Doubling Thermal Efficiency
at Windows
GreenGirt XO is a structural support system providing a thermal break by bringing windows into alignment with the thermal plane of the continuous insulation. Windows and openings play a significant role in the overall efficiency of a building envelope. The GreenGirt XO continuous insulation system for windows addresses the decade-old issue of significant thermal loss at openings by eliminating through-wall metal, through-insulation fasteners, conductive metal angles, and inefficient wood-blocking.
GreenGirt XO System
Configuration Options
| – | GreenGirt® XO™ |
|---|---|
| Insulation Type | Polyisocyanurate (Polyiso), Polystyrene, Phoenolic, Mineral Wool, or Spray Foam Insulation |
| System includes | GreenGirt XO Structural Support, Integrated Aluminum Flange |
| Substrates | Metal Studs, Wood Studs, Masonry, CMU |
| GreenGirt® XO™ Sizes | 2”, 3”, 4”, 5”, 6”” |
| Insulation Thickness | 2”, 3”, 4”, 5”, 6” |
| GreenGirt® Orientation | Horizontal/Vertical |
| Secondary Framing | Metal Girt |
| Types of Cladding | All |
| Drainage Plane Location | In front of the GreenGirt XO System |
The Problem: Thermal Efficiency Loss at Windows
Legacy materials such as metal angles and wood blocks prevent the thermal plane of the window from lining up with the continuous insulation, resulting in up to 40% or more energy loss for the opening.
The Solution: GreenGirt XO
GreenGirt XO is a composite metal hybrid (CMH) transition structural framing for windows and openings, bringing the thermal plane of the window in line with the continuous insulation, and maximizing the thermal efficiency to more than 90% for the opening.
How It Works
GreenGirt XO can more than double the R-value of a window opening by aligning the thermal plane of the window with the continuous insulation system, eliminating thermal transfer at the window framing. GreenGirt XO provides a structural support system that eliminates the need for through-wall metal or through-insulation fasteners.
GreenGirt XO Window Detail
GreenGirt XO Structural Support
+ Integrated Mini Aluminum Flange
GreenGirt XO Structural Support
+ Integrated Mini Spacer Aluminum Flange
GreenGirt XO Structural Support
+ Integrated Aluminum Flange
GreenGirt XO Structural Support
+ Integrated Aluminum Header
GreenGirt® XO™ – Components
| Description | Material | Length (ft) | Standard Depths (in) |
|---|---|---|---|
| GreenGirt XO Base for Headers/Jambs | Composite Metal Hybrid (CMH) | 8′ | 2″, 3″, 4″, 5″, 6″ |
| Description | Material | Length (ft) | Standard Depths (in) |
|---|---|---|---|
| GreenGirt XO Base for Sills/Jambs | Composite Metal Hybrid (CMH) | 8′ | 2″, 3″, 4″, 5″, 6″ |
| Description | Material | Length (ft) | Standard Depths (in) |
|---|---|---|---|
| Waterproofing surface and cladding attachment point | Aluminum | 8′ | *** |
| Description | Material | Length (ft) | Standard Depths (in) |
|---|---|---|---|
| Closure and cladding attachment point | Aluminum | 8′ | *** |
| Description | Material | Length (ft) | Standard Depths (in) |
|---|---|---|---|
| For atypical wall assembly depths | Aluminum | 8′ | *** |
| Description | Material | Length (ft) | Standard Depths (in) |
|---|---|---|---|
| Closure and cladding attachment point | Aluminum | 8′ | *** |
| Description | Material | Length (in) | Standard Depths (in) |
|---|---|---|---|
| Dead load and/or live load support for window sill | Aluminum | 3″, 6″ | 2″, 3″, 4″, 5″, 6″ |
Best Practices:
System Benefits
- Eliminates thermal bridging
- Compatible with new or retrofit construction
- High-performance structural composite metal hybrid (CMH) framing
- Environmentally friendly, recyclable, and manufactured net zero & carbon neutral
- Thermal plane of the window lines up with the thermal plane of the insulation
- NFPA 285 compliant
- No through-wall metal or through-insulation fasteners
- Eliminates metal angles and wood blocking
- Universal compatibility with substrates, insulation, cladding, and windows
- Moisture control
- Easy to install
GreenGirt XO Projects
Betances Residence
Bronx, NY
Greater Lansing Hospital McLaren Health
Lansing, MI
Tointon Academy of Pre-Engineering
Denver, CO
First Covenant Church of Omaha
Omaha, NE
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