Module B, corresponding to the use of the product in a building, is itself divided into 7 modules:
- Module B1 covers operations related to product use (excluding water and energy use);
- Module B2 covers maintenance operations;
- Module B3 covers repair operations;
- Module B4 covers replacement operations;
- Module B5 covers refurbishment operations;
- Module B6 covers operations related to operational energy use;
- Module B7 covers operations related to operational water use;
In order not to count energy and water consumption twice, the information given in modules B6 and B7 should not be taken into account in the building LCA.