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Process Data set: Silicone-based products, group 2 - Silicone sealants (en) en de

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Key Data Set Information
Location RER
Reference year 2022
Name
Silicone-based products, group 2 - Silicone sealants
Use advice for data set Scope: This verified EPD entitles the holder to bear the symbol of the Institut Bauen und Umwelt e.V. It exclusively applies for products produced in Europe and for a period of five years from the date of issue. This EPD may be used by members of DBC, EFCC, FEICA and IVK and their members provided it has been proven that the respective product can be represented by this EPD. For this purpose, a guideline is available at the secretariats of the four associations. The members of the associations are listed on their respective websites. System boundary: Modules A1, A2 and A3 are taken into consideration in the LCA: - A1 Production of preliminary products - A2 Transport to the plant - A3 Production incl. provision of energy, production of packaging as well as auxiliaries and consumables and waste treatment - A4 Transport to site - A5 Installation, product applied into the building during A5 phase operations and packaging disposal. This stage considers VOC emissions during the installation phase. The declared product contain substances in(to) the formulation that directly emit as VOC. VOCs are even generated by a chemical reaction that is occurring during this phase. The end of life for the packaging material considered is described below: -Incineration, for materials like plastic, paper and wood. -C1-C2-C3-D The building deconstruction (demolition process) takes place in the C1 module which considers energy generation and consumption of diesel and all the emissions connected with the fuel-burning process to run the machines. After the demolition, the product is transported to the end-of-life processing (C2 module) where all the impacts related to the transport processes are considered. For precautionary principle and as a worst-case scenario, thermal treatment is the only end-of-life scenario considered. This is modelled by the incineration process (module C3) where the product ends its life cycle. Module D accounts for potential benefits that are beyond the defined system boundaries. Credits are generated during the incineration of wastes and related electricity produced that are occurring in the A5 module.
Technical purpose of product or process Module 1: Façade sealants Silicone-based products are used for the elastic sealing of joints. The areas of application for façade sealants include expansion joints (movement joints) and/or connection joints already existing in exterior walls and on window and door frames (including the inside section). All these sealants fulfil key functions of the building. Module 2: Sealants for glazing Silicone-based products are used for the elastic sealing of joints which may be subject to movement. Sealants for glazing are used in the following areas: (i)Glass to glass (ii)Glass to frame (iii)Glass to porous substrates Module 3: Sanitary sealants The areas of application for silicone-based sanitary sealants are joints in sanitary areas and kitchens. Joints sealed using sanitary sealants comprise connection joints between sanitary furnishings and the wall, connection joints between the floor and wall or movement joints across surfaces, for example. Module 4: Sealants for pedestrian walkways The areas of application for silicone-based sealants for pedestrian walkways are floor joints designed for pedestrian walkways, public areas, movement joints between concrete slabs, areas with pedestrian load, areas used with trolleys, walkable floors, balconies, terraces, warehouses. Module 5: Bonded glazing sealants One- and two-component structural sealants are to be used in a structural sealant glazing system (SSGK) to bond glazing products to metallic structural seal support frames and/or as the second barrier of the structural hermetic seal in insulating glass units.
Classification
Class name : Hierarchy level
  • OEKOBAU.DAT: 6.7.02 Kunststoffe / Dichtmassen / Silikon
  • IBUCategories: 02 Building products / Membranes, including Liquid applied and kits / Building sealants
General comment on data set Silicone-based products, group 2 with a Volatile Organic Compound (VOC) content ≤2 % (VOC definition according to Decopaint Directive) are manufactured from reactive siloxane and so-called silicone oil, optionally by using fillers, extenders, colour pigments, cross-linkers, bonding agents and catalysts. For most of the applications the products are formulated as moisture-reactive one-component systems; for industrial applications there are also two-component systems available. They permanently and elastically seal joints planned for the building. Silicone-based products fulfil key functions. Ingress of moisture into the structure via the joints is prevented by joint sealants. With the use of silicone-based products, the fitness for use of the building and the service life are decisively extended. The product displaying the highest environmental impacts was used as a representative product for calculating the Life Cycle Assessment results (worst-case approach).
Copyright Yes
Owner of data set
Quantitative reference
Reference flow(s)
Material properties of the reference flow
    • gross density: 1250.0 kg/m^3
Biogenic carbon content
  • Carbon content (biogenic) - packaging: 0.024 kg
Time representativeness
Data set valid until 2027
Technological representativeness
Technology description including background system Silicone-based products, group 2 with a Volatile Organic Compound (VOC) content ≤2 % (VOC definition according to Decopaint Directive) are manufactured from reactive siloxane and so-called silicone oil, optionally by using fillers, extenders, colour pigments, cross-linkers, bonding agents and catalysts. For most of the applications the products are formulated as moisture-reactive one-component systems; for industrial applications there are also two-component systems available. They permanently and elastically seal joints planned for the building. Silicone-based products fulfil key functions. Ingress of moisture into the structure via the joints is prevented by joint sealants. With the use of silicone-based products, the fitness for use of the building and the service life are decisively extended. According to the Model EPD system (IBU) and the guideline and the substance list (available for members of the trade associations FEICA, EFCC, IVK and DBC), the environmental impacts of the substances are condensed to a single score; the single score of a formulation is calculated based on the single score of the substances. The products are grouped according to their single score (group 1 to 3), the formulation displaying the highest environmental impacts was used as a representative product for calculating the Life Cycle Assessment results (worst-case approach). Technical data: The density of the products is between 1,00 and 1,50 g/cm³, other relevant technical data can be found in the manufacturer’s technical documentation. Module 1: Façade sealants The minimum requirements on water and airtightness as per Table ZA.1 of EN 15651-1 apply: see table Module 2: Sealants for glazing The minimum requirements on water and airtightness as per Table ZA.1 of EN 15651- 2 apply: see table Module 3: Sanitary sealants The minimum requirements on water and airtightness as per Table ZA.1 of EN 15651-3 apply: see table Module 4: Sealants for pedestrian walkways The minimum requirements on water and airtightness as per Table ZA.1 of EN 15651-4 apply: see table Module 5: Bonded glazing sealants Structural Sealants must comply with ETAG 002-1 used as EAD. Declared unit: This EPD refers to the declared unit of 1 kg of silicone-based product, group 2; applied into the building with a density of 1.0 - 1.5 g/cm³ in accordance with the IBU PCR part B for construction sealant. The results of the Life Cycle Assessment provided in this declaration have been selected from the product with the highest environmental impact (worst-case scenario). Depending on the application, a corresponding conversion factor such as the density to convert volumetric use to mass must be taken into consideration. The Declaration type is according to EN 15804: Cradle to gate with options, modules C1–C3, and module D (A1–A3, C, D) and additional modules (A4-A5).

Indicators of life cycle

IndicatorDirectionUnit Production
A1-A3
Transport
A4
Installation
A5
De-construction
C1
Transport
C2
Waste processing
C3
Recycling Potential
D
Input
  • 50.33
  • 0.04346
  • 1.435
  • 0.00001177
  • 0.0005141
  • 0.09175
  • -2.147
Input
  • 0.905
  • 0
  • -0.905
  • 0
  • 0
  • 0
  • 0
Input
  • 51.23
  • 0.04346
  • 0.5297
  • 0.00001177
  • 0.0005141
  • 0.09175
  • -2.147
Input
  • 104.6
  • 0.7739
  • 8.965
  • 0.003738
  • 0.1632
  • 13.36
  • -10.44
Input
  • 20.44
  • 0
  • -7.622
  • 0
  • 0
  • -12.82
  • 0
Input
  • 125
  • 0.7739
  • 1.343
  • 0.003738
  • 0.1632
  • 0.5411
  • -10.44
Input
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
Input
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
Input
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
Input
  • 0.06922
  • 0.00005032
  • 0.002095
  • 2.112E-8
  • 9.222E-7
  • 0.003629
  • -0.002487
Output
  • 9.975E-7
  • 3.602E-8
  • 1.006E-8
  • 3.625E-13
  • 1.583E-11
  • 1.734E-9
  • -4.154E-9
Output
  • 1.719
  • 0.0001184
  • 0.02185
  • 3.822E-7
  • 0.00001669
  • 0.1338
  • -0.004677
Output
  • 0.005158
  • 9.579E-7
  • 0.00005687
  • 4.012E-9
  • 1.752E-7
  • 0.00002462
  • -0.0007329
Output
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
Output
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
Output
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
  • 0
Output
  • 0
  • 0
  • 1.244
  • 0
  • 0
  • 0
  • 0
Output
  • 0
  • 0
  • 2.222
  • 0
  • 0
  • 0
  • 0

IndicatorUnit Production
A1-A3
Transport
A4
Installation
A5
De-construction
C1
Transport
C2
Waste processing
C3
Recycling Potential
D
  • 6.821
  • 0.05872
  • 0.6911
  • 0.0002731
  • 0.01213
  • 0.4554
  • -0.6185
  • -0.09864
  • 0.0001695
  • 0.1145
  • 0.00001211
  • 0.0005314
  • 0.03464
  • -0.001415
  • 6.912
  • 0.05808
  • 0.5765
  • 0.000261
  • 0.0116
  • 0.4207
  • -0.6166
  • 0.006956
  • 0.0004702
  • 0.00007388
  • 6.267E-9
  • 2.736E-7
  • 0.00003428
  • -0.0004065
  • 2.084E-13
  • 6.98E-18
  • 2.137E-15
  • 2.78E-20
  • 1.214E-18
  • 2.962E-16
  • -6.046E-15
  • 0.01913
  • 0.0001532
  • 0.02969
  • 0.000004814
  • 0.0000332
  • 0.0005111
  • -0.0006315
  • 0.02957
  • 0.000174
  • 0.0003704
  • 0.000003531
  • 0.00003659
  • 0.0005146
  • -0.0008363
  • 0.05189
  • 0.0008681
  • 0.000867
  • 0.00001754
  • 0.0001851
  • 0.002473
  • -0.00235
  • 0.00001163
  • 1.765E-7
  • 1.248E-7
  • 5.636E-11
  • 2.461E-9
  • 1.015E-7
  • -7.485E-7
  • 0.004759
  • 0.00007751
  • 0.00006651
  • 0.000001602
  • 0.00001681
  • 0.0001968
  • -0.000219
  • 2.236
  • 0.0005191
  • 0.08219
  • 5.16E-7
  • 0.00002253
  • 0.1537
  • -0.06005
  • 0.0002167
  • 4.164E-9
  • 0.000002167
  • 7.898E-12
  • 3.448E-10
  • 4.523E-9
  • -9.699E-8
  • 125
  • 0.7731
  • 1.343
  • 0.003734
  • 0.163
  • 0.5411
  • -10.44

IndicatorUnit Production
A1-A3
Transport
A4
Installation
A5
De-construction
C1
Transport
C2
Waste processing
C3
Recycling Potential
D
1This impact category deals mainly with the eventual impact of low dose ionizing radiation on human health of the nuclear fuel cycle. It does not consider effects due to possible nuclear accidents, occupational exposure nor due to radioactive waste disposal in underground facilities. Potential ionizing radiation from the soil, from radon and from some construction materials is also not measured by this indicator.
2The results of this environmental impact indicator shall be used with care as the uncertainties on these results are high or as there is limited experiences with the indicator.
Comparative toxic unit for humans (carcinogenic) (HTP-c) 2
  • ND
  • ND
  • ND
  • ND
  • ND
  • ND
  • ND
Comparative toxic unit for humans (noncarcinogenic) (HTP-nc) 2
  • ND
  • ND
  • ND
  • ND
  • ND
  • ND
  • ND
Incidence of disease due to PM emissions (PM) 2
  • ND
  • ND
  • ND
  • ND
  • ND
  • ND
  • ND
Human exposure efficiency relative to U235 (IR) 1
  • ND
  • ND
  • ND
  • ND
  • ND
  • ND
  • ND
Comparative toxic unit for ecosystems (ETP-fw) 2
  • ND
  • ND
  • ND
  • ND
  • ND
  • ND
  • ND
Soil quality index (SQP) 2
  • ND
  • ND
  • ND
  • ND
  • ND
  • ND
  • ND