- L1 Ground treatment and retention
- L2 Complete construction entities & components
- L3 Structural space & division products
- L4 Access, barrier & circulation products
- L5 Coverings, claddings, linings
- Wall tiles
- Wall cladding panels, slabs
- Wall cladding sheets
- Wall panelling
- Exterior wall renders, coatings
- Roof tiles and slates
- Roof cladding sheets
- Roof membranes
- Roofs: Ancillary products
- Floating floor systems
- Floor tiles
- Paving and external tiles
- Floor Screeds
- Floor covering sheets, flexible sheets
- Carpeting
- Entrance matting
- Ceiling tiles
- Plaster
- L6 General purpose construction fabric products
- L7 Services
- L8 Fixtures & fittings
