Environmental Product Declaration
STRONGIRT®
by Strongwell
Environmental Product Declaration (EPD) for STRONGIRT®, manufactured by Strongwell. Declaration SmartEPD-2025-075-0548-01, prepared according to EPD International PCR for Construction Products 2019:14 (EN 15804:A2:2019/AC:2021) v1.3.4, valid until June 20, 2030.
- Declared unit
- 1 kg of product Strongwell produces a large number of sizes of STRONGIRT® varying in depth and thickness to accommodate a range of insulation thicknesses. Since the composition of STRONGIRT® material is consistent regardless of the dimensions of the product size, these amounts may be used to normalize the results within this report to a specific STRONGIRT® product.
- Valid until
- June 20, 2030
- PCR
- EPD International PCR for Construction Products 2019:14 (EN 15804:A2:2019/AC:2021) v1.3.4
Declaration details
- Manufacturer
- Strongwell
- Program operator
- Smart EPD
- Declaration number
- SmartEPD-2025-075-0548-01
- Date of issue
- June 20, 2025
- Valid until
- June 20, 2030
- Product category rules (PCR)
- EPD International PCR for Construction Products 2019:14 (EN 15804:A2:2019/AC:2021) v1.3.4 (version 1.3.4)
- Standard
- ISO 14025:2006 and EN 15804:2012+A2:2019/AC:2021
- Declared unit
- 1 kg of product Strongwell produces a large number of sizes of STRONGIRT® varying in depth and thickness to accommodate a range of insulation thicknesses. Since the composition of STRONGIRT® material is consistent regardless of the dimensions of the product size, these amounts may be used to normalize the results within this report to a specific STRONGIRT® product.
- System boundary
- Cradle to grave (A1 - A3, A4, A5, B1 - B7, C1 - C4, D)
- Product specificity
- Product Specific
- Manufacturing specificity
- Facility Specific
- Manufacturing plant
- Strongwell Bristol, VA Plant (400 Commonwealth Ave, Bristol, Virginia 24201, USA)
- Product category
- Cladding
- Verifier
- Terrie Boguski
- LCA software
- SimaPro 9.6
- Program instructions
- Smart EPD General Program Instructions v.2.0, March 2025
Life cycle assessment results
Results per 1 kg of product Strongwell produces a large number of sizes of STRONGIRT® varying in depth and thickness to accommodate a range of insulation thicknesses. Since the composition of STRONGIRT® material is consistent regardless of the dimensions of the product size, these amounts may be used to normalize the results within this report to a specific STRONGIRT® product..
Environmental Impact Assessment Results
| Indicator | Unit | A1 | A2 | A3 | A1-A3 | A4 | A5 | B1 | B2 | B3 | B4 | B5 | B6 | B7 | C1 | C2 | C3 | C4 | D |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| GWP-total | kg CO2 eq | 2.11e+0 | 2.73e-1 | 6.80e-1 | 3.07e+0 | 1.85e-1 | 8.10e-3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2.66e-3 | 4.65e-3 | 0 | 9.54e-3 | 0 |
| GWP-fossil | kg CO2 eq | 2.06e+0 | 2.73e-1 | 6.80e-1 | 3.02e+0 | 1.85e-1 | 5.61e-2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2.66e-3 | 4.65e-3 | 0 | 9.54e-3 | 0 |
| GWP-biogenic | kg CO2 eq | 5.11e-2 | 0 | 0 | 5.11e-2 | 0 | -4.80e-2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| ODP | kg CFC11 eq | 1.34e-8 | 7.51e-10 | 8.46e-11 | 1.43e-8 | 5.09e-10 | 9.93e-12 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2.18e-13 | 1.28e-11 | 0 | 2.64e-11 | 0 |
| AP | mol H+ eq | 6.63e-3 | 8.91e-4 | 4.91e-3 | 1.24e-2 | 6.04e-4 | 2.05e-4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1.53e-5 | 1.52e-5 | 0 | 6.94e-5 | 0 |
| PM | disease incidence | 8.24e-8 | 8.79e-9 | 3.15e-8 | 1.23e-7 | 5.96e-9 | 1.62e-9 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1.08e-10 | 1.50e-10 | 0 | 2.55e-9 | 0 |
| IRP | kBq U235 eq | 3.19e-6 | 5.16e-20 | 5.45e-21 | 3.19e-6 | 3.50e-20 | 8.98e-7 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1.39e-23 | 8.80e-22 | 0 | 1.82e-21 | 0 |
| POCP | kg NMVOC eq | 5.17e-3 | 1.24e-3 | 2.64e-3 | 9.06e-3 | 8.43e-4 | 1.60e-4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6.97e-6 | 2.12e-5 | 0 | 9.71e-5 | 0 |
| EP-fw | kg P eq | 3.67e-7 | 6.93e-8 | 1.18e-8 | 4.48e-7 | 4.70e-8 | 1.18e-8 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4.61e-11 | 1.18e-9 | 0 | 2.44e-9 | 0 |
| EP-marine | kg N eq | 1.62e-3 | 4.36e-4 | 6.51e-4 | 2.71e-3 | 2.95e-4 | 5.56e-5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2.38e-6 | 7.43e-6 | 0 | 3.49e-5 | 0 |
| EP-terrestrial | mol N eq | 1.77e-2 | 4.78e-3 | 7.12e-3 | 2.96e-2 | 3.24e-3 | 6.06e-4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2.60e-5 | 8.15e-5 | 0 | 3.82e-4 | 0 |
| SQI | dimensionless | 1.10e-1 | 0 | 0 | 1.10e-1 | 0 | 4.30e-4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| WDP | m3 world eq deprived | 3.04e-2 | 1.72e-4 | 2.20e-3 | 3.28e-2 | 1.16e-4 | 5.64e-3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1.34e-5 | 2.93e-6 | 0 | 6.04e-6 | 0 |
| ADP-fossil | MJ, net calorific value | 2.19e+1 | 3.21e+0 | 7.21e+0 | 3.23e+1 | 2.18e+0 | 3.89e-1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3.24e-2 | 5.48e-2 | 0 | 1.13e-1 | 0 |
| ADP-minerals&metals | kg Sb eq | 5.33e-6 | 0 | 0 | 5.33e-6 | 0 | -2.74e-7 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| ETP-fw | CTUe | 1.21e+0 | 8.40e-3 | 1.22e-1 | 1.34e+0 | 5.70e-3 | 6.52e-2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5.80e-4 | 1.43e-4 | 0 | 3.28e-4 | 0 |
| HTP-c | CTUh | 2.49e-10 | 1.95e-11 | 6.05e-10 | 8.73e-10 | 1.33e-11 | 3.25e-12 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 7.08e-14 | 3.33e-13 | 0 | 1.45e-12 | 0 |
| HTP-nc | CTUh | 5.19e-9 | 2.80e-10 | 1.66e-9 | 7.14e-9 | 1.90e-10 | 1.45e-10 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4.87e-12 | 4.77e-12 | 0 | 1.02e-11 | 0 |
Resource Use Indicators
| Indicator | Unit | A1 | A2 | A3 | A1-A3 | A4 | A5 | B1 | B2 | B3 | B4 | B5 | B6 | B7 | C1 | C2 | C3 | C4 | D |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PERE | MJ | 1.25e+0 | 1.07e-2 | 1.63e-2 | 1.28e+0 | 7.28e-3 | 7.26e-3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5.40e-3 | 1.83e-4 | 0 | 3.78e-4 | 0 |
| PERM | MJ | 1.83e-2 | 0 | 0 | 1.83e-2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| PERT | MJ | 1.27e+0 | 1.07e-2 | 1.63e-2 | 1.30e+0 | 7.28e-3 | 7.26e-3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5.40e-3 | 1.83e-4 | 0 | 3.78e-4 | 0 |
| PENRE | MJ | 2.55e+1 | 3.50e+0 | 1.17e+1 | 4.07e+1 | 2.37e+0 | 7.61e-1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4.54e-2 | 5.97e-2 | 0 | 1.23e-1 | 0 |
| PENRM | MJ | 1.53e+1 | 0 | 0 | 1.53e+1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| PENRT | MJ | 4.08e+1 | 3.50e+0 | 1.17e+1 | 5.60e+1 | 2.37e+0 | 7.61e-1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4.54e-2 | 5.97e-2 | 0 | 1.23e-1 | 0 |
| SM | kg | 1.10e-3 | 0 | 0 | 1.10e-3 | 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 | 0 | 0 | 0 | 0 |
| NRSF | MJ | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| FW | m3 | 1.05e-2 | 1.76e-4 | 1.52e-4 | 1.08e-2 | 1.19e-4 | 8.99e-5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2.16e-5 | 2.99e-6 | 0 | 6.17e-6 | 0 |
Waste and Output Flow Indicators
| Indicator | Unit | A1 | A2 | A3 | A1-A3 | A4 | A5 | B1 | B2 | B3 | B4 | B5 | B6 | B7 | C1 | C2 | C3 | C4 | D |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| HWD | kg | 2.16e-4 | 0 | 0 | 2.16e-4 | 0 | -1.76e-10 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| NHWD | kg | 3.43e-1 | 3.51e-3 | 8.45e-2 | 4.31e-1 | 2.38e-3 | 3.87e-3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2.02e-4 | 5.98e-5 | 0 | 1.02e+0 | 0 |
| RWD | kg | 2.86e-13 | 0 | 0 | 2.86e-13 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| CRU | kg | 0 | 0 | 0 | 0 | 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 | 0 | 0 | 0 | 0 |
| MER | kg | 0 | 0 | 0 | 0 | 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 | 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 |
|---|---|---|
| Unsaturated Polyester Resin | U.S. | 34.2 |
| Styrene | U.S. | 0.6 |
| Glass Fibers | U.S. | 56.2 |
| Aluminum Trihydrate | U.S. | 7.8 |
| Other Materials | U.S. | 1.2 |
| Packaging material | Origin | Mass (kg) |
|---|---|---|
| Cardboard | U.S. | 0.0022 |
| Wooden Pallet | U.S. | 0.025 |
| Stretch Wrap | U.S. | 0.0006 |
| Biogenic carbon content | kg C per kg |
|---|---|
| Biogenic carbon content in product | 0 |
| Biogenic carbon content in accompanying packaging | 0.013 |
Hazardous substances
N/A
Scenarios
Transport to the building site (A4)
- Fuel type
- Diesel
- Vehicle type
- Combination Truck
- Transport distance
- 2027 km
- Capacity utilization
- 50%
- Weight of products transported
- 1 kg
- Packaging mass
- 0.0278 kg
End of life (C1-C4)
- Collected with mixed construction waste
- 1.0191 kg
- Landfill
- 1.0191 kg
- Product or material for final disposal
- 1 kg
Product description
Strongwell’s STRONGIRT® is an all-FRP continuous insulation (CI) cladding attachment support system. This fiberglass pultruded composite uses a custom fire-retardant resin system and unique laminate design to offer superior pull out strength, excellent thermal efficiency, and the ability to work with any non-proprietary insulation (no routing or fabricating of rigid insulation is required). The geometry of STRONGIRT® offers self-draining to clear rainwater, and weep holes can be pre-fabricated or added in the field for additional drainage needs. The product has been engineered for strength and stiffness to support cladding, insulation, and wind loads, while offering a simple, durable, cost-effective solution for installers. Although the STRONGIRT® cladding carries a warranty of 10 years, it is expected to last the lifetime of the structure on which it is installed.
Interpretation
The figure below provides an illustration of the impact results by percentage of module. As can be seen in the figure, the greatest part of the impact results come from the incoming materials (A1). A1 accounts for at least 50% of the total results for all impact categories except one, HTP-C. This is due to some VOC releases at the plant, stemming from the use of the diluent in the composite. The emissions from modules A2 and A4 are mostly due to the combustion of fuels in trucks to transport incoming materials or the product to the use site.
The greatest percentage of GWP-total is due to the cradle-to-incoming materials at 63 percent of the total system, mainly from the glass fiber and unsaturated polyester resin. The STRONGIRT® pultrusion plant releases 21 percent of the GWP-total, which is due overall to the fuels used to create electricity for the plant. The transportation of the incoming materials and distribution of the product comprise much of the remaining GWP-total; while the end-of-life module accounts for less than 1 percent of the total GWP.
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.