B-08 Repair with complete LCA

Aspect B-08 Repair with complete LCA
Description The repair module covers all corrective, responsive or reactive treatment of a building product or construction works to return it to a condition in which it can deliver its required functional and technical performance. It covers only the partial replacement of components and building parts (in case of failure), and should be distinguished from the replacement module, which is related to the complete replacement of component and building parts. This aspect of the EeBGuide also addresses the distinction between repair, maintenance and replacement.

related study objective

stand-alone LCA comparative assertion

related study phase

goal and scope definition inventory analysis (LCI) impact assessment (LCIA) interpretation reporting

relevant for

new buildings existing buildings construction products screening LCA simplified LCA complete LCA
Provisions The reparation procedure refers only to corrective, responsive or reactive actions in response to loss of performances of a building component or building part.Repair is distinguishable from maintenance and replacement by the following aspects [EN 15804]:

  • Maintenance is a planned (proactive) action that maintains component performance, whereas repair is a corrective (reactive) action in response to damage.
  • Replacement covers the complete replacement of a component, whereas repair covers only replacement of sub-components.

It should be noted that:

  • EPD containing information about the reference service life of a product should comply with the ISO 15686 series [EN 15804].
  • The RSL should be declared, with a description of use that should (normally) encompass maintenance (proactive actions), notably according to ISO 15868-8.
  • The manufacturer cannot be held responsible for the actual design of the building, the use and application of the product, environment, workmanship or use [EN 15804].

It is thus to be expected that little information related to the repair module will be included in cradle-to-grave EPDs (or cradle-to-gate with corresponding options). Instead, most information would probably be divided between the maintenance module (necessary operations to maintain product performance, including sub-component replacement, in a given set of in-use conditions) and the replacement module (replacement at the end of life of the component).

Consequently, the repair module is considered optional in the context of the present guide.

According to EN 15978, the boundary for repair should include:

  • production of the repaired part of the component and ancillary products;
  • transportation of the repaired part of the component and ancillary products, including production impacts;
  • aspects of any losses of materials during transportation;
  • the process of repairing the part of component and ancillary products;
  • waste management of the removed part of the component and of ancillary products;
  • the end-of-life stage of the removed part of the component and of ancillary products.

Water and energy usage related to the repair process should always be included.

Rules from: EN 15978: General Boundary for repair (Module B3)
8.3 Time related characteristics
8.6.3 Scenarios for maintenance, repair, replacement

EN 15804:

6.3.3. Reference service life  – B3 Reparation B1–B5 use stage related to the building fabric

Annex A

Guidance Repair is optional in the context of complete LCA in the case of insufficient data.The overall repair scenario should be consistent with respect to the building structure (e.g. replacement of coating is mandatory when replacing the support). In the context of a complete building LCA of an existing building, it is recommended that the repair module be based on the history of the building.The progressive loss of performance of some components has an impact on the overall behaviour of the building (e.g. loss of performance of insulation may lead to an increase of energy demand due to heating). If sufficient data are available, these aspects should be addressed by using a sensitivity analysis.

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