B-10 Assessment of different repair and maintenance alternatives

*Aspect*		B-10 Assessment of different repair and maintenance alternatives
*Description*		The performance of a product often depends on maintenance. However, several maintenance schemes may be developed for the same product, depending on the owner’s requirements and the building specifics. In the case of the repair module, several repair alternatives may also be considered, notably for an existing building.
*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*	When considering and comparing several repair or maintenance scenarios, the following items should be taken into account and documented: Any deviation from the scenario contained in EPDs should be justified and documented. Overall repair scenarios should be consistent with the RSL of each component or building part, notably by referring to the ISO 15686 series [ISO 15686]. The consequences of the repair scenario should be studied (the influence on future maintenance and replacement scenarios, and the impacts on building performance).
*Rules from:*	*EN 15978: 7.4.4.1 General 7.4.4.4 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 6.3.4.4.2 – B3 Reparation 7.3.3.1 B1-B5 use stage related to the building fabric Annex A
*Guidance*	The overall repair scenario should be consistent with respect to the building structure (e.g. replacement of coating is mandatory if repairing the support).Figure 17: Replacement cycles [EN 15804]The boundaries of the repair and maintenance modules should be similar in the case of comparison (refer to ‘Repair with complete LCA’ for further guidance).It is recommended that sensitivity analysis be used when comparing different scenarios.