BS CP144-4(1970) : AMD 6161

Foreword
1. GENERAL
1.1 Scope
1.2 Definitions
1.3 Exchange of information
1.4 Time schedule
2. MATERIALS
2.1 Mastic asphalt
2.2 Isolating membrane
2.3 Metal lathing
2.4 Sand for rubbing
2.5 Screeds
2.6 Insulating materials
2.7 Insulated roof decks
2.8 Vapour barrier
2.9 Solar reflective treatment
2.10 Bitumen-based bonding compound
2.11 Bitumen dressing compound
2.12 Flashings
2.13 Aluminium edgings
3. DESIGN CONSIDERATIONS
3.1 General
3.2 Weather resistance
3.3 Fire protection
3.4 Thermal insulation
3.5 Ventilation of roofs
3.6 Base to receive asphalt
3.7 Isolating membrane
3.8 Number of coats and thickness
3.9 Details
3.10 Solar reflectivity
3.11 Surface finishes
4. METHOD OF LAYING AND WORKMANSHIP
4.1 Siting of plant
4.2 Protection and storage of materials
4.3 Cooperation by other trades
4.4 Setting out the work
4.5 Remelting
4.6 Technique of laying
4.7 Associated details
5. INSPECTION AND MAINTENANCE
5.1 Inspection
5.2 Maintenance
TABLES
1. Weights of metal flashings, etc.
FIGURES
1. Mastic asphalt laid on screeded roof and mastic
      asphalt skirting to brick wall
2. Mastic asphalt laid on screeded roof and mastic
      asphalt skirting to concrete wall
3. Mastic asphalt laid on screeded roof with mastic
      asphalt skirting and D.P.C. to wall
4. Mastic asphalt laid on timber roof and mastic
      asphalt skirting on free-standing kerb
5. Mastic asphalt laid on screeded roof with tiled
      finish
6. Mastic asphalt laid on organic insulating material
      with mastic asphalt skirting and D.P.C. to wall
7. Mastic asphalt finish at eaves in conjunction
      with metal flashing to gutter
8. Solid mastic asphalt water check and drip apron
      to verge of roof
9. Mastic asphalt finish at verges with aluminium
      edging trim
10. Mastic asphalt finish to concrete kerb for wood
      sill
11. Mastic asphalt finish to metal sill
12. Mastic asphalt lining to roof reservoir and kerb
13. Mastic asphalt finish to concrete kerb used as a
      water check
14. Mastic asphalt lined rainwater outlet through
      parapet wall
15. Expansion joint in flat roof twin kerb type
16. Outlet with welted lead slate and sleeve
17. Mastic asphalt finish to cast iron roof outlet
18. Mastic asphalt finish to C.I. pipe passing through
      a concrete roof
19. Mastic asphalt finish to metal standards
20. Ventilator for use with lightweight screeds

Explains the use of mastic asphalt as a roof covering, including situations designed to carry traffic, such as a roof car park. Covers recommendations for the preparation of the base to which the mastic asphalt is applied and sets out the site practice. Includes recommendations concerning various accessory materials with mastic asphalt for roofing.