Environmental Product Declaration
Stonseal SK6
by Stonhard
Environmental Product Declaration (EPD) for Stonseal SK6, manufactured by Stonhard. Declaration SmartEPD-2025-067-0483-01, prepared according to NSF PCR for Resinous Floor Coatings, valid until May 16, 2030.
- Functional unit
- 1 m2 of covered and protected flooring surface for a period of 60 years of product
- Valid until
- May 16, 2030
- PCR
- NSF PCR for Resinous Floor Coatings
Declaration details
- Manufacturer
- Stonhard
- Program operator
- Smart EPD
- Declaration number
- SmartEPD-2025-067-0483-01
- Date of issue
- May 16, 2025
- Valid until
- May 16, 2030
- Product category rules (PCR)
- NSF PCR for Resinous Floor Coatings (version 1e)
- Standard
- ISO 14025:2006 and ISO 21930:2017
- Functional unit
- 1 m2 of covered and protected flooring surface for a period of 60 years of product
- System boundary
- Cradle to grave (A1, A2, A3, A4, A5, B2, B4, C1, C2, C3, C4, D)
- Product specificity
- Product Specific
- Manufacturing plants
- Stonhard Fort Wayne (Fort Wayne, IN, USA); Stonhard Maple Shade (Maple Shade, NJ, USA)
- Product category
- Finishes › Flooring › OtherFlooring
- Product service life
- 60 years
- Verifier
- Rifat Karim, Independent Consultant
- LCA software
- SimaPro 9.5
- Program instructions
- Smart EPD General Program Instructions v.2.0, March 2025
Life cycle assessment results
Results per 1 m2 of covered and protected flooring surface for a period of 60 years of product.
Environmental Impact Assessment Results
| Indicator | Unit | A1-A3 | A4 | A5 | B1 | B2 | B3 | B4 | B5 | B6 | B7 | C1 | C2 | C3 | C4 | D |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| GWP-total | kg CO2-eq | 7.26e-1 | 1.94e-1 | 1.84e-2 | ND | 1.23e+1 | ND | 1.03e+1 | ND | ND | ND | 0 | 4.57e-3 | 9.60e-2 | 2.69e-1 | -4.42e-1 |
| ODP | kg CFC-11 eq | 1.53e-7 | 3.33e-9 | 3.12e-9 | ND | 3.69e-7 | ND | 1.75e-6 | ND | ND | ND | 0 | 7.84e-11 | 6.56e-10 | 7.36e-9 | -1.32e-8 |
| AP | kg SO2 eq | 2.89e-3 | 6.20e-4 | 7.03e-5 | ND | 4.68e-2 | ND | 3.94e-2 | ND | ND | ND | 0 | 1.46e-5 | 6.29e-5 | 9.30e-4 | -2.36e-3 |
| EP | kg N eq | 2.09e-3 | 1.71e-4 | 4.53e-5 | ND | 5.75e-2 | ND | 2.54e-2 | ND | ND | ND | 0 | 4.02e-6 | 4.07e-5 | 9.27e-4 | -1.22e-3 |
| POCP | kg O3 eq | 4.49e-2 | 1.42e-2 | 1.18e-3 | ND | 6.48e-1 | ND | 6.63e-1 | ND | ND | ND | 0 | 3.34e-4 | 8.27e-4 | 1.51e-2 | -2.72e-2 |
| Indicator | Unit | A1-A3 | A4 | A5 | B1 | B2 | B3 | B4 | B5 | B6 | B7 | C1 | C2 | C3 | C4 | D |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| GWP-total | kg CO2-eq | 7.26e-1 | 1.94e-1 | 1.84e-2 | ND | 1.23e+1 | ND | 1.03e+1 | ND | ND | ND | 0 | 4.57e-3 | 9.60e-2 | 2.69e-1 | -4.42e-1 |
| ODP | kg CFC-11 eq | 1.53e-7 | 3.33e-9 | 3.12e-9 | ND | 3.69e-7 | ND | 1.75e-6 | ND | ND | ND | 0 | 7.84e-11 | 6.56e-10 | 7.36e-9 | -1.32e-8 |
| AP | kg SO2 eq | 2.89e-3 | 6.20e-4 | 7.03e-5 | ND | 4.68e-2 | ND | 3.94e-2 | ND | ND | ND | 0 | 1.46e-5 | 6.29e-5 | 9.30e-4 | -2.36e-3 |
| EP | kg N eq | 2.09e-3 | 1.71e-4 | 4.53e-5 | ND | 5.75e-2 | ND | 2.54e-2 | ND | ND | ND | 0 | 4.02e-6 | 4.07e-5 | 9.27e-4 | -1.22e-3 |
| POCP | kg O3 eq | 4.49e-2 | 1.42e-2 | 1.18e-3 | ND | 6.48e-1 | ND | 6.63e-1 | ND | ND | ND | 0 | 3.34e-4 | 8.27e-4 | 1.51e-2 | -2.72e-2 |
Resource Use Indicators
| Indicator | Unit | A1-A3 | A4 | A5 | B1 | B2 | B3 | B4 | B5 | B6 | B7 | C1 | C2 | C3 | C4 | D |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| RPRE | MJ | 4.49e-1 | 2.69e-2 | 9.52e-3 | ND | 6.11e+0 | ND | 5.34e+0 | ND | ND | ND | 0 | 6.32e-4 | 2.01e-3 | 6.84e-2 | -3.79e-1 |
| RPRM | MJ | 1.28e-1 | 8.89e-3 | 2.73e-3 | ND | 1.01e+2 | ND | 1.53e+0 | ND | ND | ND | 0 | 2.09e-4 | 5.13e-4 | 9.80e-1 | -5.41e-2 |
| RPRT | MJ | 5.77e-1 | 3.58e-2 | 1.23e-2 | ND | 1.07e+2 | ND | 6.87e+0 | ND | ND | ND | 0 | 8.41e-4 | 2.52e-3 | 1.05e+0 | -4.33e-1 |
| NRPRE | MJ | 1.25e+1 | 2.82e+0 | 3.07e-1 | ND | 1.76e+2 | ND | 1.72e+2 | ND | ND | ND | 0 | 6.63e-2 | 4.30e-1 | 3.00e+0 | -4.42e+0 |
| NRPRM | MJ | 6.61e-4 | 4.86e-5 | 1.42e-5 | ND | 2.26e-2 | ND | 7.96e-3 | ND | ND | ND | 0 | 1.14e-6 | 1.67e-6 | 1.42e-4 | -1.57e-4 |
| NRPRT | MJ | 1.25e+1 | 2.82e+0 | 3.07e-1 | ND | 1.76e+2 | ND | 1.72e+2 | ND | ND | ND | 0 | 6.63e-2 | 4.30e-1 | 3.00e+0 | -4.42e+0 |
| ADPF | MJ | 1.46e+0 | 3.96e-1 | 3.71e-2 | ND | 2.07e+1 | ND | 2.08e+1 | ND | ND | ND | 0 | 9.32e-3 | 6.40e-2 | 1.85e-1 | -2.66e-1 |
| FW | m3 | 7.89e-3 | 3.69e-4 | 1.65e-4 | ND | 2.14e+0 | ND | 9.27e-2 | ND | ND | ND | 0 | 8.67e-6 | 4.25e-5 | 1.29e-3 | -2.80e-3 |
| RE | MJ | 0 | 0 | 0 | ND | 0 | ND | 0 | ND | ND | ND | 0 | 0 | 0 | 0 | 0 |
| RSF | MJ | 0 | 0 | 0 | ND | 0 | ND | 0 | ND | ND | ND | 0 | 0 | 0 | 0 | 0 |
| NRSF | MJ | 0 | 0 | 0 | ND | 0 | ND | 0 | ND | ND | ND | 0 | 0 | 0 | 0 | 0 |
| SM | kg | 0 | 0 | 0 | ND | 0 | ND | 0 | ND | ND | ND | 0 | 0 | 0 | 0 | 0 |
| Indicator | Unit | A1-A3 | A4 | A5 | B1 | B2 | B3 | B4 | B5 | B6 | B7 | C1 | C2 | C3 | C4 | D |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| RPRE | MJ | 4.49e-1 | 2.69e-2 | 9.52e-3 | ND | 6.11e+0 | ND | 5.34e+0 | ND | ND | ND | 0 | 6.32e-4 | 2.01e-3 | 6.84e-2 | -3.79e-1 |
| RPRM | MJ | 1.28e-1 | 8.89e-3 | 2.73e-3 | ND | 1.01e+2 | ND | 1.53e+0 | ND | ND | ND | 0 | 2.09e-4 | 5.13e-4 | 9.80e-1 | -5.41e-2 |
| RPRT | MJ | 5.77e-1 | 3.58e-2 | 1.23e-2 | ND | 1.07e+2 | ND | 6.87e+0 | ND | ND | ND | 0 | 8.41e-4 | 2.52e-3 | 1.05e+0 | -4.33e-1 |
| NRPRE | MJ | 1.25e+1 | 2.82e+0 | 3.07e-1 | ND | 1.76e+2 | ND | 1.72e+2 | ND | ND | ND | 0 | 6.63e-2 | 4.30e-1 | 3.00e+0 | -4.42e+0 |
| NRPRM | MJ | 6.61e-4 | 4.86e-5 | 1.42e-5 | ND | 2.26e-2 | ND | 7.96e-3 | ND | ND | ND | 0 | 1.14e-6 | 1.67e-6 | 1.42e-4 | -1.57e-4 |
| NRPRT | MJ | 1.25e+1 | 2.82e+0 | 3.07e-1 | ND | 1.76e+2 | ND | 1.72e+2 | ND | ND | ND | 0 | 6.63e-2 | 4.30e-1 | 3.00e+0 | -4.42e+0 |
| ADPF | MJ | 1.46e+0 | 3.96e-1 | 3.71e-2 | ND | 2.07e+1 | ND | 2.08e+1 | ND | ND | ND | 0 | 9.32e-3 | 6.40e-2 | 1.85e-1 | -2.66e-1 |
| FW | m3 | 7.89e-3 | 3.69e-4 | 1.65e-4 | ND | 2.14e+0 | ND | 9.27e-2 | ND | ND | ND | 0 | 8.67e-6 | 4.25e-5 | 1.29e-3 | -2.80e-3 |
| RE | MJ | 0 | 0 | 0 | ND | 0 | ND | 0 | ND | ND | ND | 0 | 0 | 0 | 0 | 0 |
| RSF | MJ | 0 | 0 | 0 | ND | 0 | ND | 0 | ND | ND | ND | 0 | 0 | 0 | 0 | 0 |
| NRSF | MJ | 0 | 0 | 0 | ND | 0 | ND | 0 | ND | ND | ND | 0 | 0 | 0 | 0 | 0 |
| SM | kg | 0 | 0 | 0 | ND | 0 | ND | 0 | ND | ND | ND | 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 | D |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| HWD | kg | 2.21e-3 | 0 | 4.41e-5 | ND | 0 | ND | 2.48e-2 | ND | ND | ND | 0 | 0 | 2.65e-2 | 1.32e+0 | 0 |
| NHWD | kg | 4.02e-3 | 0 | 1.65e-3 | ND | 0 | ND | 6.24e-2 | ND | ND | ND | 0 | 0 | 0 | 0 | 0 |
| MR | kg | 2.21e-3 | 0 | 2.12e-3 | ND | 0 | ND | 4.77e-2 | ND | ND | ND | 0 | 0 | 0 | 0 | -5.15e-2 |
| MER | kg | 0 | 0 | 0 | ND | 0 | ND | 0 | ND | ND | ND | 0 | 0 | 0 | 0 | 0 |
| ILLRW | m3 | 0 | 0 | 0 | ND | 0 | ND | 0 | ND | ND | ND | 0 | 0 | 0 | 0 | 0 |
| HLLRW | m3 | 0 | 0 | 0 | ND | 0 | ND | 0 | ND | ND | ND | 0 | 0 | 0 | 0 | 0 |
| Indicator | Unit | A1-A3 | A4 | A5 | B1 | B2 | B3 | B4 | B5 | B6 | B7 | C1 | C2 | C3 | C4 | D |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| HWD | kg | 2.21e-3 | 0 | 4.41e-5 | ND | 0 | ND | 2.48e-2 | ND | ND | ND | 0 | 0 | 2.65e-2 | 1.32e+0 | 0 |
| NHWD | kg | 4.02e-3 | 0 | 1.65e-3 | ND | 0 | ND | 6.24e-2 | ND | ND | ND | 0 | 0 | 0 | 0 | 0 |
| MR | kg | 2.21e-3 | 0 | 2.12e-3 | ND | 0 | ND | 4.77e-2 | ND | ND | ND | 0 | 0 | 0 | 0 | -5.15e-2 |
| MER | kg | 0 | 0 | 0 | ND | 0 | ND | 0 | ND | ND | ND | 0 | 0 | 0 | 0 | 0 |
| ILLRW | m3 | 0 | 0 | 0 | ND | 0 | ND | 0 | ND | ND | ND | 0 | 0 | 0 | 0 | 0 |
| HLLRW | m3 | 0 | 0 | 0 | ND | 0 | ND | 0 | ND | ND | ND | 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 | D |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Bio Carbon Removal from Product | kg C | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Bio Carbon Emission from Product | kg C | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Bio Carbon Removal from Packaging | kg C | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Bio Carbon Emission from Packaging | kg C | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Bio Carbon Emission from Waste during Manufacturing (renewable source) | kg C | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Calcination Carbon Removal | kg C | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Carbonation Carbon Emission | kg C | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Carbon Emission from Waste during Manufacturing (non-renewable source) | kg C | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Indicator | Unit | A1-A3 | A4 | A5 | B1 | B2 | B3 | B4 | B5 | B6 | B7 | C1 | C2 | C3 | C4 | D |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Bio Carbon Removal from Product | kg C | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Bio Carbon Emission from Product | kg C | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Bio Carbon Removal from Packaging | kg C | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Bio Carbon Emission from Packaging | kg C | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Bio Carbon Emission from Waste during Manufacturing (renewable source) | kg C | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Calcination Carbon Removal | kg C | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Carbonation Carbon Emission | kg C | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Carbon Emission from Waste during Manufacturing (non-renewable source) | kg C | 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 |
|---|---|---|
| Amine | < 10 | |
| Isocyanate | 63 - 95 | |
| Polyol | 14 - 21 | |
| Resin | < 10 |
| Packaging material | Origin | Mass (kg) |
|---|---|---|
| Aluminium foil | 0 |
| Biogenic carbon content | kg C per m2 of covered and protected flooring surface for a period of 60 years |
|---|---|
| Biogenic carbon content in product | 0 |
| Biogenic carbon content in accompanying packaging | 0 |
Hazardous substances
hexamethylene diisocyanate, oligomers (28182-81-2)
dibutyltin dilaurate (77-58-7)
Hexamethylene diisocyanate (822-06-0)
benzene, 1-chloro-4-(trifluoromethyl)- (98-56-6)
(R)-p-mentha-1,8-diene (5989-27-5)
1,3-benzenediol,4-[4,6-bis(2,4 (153519-44-9)
Naphtha (petroleum), heavy alkylate (64741-65-7)
1-methoxypropan-2-ol (107-98-2)
Product description
Stonseal SK6 is a two-component, UV-resistant, clear, aliphatic, polyurethane/polyurea sealer. It is formulated to increaseabrasion, chemical and stain resistance while improving cleanability. Stonseal SK6 is easily applied and hardens to an attractive, smooth, glass-like, high-gloss finish.
Interpretation
Raw materials are sourced from suppliers, transported to manufacturing facilities, and mixed to produce products.
The product stage (A1-A3) has the highest environmental impact, especially due to raw material production and energy use, impact amplified in the use phase (B4) from recoatings.
The Market scenario shows higher use-phase impacts due to a shorter estimatedservice life (ESL).
End-of-life impacts are relatively low, as products are assumed to be landfilled with building demolition waste.
Switching to renewable energy is advised for products with high manufacturing energy demands.
The manufacturer should explore lower-impact raw materials and work with suppliers using sustainable methods or renewable energy to enhance product sustainability.
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.