| Walls and vertical partitions |
Internal insulation behind a lining partition
| Application | I | S | O | L | Remarks |
| Type II or III wall lining | 1 | 1 | 2 | 2 | DTU 20.1 and DTU 23.1 |
| Type I or IV wall lining | 1 | 1 | 1 | 2 |
Internal insulation using a lining system
| Application | I | S | O | L | Remarks |
| Insulation factory-bonded to one or two plasterboards | 1 | 2 | 2 | 3 | DTU 25.42 |
External insulation: siding, insulated siding, weatherboarding
| Application | I | S | O | L | Remarks |
| Insulation inserted into exterior wall siding, traditional siding | 1 | 1 | 2 | 2 | DTU 41.2, Siding SOW |
| Insulation for use with insulated siding | 2 | 4 | 3 | 4 | Technical Assessments and Technical Application Documents |
| Insulation for use with weatherboarding | 3 | 1 | 2 | 2 | Technical Assessments and Technical Application Documents |
External insulation beneath render
| Application | I | S | O | L | Remarks |
| Bonded insulation covered with thin-layer reinforced or hydraulic render | 2 | 4 | 3 | 4 | EA and TAD |
| Mechanically-fixed insulation covered with thin-layer reinforced render | 2 | 5 | 3 | 4 | EA and TAD |
Cavity wall insulation
| Application | I | S | O | L | Remarks |
| Cavity wall insulation | 1 | 1 | 2 | 2 | DTU 20.1 |
Wood or metal stud wall insulation
| Application | I | S | O | L | Remarks |
| ORDER REF / Le Grand Livre de l'Isolation / page 251 figure 138 top: performances required to comply with thermal regulations | DTU 31.2 | ||||
| Double-skin siding insulation | Professional rules |
Prefabricated concrete panel insulation
| Application | I | S | O | L | Remarks |
| Prefabricated concrete panel insulation | 2 | 1 | 2 | 3 | Technical Assessments and Technical Application Documents |
