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General comment A m² of a pitched steel roof, produced (cradle to gate LCA, only phase A1-A3)
Scope and type:
The AeroDek steel tiles are produced at the location of BMI AeroDek Herstal and they are applied
at the European market.
The background database is Ecoinvent version 3.5. It is a specific EPD for a specific product and the
type of this EPD is Cradle-to-Gate. The life cycle stages included are shown next.
Representativeness:
The input data are representative for AeroDek - Robust Plus 0.42 mm, a product of BMI. The data
are representative for the EU market.
Calculation rules:
In the Life cycle assessment the following is included in this study: Production A1-A3.
Modules A1-A3 of the AeroDek tiles production include the following:
- The provision of resources, additives, and energy;
- Transport of resources and additives to the production site;
- Production processes on-site including energy;
- Production of additives, disposal of production residues, and consideration of related emissions;
- Recycling of production/manufacturing scrap. Steel scrap is assumed to reach the end-of-waste
status once it is shredded and sorted, thus becomes input to the product system in the inventory.
Cut-off criteria
Measurement of on-site emissions were performed by BMI and those emissions were considered.
The specific emissions that are linked to the provision of thermal and electrical energy are also
considered in the specific processes. All reported data were incorporated and modelled using the
best available LCI data. Data for the sites were cross-checked with one another to identify potential
data gaps. No processes, materials or emissions that are known to make a significant contribution to
the environmental impact of the studied products have been omitted. On this basis, there is no
evidence to suggest that input or output contributing more than 1% to the overall mass or energy of
the system - or that are environmentally significant - have been omitted.
Assumptions and approximations
In this study, primary data was used to model all on-site processes. This data was cross-checked to
identify and eliminate data gaps. Secondary data from the Ecoinvent database was as
technologically and geographically representative as possible.
Data quality
The foreground data collected by the manufacturer are based on yearly production amounts and
extrapolations of measurements on specific machines and plants. The production data refer to the
year 2020. Most of the necessary life cycle inventories for the basic materials are available in the
Ecoinvent v3.5 database.
Scenarios and additional technical information:
In the Life cycle assessment the following is included in this study:
Product stage A1-A3
The production stage consists of the extraction of raw materials, transportation of the raw materials,
processing the raw materials into materials and the production of the product. The required energy
for production, external treatments, ancillary materials, packaging material and production emissions
are included.
Declaration of SVHC:
None of the substances contained in the product are listed in the "Candidate List of Substances of
Very High Concern for authorisation", or they do not exceed the threshold with the European
Chemicals Agency.
More information:
https://www.bmigroup.com/our-solutions/pitched-roofs/metal-tiles
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