BS CP143-15(1973) : 1973

Foreword
1. GENERAL
1.1 Scope
1.2 Definitions
1.3 Exchange of information and time schedule
2. MATERIALS AND FASTENINGS
2.1 Aluminium
2.2 Underlays
2.3 Timber
2.4 Nails
2.5 Screws and bolts
3. Design considerations
3.1 Characteristics of the material
3.2 Weight of aluminium roof coverings
3.3 Substructure
3.4 Underlays
3.5 Clips
3.6 Roofing systems
3.7 Traditional standing seam and batten roll systems
3.8 Long strip system
3.9 Falls, drips and cross welts on roofs
3.10 Falls and drips in gutters
3.11 Special details and features
3.12 Condensation
3.13 Fire protection
3.14 Protection against lightning
4. LAYING PROCEDURE
4.1 Storage and protection of aluminium
4.2 Preparatory work
4.3 Underlays
4.4 Technique of laying aluminium sheeting
4.5 Cesspools
4.6 Gutters
4.7 Aprons
4.8 Main roof covering
4.9 Cover flashings
4.10 Drainage
4.11 Other building operations
5. INSPECTION AND TESTS
5.1 Materials
5.2 Substructures
5.3 Underlays
5.4 Final inspection
5.5 Maintenance
TABLES
1. Tensile strength of materials complying with the
      requirements of BS 1470 in tempers recommended for
      roofing
2. Some physical properties of 99 grade aluminium
3. Roofing sizes of strip in coil
4. Recommended tempers for aluminium of different
      purities and NS3 alloy
5. Weights of aluminium roof coverings
6. Thickness and weight of aluminium sheet and strip
7. Pitched roofs over 10 deg pitch: maximum length
      of sheet or strip
8. Flat roofs up to and including 10 deg pitch:
      maximum length of sheet or strip
9. Recommended maximum width of strip for long strip
      system
10. Recommended maximum lengths of linings for gutters
      of various sizes and widths
FIGURES
1. General layout and details of the standing seam
      system applied to flat roofs
2. General layout and details of the standing seam
      system applied to pitched roofs
3. Plain clips and expansion clips
4. Stages in forming standing seam
5. Single-lock welt
6. Double-lock welt
7. Standing seam: upstand at wall abutment
8. Detail: standing seam at ridge roll; traditional
      and long strip systems
9. Eaves detail: traditional systems
10. Verge detail: traditional and long strip systems
11. Expansion detail at eaves: long strip system
12. Detail of drip
13. General layout and details of batten roll system
      applied to flat roofs
14. General layout and details of batten roll system
      applied to pitched roofs
15. Stages in forming batten roll
16. Detail of ridge roll
17. Stages in forming batten roll at upstand
18. Gutter for slated or tiles roof
19. Gutter between slated roofs
20. Slated or tiles roof discharging on to aluminium
      flat roof
21. Aluminium roof discharging on to slated or tiled
      roof
22. Parapet gutter
23. Parapet gutter and chute or cesspool outlet
24. Detail: chimney weathering

Recommends the installation of aluminium fully supported roof and wall coverings. Includes information on appropriate alloys and forms of aluminium, durability, contact with other materials, sizes and weights of sheet and strip, protection and storage. Gutters and flashings are dealt with in so far as they form an integral part of the main roof covering. Does not apply to aluminium roof decking or deck units. Covers definitions, materials and fastenings, design considerations, laying procedure and inspection and tests. Includes several tables and figures.