may need additional insulation retention tools (examples include stick pins, washers, clips, adhesives, staples, and more) to secure the insulation. However, pairing non-routed insulation with a smooth Z-girt can allow airflow behind/between panels, creating thermal bypass that decreases thermal efficiency.

