Environmental Product Declaration
GlasRoc® Sheathing 5/8” Gypsum Board- Montreal (Prospective EPD)
Environmental Product Declaration (EPD) for GlasRoc® Sheathing 5/8” Gypsum Board- Montreal (Prospective EPD), manufactured by CertainTeed Saint-Gobain. Declaration SmartEPD-2026-145-0979-01, prepared according to Smart EPD® Part B PCR for Gypsum Panels, 1000-004, v2.0, valid until July 10, 2027.
- Functional unit
- 1,000 ft2 of product
- Valid until
- July 10, 2027
- PCR
- Part B PCR for Gypsum Panels 1000-004
Declaration details
- Manufacturer
- CertainTeed Saint-Gobain
- Program operator
- Smart EPD
- Declaration number
- SmartEPD-2026-145-0979-01
- Date of issue
- July 10, 2026
- Valid until
- July 10, 2027
- Product category rules (PCR)
- Smart EPD® Part B PCR for Gypsum Panels, 1000-004, v2.0 (version 2)
- Standard
- ISO 14025:2006 and ISO 21930:2017
- Functional unit
- 1,000 ft2 of product
- System boundary
- Cradle to grave (A1 - A3, A4, A5, B1 - B7, C1 - C4)
- Product specificity
- Product Specific
- Manufacturing specificity
- Facility Specific
- Manufacturing plant
- CertainTeed Gypsum (700 1re Avenue, Sainte-Catherine, QC J5C 1C5, Canada)
- Product category
- Finishes › Gypsum
- Product service life
- 75 years
- Verifier
- Vijay Thakur, Individual Verifier
- LCA software
- Sphera LCA for Experts (formerly GaBi) 10.9.2
- Program instructions
- Smart EPD General Program Instructions v.2.0, March 2025
Life cycle assessment results
Results per 1,000 ft2 of product.
Environmental Impact Assessment Results
| Indicator | Unit | A1-A3 | A4 | A5 | B1 | B2 | B3 | B4 | B5 | B6 | B7 | C1 | C2 | C3 | C4 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| GWP-total (incl biogenic) | kg CO2 eq | 2.21e+2 | 5.35e+1 | 2.10e+1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1.83e+1 | 0 | 2.19e+1 |
| GWP-fossil | kg CO2 eq | 2.21e+2 | 5.32e+1 | 6.67e+1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1.82e+1 | 0 | 2.19e+1 |
| GWP-total | kg CO2 eq | 2.24e+2 | 5.29e+1 | 1.98e+1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1.81e+1 | 0 | 2.15e+1 |
| GWP-total (excl biogenic) | kg CO2 eq | 2.24e+2 | 5.26e+1 | 6.55e+1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1.80e+1 | 0 | 2.15e+1 |
| ODP | kg CFC 11 eq | 5.46e-4 | 1.86e-11 | 5.16e-7 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6.36e-12 | 0 | 1.16e-10 |
| AP | kg SO2 eq | 4.94e-1 | 1.63e-1 | 3.70e-1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8.45e-2 | 0 | 1.13e-1 |
| EP-Fw | kg N eq | 3.98e-2 | 3.48e-5 | 1.00e-3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1.19e-5 | 0 | 7.28e-6 |
| EP-Marine | kg N eq | 1.26e-1 | 1.48e-1 | 1.14e-1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 7.88e-2 | 0 | 5.64e-2 |
| POCP | kg O3 eq | 8.79e+0 | 4.34e+0 | 3.85e+0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2.48e+0 | 0 | 2.03e+0 |
| ADP-fossil | MJ | 2.43e+3 | 6.73e+2 | 1.42e+3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2.31e+2 | 0 | 3.19e+2 |
Resource Use Indicators
| Indicator | Unit | A1-A3 | A4 | A5 | B1 | B2 | B3 | B4 | B5 | B6 | B7 | C1 | C2 | C3 | C4 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PERE | MJ | 3.95e+3 | 3.04e+1 | 3.74e+2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 9.38e+0 | 0 | 4.97e+1 |
| PERM | MJ | 2.77e+1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| PERT | MJ | 3.98e+3 | 3.04e+1 | 3.74e+2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 9.38e+0 | 0 | 4.97e+1 |
| PENRE | MJ | 1.07e+3 | 7.54e+2 | 1.48e+3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2.33e+2 | 0 | 3.27e+2 |
| PENRM | MJ | 1.41e+2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| PENRT | MJ | 1.21e+3 | 7.54e+2 | 1.48e+3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2.33e+2 | 0 | 3.27e+2 |
| FW | m3 | 1.22e+1 | 2.34e-2 | 1.31e+0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 7.22e-3 | 0 | 3.54e-2 |
| SM | kg | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| RSF | MJ | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| NRSF | MJ | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| RE | MJ | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Waste and Output Flow Indicators
| Indicator | Unit | A1-A3 | A4 | A5 | B1 | B2 | B3 | B4 | B5 | B6 | B7 | C1 | C2 | C3 | C4 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| HWD | kg | 4.49e+1 | 1.58e-7 | 6.23e-7 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2.79e-8 | 0 | 5.15e-8 |
| NHWD | kg | 1.87e+0 | 8.85e-2 | 7.42e+1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1.56e-2 | 0 | 5.79e+2 |
| HLRW | kg | 8.88e-6 | 2.73e-6 | 1.19e-5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4.83e-7 | 0 | 1.80e-6 |
| ILLRW | kg | 1.39e-2 | 2.29e-3 | 1.07e-2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4.05e-4 | 0 | 1.55e-3 |
| CRU | kg | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| MFR | kg | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| MER | kg | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| MNER | kg | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| EEE | MJ | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| EET | MJ | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Carbon Emissions and Removals
| Indicator | Unit | A1-A3 | A4 | A5 | B1 | B2 | B3 | B4 | B5 | B6 | B7 | C1 | C2 | C3 | C4 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| BCRP | kg CO2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| BCEP | kg CO2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| BCRK | kg CO2 | -1.47e-2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| BCEK | kg CO2 | 0 | 0 | 1.47e-2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| BCEW | kg CO2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| CCE | kg CO2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| CCR | kg CO2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| CWNR | kg CO2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
ND = not declared. Life cycle modules: A1-A3 product stage, A4-A5 construction process, B use stage, C end of life, D benefits and loads beyond the system boundary.
Material composition
| Material/Component Category | Origin | % Mass |
|---|---|---|
| Gypsum | Confidential | 85 - 95 |
| Internally recycled Gypsum | Confidential | 2 - 9 |
| Glass Mat | Confidential | 2 - 6 |
| Fiberglass | Confidential | 0 - 1 |
| Silicone | Confidential | 0 - 1 |
| Additives | Confidential | 0 - 1 |
| Packaging material | Origin | Mass (kg) |
|---|---|---|
| Tape | Confidential | 0-1 |
| Spacers | Confidential | 1.5-2 |
| Biogenic carbon content | kg C per 1000 ft2 |
|---|---|
| Biogenic carbon content in accompanying packaging | 0.004 |
Hazardous substances
No regulated hazardous or dangerous substances are included in this product
Scenarios
Transport to the building site (A4)
- Fuel type
- Diesel
- Vehicle type
- Commercial tractor-trailer truck
- Transport distance
- 448 km
- Capacity utilization
- 70%
- Weight of products transported
- 1122 kg
- Packaging mass
- 2.25 kg
Transport to the building site (A4)
- Fuel type
- Diesel
- Vehicle type
- Rail
- Transport distance
- 208 km
- Capacity utilization
- 70%
- Weight of products transported
- 1122 kg
- Packaging mass
- 2.25 kg
Transport to the building site (A4)
- Fuel type
- Diesel
- Vehicle type
- Single unit truck
- Transport distance
- 40 km
- Capacity utilization
- 70%
- Weight of products transported
- 1122 kg
- Packaging mass
- 2.25 kg
End of life (C1-C4)
- Collected with mixed construction waste
- 1122 kg
- Product or material for final disposal
- 1122 kg
Product description
GlasRoc® Sheathing Infinaé™ CarbonLow™ is an advanced exterior drywall sheathing panel engineered for sustainability and durability.
Available in 1/2" (12.7 mm) and 5/8" Type X (15.9 mm) thicknesses, the panel incorporates a non-combustible gypsum core reinforced with fibreglass face and back mats. This advanced construction provides exceptional strength, dimensional stability, and resistance to moisture, mould, and fire. Similar to the proven technology used in GlasRoc® specialty gypsum products, the embedded fibreglass mat reinforcement enhances durability and helps maintain panel integrity, even when exposed to challenging environmental conditions.
Designed for exterior sheathing and soffit applications, GlasRoc Infinaé CarbonLow is approved for use in UL/ULC fire-rated assemblies, and is compatible with EIFS, stucco systems, traditional cladding, and air barrier assemblies. It is GREENGUARD Gold certified and meets key building codes including IBC, IRC, and NBCC.
Recommended uses include commercial and residential projects with sustainability goals or lower carbon emission requirements. It is a tested air barrier material per ASTM E2178 and can be used in conjunction with air barrier components as part of an assembly per ASTM E2357. It is also approved as a substrate for major EIFS manufacturers, stucco systems, exterior ceilings, soffits, and curved applications.
Interpretation
Based on the results of the life cycle assessment model, the environmental impacts of GlasRoc® Sheathing Infinaé™ CarbonLow™ are primarily driven by the raw material, installation, and raw material transportation life cycle stages. Raw materials account for approximately 47% of the product's Global Warming Potential, with the glass mat representing the largest contributor within the raw material stage due to its energy-intensive production requirements.
Installation is also a notable contributor to the overall cradle-to-grave environmental impacts. In accordance with the applicable Product Category Rules (PCR), a 10% installation waste scenario is applied when actual installation data are unavailable. Because installation practices can vary significantly among contractors and project types, CertainTeed has limited influence over installation-related impacts. However, the use of internally recycled gypsum helps reduce overall environmental burdens by decreasing the demand for virgin raw materials and associated upstream emissions.
Although the manufacturing stage (A3) contributes a relatively small share of the product's total cradle-to-grave GWP, it represents the primary opportunity for impact reduction because it is directly controlled by the manufacturer. The reduction in environmental impacts is primarily driven by the transition from fossil fuel-based manufacturing to electrified production powered by renewable electricity. By replacing natural gas with hydroelectricity in Québec, the project significantly reduces direct (Scope 1) emissions associated with energy-intensive manufacturing processes.
Additional reductions are achieved through the implementation of multiple heat recovery systems, enhanced energy-efficient plant design, and advanced process control strategies that collectively reduce energy consumption and optimize operational performance. Together, these initiatives are expected to improve manufacturing energy efficiency resulting in substantial reductions in embodied carbon while maintaining product quality, durability, and production capacity.
LCIA results are relative expressions and do not predict impacts on category endpoints, the exceeding of thresholds, safety margins or risks. EPDs are comparable only when they follow the same PCR, functional unit and system boundary. The full EPD (PDF) contains the methodology, scenario assumptions and verification statement.