
SOPREMA Inc.SOPRASEAL LM 200 S and SOPRASEAL LM 200 T Liquid Applied Air Barrier MembraneENVIRONMENTAL PRODUCTDECLARATIONISO 14025:2006 and ISO 21930:2017SOPREMA is pleased to present this Environmental Product Declaration (EPD) for the SOPRASEAL LM 200 S and SOPRASEAL LM 200 T. This EPD was developed in compliance with ISO 14025 and ISO 21930 and has been verified by Lindita Bushi, Ph.D., Athena Sustainable Materials Institute. The LCA and the EPD were prepared by Vertima Inc. The EPD includes cradle-to-gate life cycle assessment (LCA) results. For more information about SOPREMA, visit www.soprema.ca.For any explanatory material regarding this EPD, please contact the program operator.

Page 2SOPREMA Inc. | GENERAL INFORMATION1. GENERAL INFORMATIONEPD GENERAL INFORMATIONProgram OperatorASTM International100 Barr Harbor Drive, West Conshohocken, PA 19428www.astm.orgDeclared ProductsSOPRASEAL LM 200 SSOPRASEAL LM 200 TEPD Registration Number EPD Date of Issue EPD Period of Validity EPD Recipient OrganizationSOPREMA Inc.1688, Jean-Berchmans-Michaud
Drummondville (Quebec) J2C 8E9 Canadawww.soprema.caPCR GENERAL INFORMATIONReference PCRWater-Resistive and Air BarriersASTM InternationalSeptember 2017 to September 2023 (validity period)The PCR review was conducted by:Thomas P. Gloria (chair)Industrial Ecology Consultantst.gloria@industrial-ecology.comGraham Finch RDH Builiding Science, Inc.Paul H. Shipp USG CorporationThis LCA and EPD were prepared by:Chantal Lavigne, M.A ScVertima Inc.www.vertima.caThis EPD and LCA were independently verified in accordance with ISO 14025:2006, ISO 14040:2006, ISO 14044:2006 and ISO 21930:2017, as well as the ASTM International PCR “Water-Resistive and Air Barriers”InternalX External_____________________________ Lindita Bushi, Ph.D.Athena Sustainable Materials InstituteEPD Type/Scope and Declared UnitProduct specific cradle-to-gate EPD with declared unit of 1 m2 of membraneYear of Reported Manufacturer Primary Data2021Geographical ScopeNorth AmericaLCA SoftwareOpenLCA v.1.11.0LCI DatabasesEcoinvent 3.9.1 and
US LCILCIA MethodologyTRACI 2.1, CED LHV v1.0 and HHV v.1.01EPD 508July 20, 2023July 19, 2028

Environmental Product Declaration (EPD) # 508 SOPREMA | GENERAL INFORMATION Page 3 LIMITATIONS Environmental declarations from different programs (ISO 14025) may not be comparable.[1] Furthermore, “comparison of construction products using an EPD shall be carried out in the context of the construction works. Consequently, comparisons of the environmental performance of construction products using the EPD shall consider all the relevant information modules over the full life cycle of the products within the construction works. Such a comparison requires scenarios in the construction works context. The provision of ISO 14025:2066, 6.7.2 on comparability shall apply.”[2] In sum, “EPDs based on a declared unit shall not be used for comparisons.”[3] The EPDs prepared from this report are not comparable as they are cradle-to-gate EPDs. [4] [Photo courtesy of SOPREMA]

Environmental Product Declaration (EPD) # 508 SOPREMA | PRODUCT SYSTEM DESCRIPTION Page 4 2. PRODUCT SYSTEM DESCRIPTION SOPREMA is an international manufacturer specializing in the production of innovative products for waterproofing, insulation, soundproofing and vegetated solutions for the roofing, building envelope and civil engineering sectors. SOPREMA manufactures several types of water barriers and air barriers. 2.1. PRODUCT DESCRIPTION SOPRASEAL LM 200 S and SOPRASEAL LM 200 T1 are water-based, single-component, liquid air/vapour barriers made of synthetic rubbers for use on walls. SOPRASEAL LM 200 T is also used as a rigid insulation adhesive. SOPRASEAL LM 200 S AND SOPRASEAL LM 200 T liquid air/vapour barrier [Photo courtesy of SOPREMA]. 2.2. TECHNICAL DATA Properties Standards SOPRASEAL LM 200 S Water vapour permeance ASTM E96 (method A) ASTM E96 (method B) 12 ng/Pa•s•m² (0.2 perm) 37 ng/Pa•s•m² (0.6 perm) Air permeability ASTM E2178 < 0.001 L/s•m2 Elongation ASTM D412 240% Air leakage rate classification CAN/ULC S742 A1 (All values are nominal) 1 SOPRASEAL LM 200 S and SOPRASEAL LM 200 T are classified under the Construction Specification Institute (CSI) MasterFormat code 07 27 26 Fluid-Applied Membrane Air Barriers.

Environmental Product Declaration (EPD) # 508 SOPREMA | PRODUCT SYSTEM DESCRIPTION Page 5 Properties Standards SOPRASEAL LM 200 T Water vapour permeance ASTM E96 9th draft 34.2 ng/Pa•s•m2 (0.6 perm) Air permeability ASTM E283 (75 Pa) < 0.0007 L/s•m2 Resistance to gust wind load ASTM E330 (3000 Pa – 10 s) Complies Resistance to sustained wind load ASTM E330 (100 Pa – 1 h) Complies (All values are nominal) 2.3. PROPERTIES OF DECLARED PRODUCT AS DELIVERED Specifications SOPRASEAL LM 200 S SOPRASEAL LM 200 T Colour Purple Blue Specific gravity 1.06 kg/L (8.86 lb/gal) 1.00 kg/L 98.36 lb/gal) Solids by weight 48% 52% More details are available at https://www.soprema.ca/en/products-systems/sopraseal-lm-200-s https://www.soprema.ca/en/products-systems/sopraseal-lm-200-t (All values are nominal) 2.4. MATERIAL COMPOSITION Component/Material SOPRASEAL LM 200 S SOPRASEAL LM 200 T Water 17-22% 12-15% Calcium carbonate filler 10-15% 12-15% Resin dispersion 60-65% 60-65% Plasticizer 2-5% 0.0% Cellulose fibre 0.0% 2-5% Fumed silica 0.0% 2-5% Additives 2-5% 2-5% TOTAL 100.0% 100.0% 2.5. MANUFACTURING Single-component, liquid-applied air and vapour barriers made of synthetic rubbers are manufacturer by blending liquid and solid ingredients under controlled conditions to a desired consistency. The material is then poured into containers.

Environmental Product Declaration (EPD) # 508 SOPREMA | PRODUCT SYSTEM DESCRIPTION Page 6 2.6. PACKAGING Liquid membrane products are packaged in plastic pails and stacked on wooden pallets. The pallets are either protected by a pallet bag or a stretch film on which a label is placed. SOPRASEAL LM 200 S & LM 200 T are further protected with a pallet cover to ensure the pails arrive free of dust and water at the destination. SOPRASEAL LM 200 S & LM 200 T Packaging Materials per DU Packaging Material SOPRASEAL LM 200S SOPRASEAL LM 200T Pallet Wood (kg/m2) 4.69E-02 4.42E-02 Pallet bag, Stretch film LDPE (kg/m2) 1.41E-03 1.33E-03 Pallet labels Paper (kg/m2) 1.01E-03 9.57E-04 Pallet cover PP (kg/m2) 9.05E-04 8.54E-04 Plastic pail and lid HDPE (kg/m2) 1.18E-01 1.12E-01 2.7. PRODUCT INSTALLATION SOPRASEAL LM 200 S & LM 200 T are liquid applied membranes. More precisely, a 2 mm (80 mil) wet coat of SOPRASEAL LM 200 S is sprayed over the whole surface, while a 2.3 mm (90 mil) wet coat of SOPRASEAL LM 200 T is applied over the whole surface with a trowel and brush. Refer to the table below for product coverage and application temperatures. Specifications Coverage Application temperature SOPRASEAL LM 200 S & 200 T 0. 526 m2/l (21.5 ft2/gal) > 2°C (36°F) 2.8. REFERENCE SERVICE LIFE AND CONDITION OF USE For this EPD, the system boundaries encompass a cradle-to-gate scope. Environmental impacts of products in the use phase are excluded from this declaration, per ASTM PCR Water-Resistive and Air Barriers.[3] 2.9. DISPOSAL At their end-of-life, SOPREMA membranes are sent to landfill.

Environmental Product Declaration (EPD) # 508 SOPREMA | LCA CALCULATION RULES Page 7 3. LCA CALCULATION RULES 3.1. DECLARED UNIT The selected declared unit (DU) for this study is 1 m2 of membrane. Description SOPRASEAL LM 200 S SOPRASEAL LM 200 T Declared unit 1 m2 1 m2 Coverage (kg/m2) 2.014 1.900 Product density (kg/l) 1.060 1.000 Coverage rate (m2/l) 0.526 0.526 Dry thickness (mm) 1.000 1.150 Solids content by volume (%) 48% 52% 3.2. PRODUCTION AVERAGE No average is used for the products under study. SOPRASEAL LM 200 S & LM 200 T are produced at a facility located in Quebec (Canada). 3.3. SYSTEM BOUNDARIES According to ASTM's PCR,[3] the LCA modelling system boundaries can be cradle-to-gate, i.e., only cover the production life cycle stage as illustrated in Table 1. Within this life cycle stage, three (3) modules are considered, namely A-1) Extraction and upstream production, A-2) Transport to factory and A-3) Manufacturing. Construction (A-4; A-5), use (B-1 to B-7) and end-of-life (C-1 to C-4) stages are not included in this EPD. Figure 1 present the process flow diagram for SOPREMA’s products. Neither green power nor CO2 credits are used within the scope of this project. Table 1: Description of the system boundary life cycle stages and related information modules PRODUCTION STAGE CONSTRUC-TION PROCESS STAGE USE STAGE END-OF-LIFE STAGE A1 A2 A3 A4 A5 B1 B2 B3 B4 B5 B6 B7 C1 C2 C3 C4 Extraction and Upstream Production Transport to Factory Manufacturing Transport to site Installation Use Maintenance Repair Replacement Refurbishment Operational Energy Use Operational Water UseDeconstruction / Demolition Transport to Waste Processing or Disposal Waste Processing Disposal of Waste X X X MND MND MND MND MND MND MND MND MND MND MND MND MND Key: X = included; MND = module not declared (excluded)

Environmental Product Declaration (EPD) # 508 SOPREMA | LCA CALCULATION RULES Page 8 Figure 1: System Boundaries of Cradle-to-Gate LCA of SOPREMA’s SOPRASEAL LM 200 S & LM 200 T liquid applied membranes. Extraction and upstream production: This module includes the extraction and transformation of raw materials needed to produce the SOPRASEAL LM 200 S & LM 200 T liquid-applied air barrier membranes. Transport to factory: This module includes the transportation of raw materials to the manufacturing facility located in the province of Quebec, Canada. Manufacturing: This stage includes electricity, natural gas and propane consumption as well as production waste, which is sent to the local landfill or hazardous waste treatment. Water entering the composition of the product is considered, but there are no emissions to air, water or soil. Packaging materials to make products ready for shipment, as well as their transport to the manufacturing facility is also covered by this stage.

Environmental Product Declaration (EPD) # 508 SOPREMA | LCA CALCULATION RULES Page 9 3.4. CUT-OFF CRITERIA According to ISO 21930:2017, cut-off rules shall not be applied to hide data. All data shall be included. In the case of insufficient data, the cut-off criteria shall be 1% of energy or 1% of total mass input and 1% of environmental impacts of the unit process. The total cut-off input flows per modules shall be a maximum of 5% energy, mass and environmental impacts. No known flows are deliberately excluded from this EPD. For this EPD, no data on the construction, maintenance or dismantling of the capital assets, daily transport of employees, office work, business trips or other employee activities were included in the model. The model only takes into account the processes associated with infrastructure that are already included in the ecoinvent unit processes. 3.5. ALLOCATION Allocation, if required, shall follow the requirements and guidance of ISO 14044:2006, Section 4.3.4.[3,4] Energy data was provided for the entire manufacturing plants; thus, mass allocation was used to assign the share of energy consumed in the factory to the product under study. Waste processing of the material flows undergoing recycling processes are included up to the system boundary of the end-of-waste state.[2] In other words, a cut-off approach was used as further processing of the recycled material is part of raw material preparation of another product system (open-loop recycling). [Photo courtesy of SOPREMA]

Environmental Product Declaration (EPD) # 508 SOPREMA | LCA CALCULATION RULES Page 10 3.6. DATA SOURCES AND QUALITY REQUIREMENTS Data Quality Parameter Data Quality Discussion Source of manufacturing data Manufacturing data was collected from specific manufacturing facility, which represents 100% of the products’ production. This data included total annual mass and area of products under study: raw materials entering the production of the products under study, losses of materials, transport distance of materials, waste treatment, and product packaging. The data also included electricity consumption for the entire manufacturing facilities as well as total annual production of all products produced. Source of secondary data Background data were taken from the ecoinvent 3.9.1 “cut-off” database.[5] Datasets were selected based on their representativeness of the products’ composing materials. When appropriate, the dataset’s grid mix was changed for the grid mix of the province or country where production takes places. Otherwise, ecoinvent data representative of the global market or “rest-of-the-world” were selected as proxies. Geographical representativeness Electricity consumption is based on the electricity mix provided by the electricity supplier. Geographical correlation of the material composing the product and the selected datasets are largely representative of the same area. When this was not possible, datasets representing a larger geographical area were taken. Temporal representativeness Primary data represents the 2021 production year. Life cycle inventory datasets from ecoinvent are not always published within the last 10 years; nevertheless, ecoinvent remains a reference LCI database. Technological representativeness Primary data, obtained from the manufacturer, is representative of the current technologies and materials used by this company. Completeness All relevant process steps were considered and modelled to satisfy the goal and scope. No known flows were cut off.

Environmental Product Declaration (EPD) # 508 SOPREMA | LCA RESULTS Page 11 4. LIFE CYCLE ASSESSMENT RESULTS 4.1. RESULTS TABLES It should be noted that Life Cycle Impact Assessment (LCIA) results are relative expressions and do not predict impacts on category endpoints, the exceeding of thresholds, safety margins or risks. Environmental Indicator Unit TRACI 2.1 GWP100-AR5(1) Global warming potential kg CO2 eq. GWP100-AR4(2) Global warming potential kg CO2 eq. AP Acidification potential kg SO2 eq. EP Eutrophication potential kg N eq ODP Ozone layer depletion potential kg CFC-11 eq. SFP Smog formation potential kg O3 eq RDP Resource depletion potential – fossil fuels MJ Surplus Resource Use PENR-fossil Primary energy non-renewable, fossil MJ, HHV PENR-nuclear Primary energy non-renewable, nuclear MJ, HHV PER-biomass Primary energy renewable, biomass MJ, HHV PER-swhg Primary energy renewable, solar, wind, hydroelectric and geothermal energy MJ, HHV Material Resources Consumption and Waste NRMR(3) Non-renewable material resources kg RMR(4) Renewable material resources kg NFW(5) Net fresh water L HWD(6) Hazardous waste disposed kg NHWD(7) Non-hazardous waste disposed kg Table Notes – TRACI 2.1 (1) GWP 100, excludes biogenic CO2 removals and emissions associated with biobased products and packaging; 100-year time horizon GWP factors are provided by the IPCC 2013 Fifth Assessment Report (AR5). (2): GWP 100, excludes biogenic CO2 removals and emissions associated with biobased products and packaging; 100-year time horizon GWP factors are provided by the IPCC 2007 Fourth Assessment Report (AR4). Table Notes – Material Resource Consumption and Waste (3): Calculated based on the product’s material input (4): The product does not contain renewable materials in its composition. (5): Represents the use of net freshwater calculated from life cycle inventory results, i.e., water consumption using ReCiPe Midpoint (E) 2016. (6): Calculated from life cycle inventory results, based on datasets classified under "treatment and disposal of hazardous waste." The manufacturer does not generate hazardous waste during the manufacturing process. (7): Calculated from life cycle inventory results, based on waste that is neither "hazardous" nor "radioactive."

Environmental Product Declaration (EPD) # 508 SOPREMA | LCA RESULTS Page 12 Additional Environmental Indicators Unit Resource Use RPRE(1) Renewable primary resources used as energy carrier (fuel) MJ, LHV RPRM(2) Renewable primary resources with energy content used as material MJ, LHV RPRT Renewable primary resources total MJ, LHV NRPRE(3) Non-renewable primary resources used as energy carrier (fuel) MJ, LHV NRPRM(4) Non-renewable primary resources with energy content used as material MJ, LHV NRPRT Non-renewable primary resources total MJ, LHV SM Secondary materials kg RSF Renewable secondary fuels MJ, LHV NRSF Non-renewable secondary fuels MJ, LHV FW(5) Use of net freshwater resources m³ Output Flows and Waste Categories HWD(6) Hazardous waste disposed kg NHWD(7) Non-hazardous waste disposed kg HLRW(8) High-level radioactive waste, conditioned, to final repository m3 ILLRW(9) Intermediate- and low-level radioactive waste, conditioned to final repository m3 CRU Components for re-use kg MFR Materials for recycling kg MER Materials for energy recovery kg EE Exported energy MJ, LHV Table Notes – Resource Use (1): RPRE = RPRT - RPRM, where RPRT is equal to the value for renewable energy obtained using the CED LHV methodology. (2): Calculated as per ACLCA ISO 21930 Guidance, 6.2 Renewable primary resources with energy content used as a material, RPRM. (3): NRPRE = NRPRT - NRPRM, where NRPRT is equal to the value for non-renewable energy obtained using the CED LHV methodology. (4): Calculated as per ACLCA ISO 21930 Guidance, 6.4 Non-renewable primary resources with energy content used as a material, NRPRM. (5): Represents the use of net freshwater calculated from life cycle inventory results, i.e., water consumption using ReCiPe Midpoint (E) 2016. Table Notes – Output Flows and Waste Categories (6): Calculated from life cycle inventory results, based on datasets classified under "treatment and disposal of hazardous waste." The manufacturer does not generate hazardous waste during the manufacturing process. (7): Calculated from life cycle inventory results, based on waste that is neither "hazardous" nor "radioactive." (8): Calculated from life cycle inventory results, based on ecoinvent waste flow "high-level radioactive waste for final repository." (9): Calculated from life cycle inventory results, based on ecoinvent waste flow "low-level radioactive waste for final repository."

Environmental Product Declaration (EPD) # 508 SOPREMA | LCA RESULTS Page 13 SOPRASEAL LM 200 S Environmental Indicator Unit A1 A2 A3 A1 - A3 (per m2) (per m2) (per m2) (per m2) TRACI 2.1 GWP100-AR5(1) kg CO2 eq. 5.85E+00 1.36E+00 2.10E+00 9.31E+00 GWP100-AR4(2) kg CO2 eq. 5.85E+00 1.36E+00 2.06E+00 9.27E+00 AP kg SO2 eq. 1.62E-02 1.08E-02 2.96E-03 3.00E-02 EP kg N eq 2.13E-03 7.71E-04 1.21E-03 4.12E-03 ODP kg CFC-11 eq. 4.46E-08 2.95E-09 3.89E-08 8.65E-08 SFP kg O3 eq 3.05E-01 2.98E-01 4.96E-02 6.53E-01 RDP MJ Surplus 1.92E+01 1.60E+00 9.03E-01 2.17E+01 Resource Use PENR-fossil MJ, HHV 2.00E+02 1.29E+01 3.56E+01 2.49E+02 PENR-nuclear MJ, HHV 4.52E-01 1.18E-03 1.72E+00 2.17E+00 PER-biomass MJ, HHV 3.17E-01 2.60E-03 4.40E-01 7.60E-01 PER-swhg MJ, HHV 1.83E+00 1.98E-02 2.97E+01 3.15E+01 Material Resource Consumption and Waste NRMR(3) kg 2.01E+00 0.00E+00 0.00E+00 2.01E+00 RMR(4) kg 4.03E-03 0.00E+00 0.00E+00 4.03E-03 NFW(5) L 2.23E+01 1.43E-01 1.54E+02 1.77E+02 HWD(6) kg 4.42E-01 7.51E-03 6.55E-01 1.10E+00 NHWD(7) kg 2.40E-01 1.12E-02 1.53E-01 4.05E-01 Table Notes – TRACI 2.1 (1) GWP 100, excludes biogenic CO2 removals and emissions associated with biobased products and packaging; 100-year time horizon GWP factors are provided by the IPCC 2013 Fifth Assessment Report (AR5). (2): GWP 100, excludes biogenic CO2 removals and emissions associated with biobased products and packaging; 100-year time horizon GWP factors are provided by the IPCC 2007 Fourth Assessment Report (AR4). Table Notes – Material Resource Consumption and Waste (3): Calculated based on the product’s material input. (4): Calculated based on the product’s material input. (5): Represents the use of net freshwater calculated from life cycle inventory results, i.e., water consumption using ReCiPe Midpoint (E) 2016. (6): Calculated from life cycle inventory results, based on datasets classified under "treatment and disposal of hazardous waste." The manufacturer does not generate hazardous waste during the manufacturing process. (7): Calculated from life cycle inventory results, based on waste that is neither "hazardous" nor "radioactive."

Environmental Product Declaration (EPD) # 508 SOPREMA | LCA RESULTS Page 14 SOPRASEAL LM 200 S Environmental Indicator Unit A1 A2 A3 A1 - A3 (per m2) (per m2) (per m2) (per m2) Resource Use RPRE(1) MJ, LHV 2.09E+00 2.24E-02 3.01E+01 3.22E+01 RPRM(2) MJ, LHV 6.04E-02 0.00E+00 0.00E+00 6.04E-02 RPRT MJ, LHV 2.15E+00 2.24E-02 3.01E+01 3.23E+01 NRPRE(3) MJ, LHV 1.41E+02 1.16E+01 9.55E+00 1.62E+02 NRPRM(4) MJ, LHV 4.66E+01 0.00E+00 0.00E+00 4.66E+01 NRPRT MJ, LHV 1.88E+02 1.16E+01 9.55E+00 2.09E+02 SM kg 0.00E+00 0.00E+00 0.00E+00 0.00E+00 RSF MJ, LHV 0.00E+00 0.00E+00 0.00E+00 0.00E+00 NRSF MJ, LHV 0.00E+00 0.00E+00 0.00E+00 0.00E+00 FW(5) m³ 2.23E-02 1.43E-04 1.54E-01 1.77E-01 Output Flows and Waste Categories HWD(6) kg 4.42E-01 7.51E-03 6.55E-01 1.10E+00 NHWD(7) kg 2.40E-01 1.12E-02 1.53E-01 4.05E-01 RWD kg 9.60E-08 3.14E-10 1.91E-06 2.00E-06 HLRW(8) m3 2.64E-10 8.65E-13 5.26E-09 5.52E-09 ILLRW(9) m3 3.22E-09 5.13E-12 4.81E-09 8.04E-09 CRU kg 0.00E+00 0.00E+00 0.00E+00 0.00E+00 MFR kg 1.78E-05 0.00E+00 0.00E+00 1.78E-05 MER kg 0.00E+00 0.00E+00 0.00E+00 0.00E+00 EE MJ, LHV 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Table Notes – Resource Use (1): RPRE = RPRT - RPRM, where RPRT is equal to the value for renewable energy obtained using the CED LHV methodology. (2): Calculated as per ACLCA ISO 21930 Guidance, 6.2 Renewable primary resources with energy content used as a material, RPRM. (3): NRPRE = NRPRT - NRPRM, where NRPRT is equal to the value for non-renewable energy obtained using the CED LHV methodology. (4): Calculated as per ACLCA ISO 21930 Guidance, 6.4 Non-renewable primary resources with energy content used as a material, NRPRM. (5): Represents the use of net freshwater calculated from life cycle inventory results, i.e., water consumption using ReCiPe Midpoint (E) 2016. Table Notes – Output Flows and Waste Categories (6): Calculated from life cycle inventory results, based on datasets classified under "treatment and disposal of hazardous waste." The manufacturer does not generate hazardous waste during the manufacturing process. (7): Calculated from life cycle inventory results, based on waste that is neither "hazardous" nor "radioactive." (8): Calculated from life cycle inventory results, based on ecoinvent waste flow "high-level radioactive waste for final repository." (9): Calculated from life cycle inventory results, based on ecoinvent waste flow "low-level radioactive waste for final repository."

Environmental Product Declaration (EPD) # 508 SOPREMA | LCA RESULTS Page 15 SOPRASEAL LM 200 T Environmental Indicator Unit A1 A2 A3 A1 - A3 (per m2) (per m2) (per m2) (per m2) TRACI 2.1 GWP100-AR5(1) kg CO2 eq. 6.28E+00 1.35E+00 1.98E+00 9.61E+00 GWP100-AR4(2) kg CO2 eq. 6.26E+00 1.34E+00 1.95E+00 9.55E+00 AP kg SO2 eq. 1.97E-02 1.09E-02 2.79E-03 3.34E-02 EP kg N eq 3.24E-03 7.77E-04 1.15E-03 5.16E-03 ODP kg CFC-11 eq. 1.03E-03 2.95E-09 3.67E-08 1.03E-03 SFP kg O3 eq 3.55E-01 3.03E-01 4.67E-02 7.05E-01 RDP MJ Surplus 1.83E+01 1.60E+00 8.52E-01 2.08E+01 Resource Use PENR-fossil MJ, HHV 1.97E+02 1.29E+01 3.36E+01 2.44E+02 PENR-nuclear MJ, HHV 1.54E+00 1.18E-03 1.62E+00 3.16E+00 PER-biomass MJ, HHV 2.10E+00 2.58E-03 4.15E-01 2.52E+00 PER-swhg MJ, HHV 2.48E+00 1.96E-02 2.80E+01 3.05E+01 Material Resource Consumption and Waste NRMR(3) kg 1.82E+00 0.00E+00 0.00E+00 1.82E+00 RMR(4) kg 8.17E-02 0.00E+00 0.00E+00 8.17E-02 NFW(5) L 2.52E+01 1.42E-01 1.45E+02 1.71E+02 HWD(6) kg 1.03E+00 7.47E-03 6.17E-01 1.66E+00 NHWD(7) kg 2.92E-01 1.12E-02 1.45E-01 4.48E-01 Table Notes – TRACI 2.1 (1) GWP 100, excludes biogenic CO2 removals and emissions associated with biobased products and packaging; 100-year time horizon GWP factors are provided by the IPCC 2013 Fifth Assessment Report (AR5). (2): GWP 100, excludes biogenic CO2 removals and emissions associated with biobased products and packaging; 100-year time horizon GWP factors are provided by the IPCC 2007 Fourth Assessment Report (AR4). Table Notes – Material Resource Consumption and Waste (3): Calculated based on the product’s material input. (4): Calculated based on the product’s material input. (5): Represents the use of net freshwater calculated from life cycle inventory results, i.e., water consumption using ReCiPe Midpoint (E) 2016. (6): Calculated from life cycle inventory results, based on datasets classified under "treatment and disposal of hazardous waste." The manufacturer does not generate hazardous waste during the manufacturing process. (7): Calculated from life cycle inventory results, based on waste that is neither "hazardous" nor "radioactive."

Environmental Product Declaration (EPD) # 508 SOPREMA | LCA RESULTS Page 16 SOPRASEAL LM 200 T Environmental Indicator Unit A1 A2 A3 A1 - A3 (per m2) (per m2) (per m2) (per m2) Resource Use RPRE(1) MJ, LHV 3.36E+00 2.22E-02 2.84E+01 3.18E+01 RPRM(2) MJ, LHV 1.23E+00 0.00E+00 0.00E+00 1.23E+00 RPRT MJ, LHV 4.59E+00 2.22E-02 2.84E+01 3.30E+01 NRPRE(3) MJ, LHV 1.39E+02 1.15E+01 9.01E+00 1.60E+02 NRPRM(4) MJ, LHV 4.39E+01 0.00E+00 0.00E+00 4.39E+01 NRPRT MJ, LHV 1.83E+02 1.15E+01 9.01E+00 2.04E+02 SM kg 0.00E+00 0.00E+00 0.00E+00 0.00E+00 RSF MJ, LHV 0.00E+00 0.00E+00 0.00E+00 0.00E+00 NRSF MJ, LHV 0.00E+00 0.00E+00 0.00E+00 0.00E+00 FW(5) m³ 2.52E-02 1.42E-04 1.45E-01 1.71E-01 Output Flows and Waste Categories HWD(6) kg 1.03E+00 7.47E-03 6.17E-01 1.66E+00 NHWD(7) kg 2.92E-01 1.12E-02 1.45E-01 4.48E-01 RWD kg 2.55E-07 3.12E-10 1.80E-06 2.06E-06 HLRW(8) m3 7.02E-10 8.61E-13 4.96E-09 5.66E-09 ILLRW(9) m3 4.83E-09 5.10E-12 4.54E-09 9.38E-09 CRU kg 0.00E+00 0.00E+00 0.00E+00 0.00E+00 MFR kg 1.70E-05 0.00E+00 0.00E+00 1.70E-05 MER kg 0.00E+00 0.00E+00 0.00E+00 0.00E+00 EE MJ, LHV 0.00E+00 0.00E+00 0.00E+00 0.00E+00 Table Notes – Resource Use (1): RPRE = RPRT - RPRM, where RPRT is equal to the value for renewable energy obtained using the CED LHV methodology. (2): Calculated as per ACLCA ISO 21930 Guidance, 6.2 Renewable primary resources with energy content used as a material, RPRM. (3): NRPRE = NRPRT - NRPRM, where NRPRT is equal to the value for non-renewable energy obtained using the CED LHV methodology. (4): Calculated as per ACLCA ISO 21930 Guidance, 6.4 Non-renewable primary resources with energy content used as a material, NRPRM. (5): Represents the use of net fresh water calculated from life cycle inventory results, i.e., water consumption using ReCiPe Midpoint (E) 2016. Table Notes – Output Flows and Waste Categories (6): Calculated from life cycle inventory results, based on datasets classified under "treatment and disposal of hazardous waste." The manufacturer does not generate hazardous waste during the manufacturing process. (7): Calculated from life cycle inventory results, based on waste that is neither "hazardous" nor "radioactive." (8): Calculated from life cycle inventory results, based on ecoinvent waste flow "high-level radioactive waste for final repository." (9): Calculated from life cycle inventory results, based on ecoinvent waste flow "low-level radioactive waste for final repository."

Environmental Product Declaration (EPD) # 508 SOPREMA | LCA RESULTS Page 17 4.2. CONTRIBUTION ANALYSIS As seen in the figures below, results for SOPRASESAL LM 200 S & LM 200 T are similar as they are manufactured at the same facility with similar components. SOPRASESAL LM 200 T has fumed silica (2-5 wt.%) and cellulose fibre (2-5 wt.%) in replacement of water. These two components explain the increased contribution to extraction and upstream production (A1) for ozone layer depletion (ODP), primary energy non-renewable, nuclear (PENR-nuclear) and primary energy renewable, biomass (PER-biomass) in SOPRASEAL LM 200 T compared to SOPRAEAL LM 200 S. Contribution analysis of information modules A1-A3 of the SOPRASEAL LM 200 S product life cycle stage - TRACI & CED indicators. Contribution analysis of information modules A1-A3 of the SOPRASEAL LM 200 T product life cycle stage - TRACI & CED indicators. 0%10%20%30%40%50%60%70%80%90%100%kg SO2 eqkg N eqkg CO2 eq kg CFC-11eqkg O3 eqMJ, HHVMJ, HHVMJ, HHVMJ, HHVAPEPGWPODPSFPPENR-fossilPENR-nuclearPER-biomassPER-swhgSOPRASEAL LM 200 SA1 - Extraction and upstream productionA2 - Transport to factoryA3 - Manufacturing0%10%20%30%40%50%60%70%80%90%100%kg SO2 eqkg N eqkg CO2 eq kg CFC-11eqkg O3 eqMJ, HHVMJ, HHVMJ, HHVMJ, HHVAPEPGWPODPSFPPENR-fossilPENR-nuclearPER-biomassPER-swhgSOPRASEAL LM 200 TA1 - Extraction and upstream productionA2 - Transport to factoryA3 - Manufacturing

Environmental Product Declaration (EPD) # 508 SOPREMA | ADDITIONAL ENVIRONMENTAL INFORMATION Page 18 5. ADDITIONAL ENVIRONMENTAL INFORMATION 5.1. REGULATED HAZARDOUS SUBSTANCES SOPRASEAL LM 200 S & LM 200 T may cause an allergic skin reaction or cancer and is harmful to aquatic life. Since the carcinogenic ingredients in this compound are encapsulated, the risk of exposure by inhalation is minimal when used in accordance with the user documentation. Regulated hazardous substances are reported in the table below. Table 2: SOPRASEAL LM 200 S & LM 200 T regulated hazardous substances. Ingredient name % CAS number Reference standard 3-Iodo-2-propynyl butylcarbamate 0.1-1 55406-53-6 OSHA/HCS (29 CFR 1910.1200) Crystalline silica, respirable powder 0.1-1 14808-60-7 OSHA/HCS (29 CFR 1910.1200) Carbon black, respirable powder 0.1-1 1333-86-4 OSHA/HCS (29 CFR 1910.1200) 5.2. DANGEROUS SUBSTANCES SOPRASEAL LM 200 S & LM 200 T are liquid products that are harmful to aquatic life; thus, the material must be contained and prevented from being discharged to any waterway, sewer or drain. Furthermore, appropriate personal respiratory and skin protective equipment shall be worn. 5.3. FURTHER INFORMATION SOPREMA has also published a Health Product Declaration® for the SOPRASEAL LM 200 S. More details are available on the HPDC public repository: https://www.hpd-collaborative.org/hpd-public-repository/. Additional product information can be found on SOPREMA’s website (https://www.soprema.ca/en/products-systems/building-components/walls/air-and-vapour-barrier).

Environmental Product Declaration (EPD) # 508 SOPREMA | REFERENCES Page 19 6. REFERENCES[6][7] [1] International Organization for Standardization (ISO), “ISO 14025 Environmental labels and declarations - Type III environmental declarations - Principles and procedures,” 2006. [2] International Organization for Standardization (ISO), “ISO 21930:2017(E) Sustainability in buildings and civil engineering works — Core rules for environmental product declarations of construction products and services,” 2017. [3] ASTM International, “Water-Resistive and Air Barriers PCR,” 2017[Online]. Available: https://www.nsf.org/standards-development/product-category-rules. [4] International Organization for Standardization (ISO), “ISO 14044:2006/AMD1:2017/AMD 2:2020 Environmental management - Life cycle assessment - Requirements and guidelines,” 2006. [5] F. R. et al., “Overview and Methodology. ecoinvent report No. 1,” Dübendorf, 2007. [6] ASTM International, “ASTM Program Operator Rules. Version: 8.0, Revised 04/29/20,” 2020[Online]. Available: www.astm.org. [7] Vertima, “Life Cycle Assessment of SOPREMA’s Air Barriers,” 2023.

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