7.5 Module B4 – Replacement Written by Anh-Migrate on 21. October 2012. Posted in Existing buildings, New buildings. 7.5 Module B4 – Replacement B-11 Definition of the service life of a building product B-12 Replacement frequency. B-13 Replacement with screening LCA. B-14 Replacement with simplified LCA. B-15 Replacement with complete LCA. Lifecycle stage: B (all modules), Lifecycle stage: B4 Previous Next