B-04 Maintenance with simplified LCA

Aspect B-04 Maintenance with simplified LCA
Maintenance is defined as the combination of all planned actions during the service life to maintain the product installed in a building in a state in which it can deliver its required functional and technical performance. Maintenance is optional in the context of a simplified LCA.

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 maintenance procedure refers only to planned action in response to anticipated losses of performance of building components and building parts. Building modifications in response to unexpected events (e.g. flood, inappropriate use, or vandalism) should be considered as reparation (B3), and may be ignored in the context of a simplified LCA.The overall maintenance scenario should be developed in accordance with:

  • individual EPD (cradle to gate with corresponding option, or cradle to grave);
  • client requirements and current practices;
  • product and component manufacturers’ information;
  • existing applicable standards, such as ISO 15686-1, -2, -7 and -8 [ISO 15686].

The maintenance scenario should cover at least the following elements:

  • roofing and roof framework;
  • façades, exterior joinery work and windows;
  • partitioning, lining and suspended ceilings;
  • floor finishes and coverings, walls and ceiling coverings;
  • HVAC (heating – ventilation – cooling – DHW).

Other components and building parts (e.g. electrical and communication network – high and low power, lighting equipment and sanitary facilities) may be covered, depending on the scope of the study and the available information. In any case the boundaries of the maintenance scenario should be clearly stated.

According to EN 15804, the maintenance scenario should include:

  • the production and transportation of any component and ancillary products used for maintenance, including cleaning;
  • the transportation of any wastage from maintenance processes or from maintenance-related transportation;
  • the end-of-life processes of any wastage from transportation and the maintenance process, including any part of the component and ancillary materials removed;
  • water and energy usage related to cleaning.

However, water and energy usage related to maintenance operations and cleaning may be taken into through simplified scenarios.

Rules from:
EN 15978: General Boundary for maintenance (Module B2)

8.3 Time related characteristics
8.6.3 Scenarios for maintenance, repair, replacement

EN 15804:

6.3.3. Reference service life  – B2 Maintenance B1–B5 use stage related to the building fabric

Annex A

It is expected that not all necessary information required to develop a maintenance scenario will be included in the EPDs. Nevertheless, the maintenance scenario should encompass the planned actions for listed components (see above), based on the available information. Knowledge gaps should be filled by referring to state-of-the-art practice.In addition, LCA of existing buildings may take into account real and established practices (real-life data) specific to a particular building, but scenarios based on current practice may also be developed.

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