External envelope

The external envelope, including façades, cladding, and weatherproofing, shapes both appearance and performance. These materials vary widely in composition and emissions intensity. Comparing options helps balance thermal efficiency goals with carbon transparency.

VELFAC Ribo wood – Top-guided window
1034 System PVDF SSG
634 System Anodize Captured
STRUGAL S53RP+ (Anodized)
STRUGAL S53RP+ (Coated)
1034 System PVDF Captured
634 System PVDF Captured
Extruded aluminium profiles (worst-case: thermal break)
Hicem Fibre Cement Board 4 mm
STRUGAL S52CRI (Coated)
Hyperion® Aluminium Profiles (average across all listed products)
Uncoated Aluminium Profile
Uncoated Aluminum Profile
Hicem Fibre Cement Board 12 mm
634 System PVDF SSG
126 T Punched Windows PVDF
M60 Curtain wall aluminium system
Hilux Calcium Silicate Board 10 mm
Hicem Fibre Cement Board 16 mm
STRUGAL S82RP (Coated)
STRUGAL S74RP (Anodized)
STRUGAL S74RP (Coated)
STRUGAL S64RP (Anodized)
STRUGAL S64RP (Coated)
STRUGAL S82RP (Anodized)
Cladding Sheet - 4.5mm
COLORBOND® steel 0.30mm BMT
Cladding Sheet - 6mm
ZINCALUME® steel 1.20mm BMT
Hilux Calcium Silicate Board 8 mm
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Footprint
kg CO₂e/unit
kg CO₂e/unit