VELUX Modular Skylights - Double Glazing Configuration

Environmental Impact

Product Details

Description

VELUX Modular Skylights (VMS) are sash-frame constructed single roof windows and are CE-marked in accordance with EN 14351-1. The modules fit together and can be configured in several predefined daylight solutions. The skylights come as fixed or venting modules and are delivered with dedicated factory finished flashings to ensure watertightness in every solution. The EPD covers VMS modules in sizes from 0.405 m² up to 2.3 m², the chain actuator (motor) is not included in this EPD. The glass panes are double glazing and different glass configurations are covered by the EPD. The glass thickness ranges from 12 to 18 mm. The glass panes have cavities filled with Argon gas. The representative glass configuration used for the EPD calculations has 8 mm toughened glass, 16 mm spacer and 10 mm laminated glass. This configuration is conservative with regards to the environmental impact results. The product has a reference service life of 30 years according to EN 17213

EPD PDF Document

ENVIRONMENTALPRODUCT DECLARATIONIN ACCORDANCE WITH ISO 14025:2006 AND EN 15804:2012+A2:2019/AC:2021SmartEPD-2026-077-1131-01VELUX Modular Skylights - Double Glazing ConfigurationDate of Issue:Nov 05, 2026Expiration:Nov 05, 2031Last updated:Nov 05, 2026Refer to the EPD Library at for the latest EPD listing informationwww.smartepd.com

General InformationVELUXÅdalsvej 99, 2970 Hørsholm, Denmark+45 45164000epd.support@velux.comvelux.comProduct Name:VELUX Modular Skylights - Double Glazing ConfigurationDeclared Unit:1 m² of a window ≤ 2.3 m² (reference dimensions according to EN 17213: 1.23 m × 1.48 m)Declaration Number:SmartEPD-2026-077-1131-01Date of Issue:November 05, 2026Expiration:November 05, 2031Last updated:November 05, 2026EPD Scope:Cradle to gate with other optionsA1 - A3, A4, A5, C1 - C4, DMarket(s) of Applicability:EuropeGeneral Organization InformationVELUX is a Danish manufacturing company that specializes in roof windows, skylights, sun tunnels and related accessories. The company is headquarteredin Hørsholm, Denmark and is a part of VKR Holding A/S. VELUX Group is a founding partner of the global Active House Alliance.Further information can be found at:https://www.velux.comLimitations, Liability and OwnershipEnvironmental declarations from different programs (ISO 14025) may not be comparable. Comparison of the environmental performance of products usingEPD information shall be based on the product’s use and impacts at the building level, and therefore EPDs may not be used for comparability purposes whennot considering the whole building life cycle. EPD comparability is only possible when all stages of a life cycle have been considered. However, variations anddeviations are possible. Example of variations: Different LCA software and background LCI datasets may lead to differences results for upstream ordownstream of the life cycle stages declared. The EPD owner has sole ownership, liability, and responsibility for the EPD.Reference StandardsStandard(s):ISO 14025:2006 and EN 15804:2012+A2:2019/AC:2021Core PCR:IBU PCR for Building-Related Products and Services Part A v1.4Date of issue: April 15, 2024Sub-category PCR:IBU PCR Part B: Requirements on the EPD for Windows and Doors v1.0/1.7/1.4Date of issue: January 26, 2021Valid until: August 01, 2026VELUX Modular Skylights - Double Glazing ConfigurationVELUXPage 2 / 13

Sub-category PCR review panel:Contact Smart EPD for more information.General Program Instructions:Smart EPD General Program Instructions v.2.0, March 2025Verification InformationLCA Author/Creator:juan@parqhq.comparqjuan@parqhq.comEPD Program Operator:Smart EPDinfo@smartepd.comwww.smartepd.com585 Grove St., Ste. 145, Herndon, VA 20170, USAVerification:Independent critical review of the LCA and data, according to ISO 14044 andISO 14071:ExternalRifat KarimIndependent Consultantrifat.chimique@gmail.comIndependent external verification of EPD, according to ISO 14025 andreference PCR(s):ExternalRifat KarimIndependent Consultantrifat.chimique@gmail.comProduct InformationDeclared Unit:1 m² of a window ≤ 2.3 m² (reference dimensions according to EN 17213: 1.23 m × 1.48 m)Mass:60.27 kgProduct Specificity:Product AverageProduct SpecificProduct DescriptionVELUX Modular Skylights (VMS) are sash-frame constructed single roof windows and are CE-marked in accordance with EN 14351-1. The modules fittogether and can be configured in several predefined daylight solutions. The skylights come as fixed or venting modules and are delivered with dedicatedfactory finished flashings to ensure watertightness in every solution. The EPD covers VMS modules in sizes from 0.405 m² up to 2.3 m², the chain actuator(motor) is not included in this EPD. The glass panes are double glazing and different glass configurations are covered by the EPD. The glass thickness rangesfrom 12 to 18 mm. The glass panes have cavities filled with Argon gas. The representative glass configuration used for the EPD calculations has 8 mmtoughened glass, 16 mm spacer and 10 mm laminated glass. This configuration is conservative with regards to the environmental impact results. Theproduct has a reference service life of 30 years according to EN 17213Product SpecificationsProduct SKU(s):VMS HVC 1230x1480 - Double Glazed (0010TB)Product Classification Codes:EC3 - Openings -> TranslucentWallAndRoofAssembliesVELUX Modular Skylights - Double Glazing ConfigurationVELUXPage 3 / 13

Material CompositionMaterial/Component CategoryOrigin% MassAluminum profileDK1.92FastenersDK0.3Gaskets, washersDK0.21Hard plasticsDK0.31Insulated glassDK71.8Other polymer partsDK0.01Others1.15SashDK16.53Sealing, gasketsDK0.95SteelDK6.82Packaging MaterialOriginkg MassCardboardEU0.1PalletEU0.06Plastic coverEU0.48Biogenic Carbon Contentkg C per m²Biogenic carbon content in product0Biogenic carbon content in accompanyingpackaging0.07Hazardous MaterialsNo regulated hazardous or dangerous substances are included in this product.EPD Data SpecificityPrimary Data Year:Jan 1, 2025 - Dec 31, 2025Manufacturing Specificity:Industry AverageManufacturer AverageFacility SpecificAveraging:VELUX Modular Skylights - Double Glazing ConfigurationVELUXPage 4 / 13

Averaging was not conducted for this EPDSystem BoundaryProductionA1Raw material supplyA2TransportA3ManufacturingConstructionA4Transport to siteA5Assembly / InstallUseB1UseNDB2MaintenanceNDB3RepairNDB4ReplacementNDB5RefurbishmentNDB6Operational Energy UseNDB7Operational Water UseNDEnd of LifeC1DeconstructionC2TransportC3Waste ProcessingC4DisposalBenefits & Loads BeyondSystem BoundaryDRecycling, Reuse Recovery PotentialNote:ND = Module not declaredPlantsØstbirkØstvej 2, Ostbirk, DenmarkVELUX Modular Skylights - Double Glazing ConfigurationVELUXPage 5 / 13

Product Flow DiagramSoftware And DatabaseLCA Software:SimaPro v. 10.2LCI Foreground Database(s):Ecoinvent v. 3.9.1Cut-off by ClassificationLCI Background Database(s):Ecoinvent v. 3.9.1Cut-off by ClassificationA foreground LCI database is the database used to model the primary, site-specific data collected for this EPD. A background LCI database is the databaseused to model generic or non-specific data.Data QualityPrecision & CompletenessPrecision: Inventory data were directly measured, calculated, or conservatively estimated from primary sources using consistent units and QA checks.Background processes from ecoinvent v3 were adopted with their documented uncertainty/precision metadata where available, preserving atransparent record of data quality.VELUX Modular Skylights - Double Glazing ConfigurationVELUXPage 6 / 13

Completeness: The product system's mass balance and inventory completeness were thoroughly checked. Some exclusions were made in line with thePCR requirements, such as personnel impacts, R&D activities, business travel, and point-of-sale infrastructure. However, no data were intentionallyomitted.Consistency and ReproducibilityConsistency: Primary data for all modules were consistently gathered aiming at the highest level of detail possible. Background processes weremodeled mainly with the ecoinvent database. The same allocation rules, cut-off criteria, and impact assessment methods were applied throughout,ensuring methodological coherence and consistent data quality across the entire LCA model.Reproducibility: This study ensures reproducibility by providing comprehensive disclosure of input–output data, dataset choices, and modelingapproaches. A knowledgeable third party should be able to approximate the results using the same data and modeling methods.RepresentativenessTemporal: Primary data were collected for a 12-month period representing the 2025 calendar year to ensure the representativeness of post-consumercontent. Secondary data from the ecoinvent v3 database are typically representative of recent years.Geographical: Primary data represent VELUX's production facilities. Where applicable, differences in electric grid mix were considered usingappropriate secondary data. The use of country-specific data ensures high geographical representativeness, and proxy data were only used whencountry-specific data were unavailable.Technological: Both primary and secondary data were tailored to the specific technologies studied, ensuring high technological representativeness.Life Cycle Module DescriptionModules A1–A3: The LCA model covers the manufacture of raw materials and components for VELUX products (A1) which are then transported to VELUXfacilities by truck (A2). The manufacturing stage (A3) begins with receipt of these materials, which are bent, cut, welded, and assembled into finished flapsand skylight systems. When required, additional parts like DSL grids and electronic components for home-automation systems are custom-cut andassembled to order.Modules A4–A5: Once manufacture is completed, products are shipped to distribution centers and then to the end user by truck (A4). For installation (A5), a3% material installation loss was assumed. This module includes disposal of that waste and of the product packaging.Modules C1–C4 and D: At end of life (C1–C4), the product is assumed to be collected, and each waste stream (e.g., aluminum, glass, PVC) is handledseparately—landfilled, recycled, or incinerated with energy recovery. Loads and benefits beyond the system boundary are considered in Module D (e.g.,displacement of virgin materials and electricity).LCA DiscussionAllocation ProcedureAllocation of co-products was avoided, to the extent possible, based on the guidance given in ISO 14044:2006, 4.3, and in EN 15804+A2:2019. Energy useat the facility level was allocated by the amount of product produced. The manufacturing process does not consume water or generate wastewater or airemissions, other than those from fuel combustion. Solid waste was estimated using packaging masses and material losses and allocated following thepolluter pays principle.Cut-off ProcedureThe system boundary was defined based on relevance to the goal of the study. For the raw material (A1) and process related inputs (A3), all availableenergy and material flow data have been included in the model.VELUX Modular Skylights - Double Glazing ConfigurationVELUXPage 7 / 13

Renewable ElectricityEnergy Attribute Certificates (EACs) such asRenewable Energy Certificates (RECs) or PowerPurchase Agreements (PPAs) are included in thebaseline reported results:YesElectricity Source:OffsiteRenewable type(s):solarPercent of EPD Owner's product-related electricitycovered:100 %Commitment pledged for entire EPD validityperiod:YesElectricity accounting methodology:Market-basedScenariosTransport to the building/construction site (A4)A4 ModuleFuel Type:DieselVehicle Type:Truck and TrailerTransport Distance:350 kmCapacity Utilization:33 %Packaging Mass:0.64 kgWeight of products transported:60.91 kgCapacity utilization volume factor:1Assumptions for scenario development:Transport distance includes finished product to distribution center and distribution center to pointof sale.Installation in to the building/construction site (A5)A5 ModuleInstallation Scrap Rate Assumed:0 %Mass of Packaging Waste Specified by Type:0.64 kgBiogenic Carbon Contained in Packaging (kg C):0.07 kgAssumptions for scenario development:No installation product loss as these are modular systemsEnd of Life (C1 - C4)C1 - C4 ModulesCollection ProcessCollected Separately:60.27 kgCollected with Mixed Construction Waste:0 kgRecoveryVELUX Modular Skylights - Double Glazing ConfigurationVELUXPage 8 / 13

Recycling:18.39 kgLandfill:30.54 kgIncineration:11.34 kgAssumptions for scenario development:Disposal and recycling rates as per Environmental Performance Assessment Method for Construction Works / version 1.2 (January 2025).Reuse, Recovery and / or Recycling Potentials & Relevant Scenario Information (D)D ModuleRecycling Rate of Product:30.52 %Recycled Content of Product:9.06 %Net Energy Benefit from Energy Recovery fromWaste Treatment Declared as Export Energy inC3:91.00 MJProcess and Conversion Efficiencies:Recycling rates for aluminum, steel and other metals >90%; energy recovery from incinerationassumes 18% electrical efficiency and 31% thermal, as per Environmental PerformanceAssessment Method for Construction Works / version 1.2 (January 2025).ResultsEnvironmental Impact Assessment ResultsEF 3.1per 1 m² of product of a window ≤ 2.3 m² (reference dimensions according to EN 17213: 1.23 m × 1.48 m).LCIA results are relative expressions and do not predict impacts on category endpoints, the exceeding of thresholds, safety margins or risks.Impact CategoryUnitMethodA1 - A3A4A5C1C2C3C4DGWP-totalkg CO2 eqEF 3.11.96e+22.14e+01.19e+005.69e-17.94e+08.74e-2-2.29e+1GWP-biogenickg CO2 eqEF 3.16.72e-17.15e-42.58e-101.90e-45.22e-41.60e-5-2.10e-3GWP-fossilkg CO2 eqEF 3.11.95e+22.13e+09.29e-105.68e-17.94e+08.74e-2-2.29e+1GWP-luluckg CO2 eqEF 3.11.66e-11.04e-31.14e-502.77e-46.04e-51.04e-5-2.98e-2ODPkg CFC11 eqEF 3.13.45e-64.85e-81.16e-901.29e-88.18e-91.32e-9-8.34e-7APmol H+ eqEF 3.11.17e+05.28e-32.44e-401.41e-31.81e-37.89e-4-8.49e-2EP-freshwaterkg P eqEF 3.13.30e-21.58e-43.80e-604.19e-52.38e-54.44e-6-4.82e-3EP-marinekg N eqEF 3.12.64e-11.44e-31.34e-403.83e-41.03e-33.54e-4-1.55e-2EP-terrestrialmol N eqEF 3.12.18e+01.48e-21.15e-303.93e-38.82e-33.85e-3-1.73e-1POCPkg NMVOC eqEF 3.17.25e-18.63e-33.09e-402.30e-32.22e-31.16e-3-7.19e-2ADP-minerals&metalskg Sb eqEF 3.19.31e-45.97e-66.93e-801.59e-63.83e-73.13e-89.22e-5ADP-fossilMJEF 3.12.71e+33.24e+13.08e-108.62e+01.47e+01.12e+0-2.72e+2WDPm3 depriv.EF 3.11.15e+21.55e-14.20e-204.12e-23.60e-12.49e-3-6.16e+0Note:Not all abbreviated indicators listed below may be present in the results above. The inclusion of indicators varies based on PCR requirements.Abbreviations:GWP = Global Warming Potential, 100 years (may also be denoted as GWP-total, GWP-fossil (fossil fuels), GWP-biogenic (biogenic sources), GWP-luluc (land use and land use change)), ODP = Ozone DepletionPotential, AP = Acidification Potential, EP = Eutrophication Potential, SFP = Smog Formation Potential, POCP = Photochemical oxidant creation potential, ADP-Fossil = Abiotic depletion potential for fossil resources,VELUX Modular Skylights - Double Glazing ConfigurationVELUXPage 9 / 13

ADP-Minerals&Metals = Abiotic depletion potential for non-fossil resources, WDP = Water deprivation potential, PM = Particular Matter Emissions, IRP = Ionizing radiation, human health, ETP-fw = Eco-toxicity(freshwater), HTP-c = Human toxicity (cancer), HTP-nc = Human toxicity (non-cancer), SQP = Soil quality index.Comparisons cannot be made between product-specific or industry average EPDs at the design stage of a project, before a building has been specified.Comparisons may be made between product-specific or industry average EPDs at the time of product purchase when product performance andspecifications have been established and serve as a functional unit for comparison. Environmental impact results shall be converted to a functional unitbasis before any comparison is attempted. Any comparison of EPDs shall be subject to the requirements of ISO 21930 or EN 15804. EPDs are notcomparative assertions and are either not comparable or have limited comparability when they have different system boundaries, are based on differentproduct category rules or are missing relevant environmental impacts. Such comparison can be inaccurate, and could lead to erroneous selection ofmaterials or products which are higher-impact, at least in some impact categories.Resource Use Indicatorper 1 m² of product of a window ≤ 2.3 m² (reference dimensions according to EN 17213: 1.23 m × 1.48 m).IndicatorUnitA1 - A3A4A5C1C2C3C4DPEREMJ3.15e+24.74e-19.09e-301.26e-16.02e-29.23e-3-9.24e+0PERMMJ5.70e+10000000PERTMJ3.72e+24.74e-19.09e-301.26e-16.02e-29.23e-3-9.24e+0PENREMJ2.72e+33.24e+13.08e-108.63e+01.47e+01.12e+0-2.72e+2PENRMMJ7.90e-11.37e-31.31e-503.64e-46.49e-51.31e-55.83e-3PENRTMJ2.71e+33.24e+13.08e-108.63e+01.47e+01.12e+0-2.72e+2SMkg6.67e+00000000RSFMJ00000000NRSFMJ00000000FWm32.95e+04.39e-31.33e-301.17e-31.14e-26.00e-5-1.48e-1Note:Not all abbreviated indicators listed below may be present in the results above. The inclusion of indicators varies based on PCR requirements.Abbreviations:RPRE or PERE = Renewable primary resources used as energy carrier (fuel), RPRM or PERM = Renewable primary resources with energy content used as material, RPRT or PERT = Total use of renewable primaryresources with energy content, NRPRE or PENRE = Non-renewable primary resources used as an energy carrier (fuel), NRPRM or PENRM = Non-renewable primary resources with energy content used as material,NRPRT or PENRT = Total non-renewable primary resources with energy content, SM = Secondary materials, RSF = Renewable secondary fuels, NRSF = Non-renewable secondary fuels, RE = Recovered energy,ADPF = Abiotic depletion potential, FW = Use of net freshwater resources, VOCs = Volatile Organic Compounds.VELUX Modular Skylights - Double Glazing ConfigurationVELUXPage 10 / 13

Waste and Output Flow Indicatorsper 1 m² of product of a window ≤ 2.3 m² (reference dimensions according to EN 17213: 1.23 m × 1.48 m).IndicatorUnitA1 - A3A4A5C1C2C3C4DHWDkg00000000NHWDkg3.36e+009.96e-20003.05e+10RWDkg2.35e-39.87e-61.28e-702.63e-67.46e-71.32e-7-1.85e-6CRUkg00000000MFRkg4.53e+008.76e-2001.84e+100MERkg00000000EEMJ2.93e+106.23e+0009.10e+100Note:Not all abbreviated indicators listed below may be present in the results above. The inclusion of indicators varies based on PCR requirements.Abbreviations:HWD = Hazardous waste disposed, NHWD = Non-hazardous waste disposed, RWD = Radioactive waste disposed, HLRW = High-level radioactive waste, ILLRW = Intermediate- and low-level radioactive waste,CRU = Components for re-use, MFR or MR = Materials for recycling, MER = Materials for energy recovery, MNER = Materials for incineration, no energy recovery, EE or EEE = Recovered energy exported from theproduct system, EET = Exported thermal energy.Carbon Emissions and Removalsper 1 m² of product of a window ≤ 2.3 m² (reference dimensions according to EN 17213: 1.23 m × 1.48 m).IndicatorUnitA1 - A3A4A5C1C2C3C4DBio Carbon Removal from Productkg CO200000000Bio Carbon Emission from Productkg CO200000000Bio Carbon Removal from Packagingkg CO2-5.96e+00000000Bio Carbon Emission from Packagingkg CO25.69e+002.70e-100000Bio Carbon Emission from Waste duringManufacturing (renewable source)kg CO200000000Calcination Carbon Removalkg CO200000000Carbonation Carbon Emissionkg CO200000000Carbon Emission from Waste duringManufacturing (non-renewable source)kg CO200000000Note:Not all abbreviated indicators listed below may be present in the results above. The inclusion of indicators varies based on PCR requirements.Abbreviations:BCRP = Biogenic Carbon Removal from Product, BCEP = Biogenic Carbon Emission from Product, BCRK = Biogenic Carbon Removal from Packaging, BCEK = Biogenic Carbon Emission from Packaging, BCEW =Biogenic Carbon Emission from Combustion of Waste from Renewable Sources Used in Production Processes, CCE = Calcination Carbon Emissions, CCR = Carbonation Carbon Removals, CWNR = Carbon Emissionsfrom Combustion of Waste from Non-Renewable Sources used in Production Processes, GWP-luc = Carbon Emissions from Land-use Change.VELUX Modular Skylights - Double Glazing ConfigurationVELUXPage 11 / 13

InterpretationThe manufacturing of the products in this analysis involves the direct procurement of raw materials from suppliers. These materials are then transported tomanufacturing facilities in the EU where they are stored, processed, and combined to produce finished products. Notably, the product stage (stage 1) has thehighest impact contribution, mainly attributed to the environmental impacts of raw material manufacturing.Given that the raw materials used in product manufacturing have a significant impact, exploration of opportunities to substitute these materials withalternatives that have a lower environmental impact. Additionally, consideration should be given to collaborating with suppliers who employ sustainablemanufacturing techniques or integrate more renewable energy into their production processes. Such initiatives can lead to more environmentally friendlyproducts and further enhance the sustainability of the products in this analysis.0%20%40%60%80%100%GWP-TotalEF 3.1GWP-BiogenicEF 3.1GWP-FossilEF 3.1GWP-LulucEF 3.1ODPEF 3.1APEF 3.1EP-FreshwaterEF 3.1EP-MarineEF 3.1EP-TerrestrialEF 3.1POCPEF 3.1ADP-Minerals&MetalsEF 3.1ADP-FossilEF 3.1WDPEF 3.1Production (A1 - A3)Construction (A4 - A5)End of Life (C1 - C4)Additional Environmental InformationNoneFurther InformationTechnical characteristicsNameValueUnitFire resistance classB-s1.d0classVELUX Modular Skylights - Double Glazing ConfigurationVELUXPage 12 / 13

NameValueUnitAir permeability4classResistance to win load, (for window width >1000mm or height > 2400 mm no performance isdetermined)C5classResistance to snow loads8 mm toughened - 16 mm - 10.76 mm (55.2)laminated floatmmWatertightnesE1200classImpact resistance, (for window width >550 mmor height > 778 mm no performance isdeterminedtest is passed-Load bearing capacity of safety devicestest is passed-Acoustic performance38 (-1; -4)-Thermal transmittance, 0 degree installation acc.to EN 10077-1/21.4W/(m^(2)K)Solar factor0.51-Light transmittance0.73-ReferencesInstitut Bauen und Umwelt e.V. (IBU). (2021). General Programme Instructions for the IBU EPD Programme – Part A: Calculation Rules for the Life‐CycleAssessment and Requirements on the Background Report. Version 2.0, 01‑03‑2021. Berlin: IBU.Institut Bauen und Umwelt e.V. (IBU). (2021). Product Category Rules for Construction Products – Part B: Requirements on the EPD for Windows and Doors.Version 1.7, 08‑2021. Berlin: IBU.European Committee for Standardization (CEN). (2019). EN 15804:2012+A2:2019 – Sustainability of construction works – Environmental productdeclarations – Core rules for the product category of construction products. Brussels: CEN. (Including AC:2021)International Organization for Standardization (ISO). (2006). ISO 14040:2006 – Environmental management – Life cycle assessment – Principles andframework. Geneva: ISO. (Amendment 1:2020; confirmed current 2022)International Organization for Standardization (ISO). (2006). ISO 14044:2006 – Environmental management – Life cycle assessment – Requirements andguidelines. Geneva: ISO. (Amendments 1:2017 and 2:2020 included; confirmed current 2022)International Organization for Standardization (ISO). (2006). ISO 14025:2006 – Environmental labels and declarations – Type III environmental declarations –Principles and procedures. Geneva: ISOEurostat. (2024). Circular Economy indicators. Waste management: https://ec.europa.eu/eurostat/web/circular-economy/databaseStichting National Environmental Database. (2022). Environmental Performance Assessment Method for Construction Works. version 1.1.European Committee for Standardization (CEN). (2019). EN 17074:2019 – Sustainability of construction works – Environmental product declarations –Specific core rules for windows and doors. Brussels: CEN.European Committee for Standardization. (2016). Windows and doors — Product standard, performance characteristics — Part 1: Windows and externalpedestrian doorsets (EN 14351-1:2006+A2:2016).European Committee for Standardization. (2025). Windows and doors — Environmental product declarations — Product category rules complementary toEN 15804 for windows and pedestrian doorsets (EN 17213:2020+A1:2025).VELUX Modular Skylights - Double Glazing ConfigurationVELUXPage 13 / 13