363
Roof coverings

364
Roof cladding

351
ceiling constructions

352
Ceiling coverings

353
Ceiling cladding

331
Load-bearing exterior walls

334
Exterior doors and windows

335
Exterior wall cladding, exterior

338
Sun protection

321
Subsoil improvement

324
Subfloors and Floor Plates

325
Floor coverings

326
Building waterproofing