BS 6915:1988

Foreword
Committees responsible
Specification
0 Introduction
1 Scope
2 Definitions
3 Materials and accessories
3.1 Lead sheet
3.2 Clips
3.3 Nails
3.4 Screws
3.5 Battens
3.6 Underlay
3.7 Solder
4 Roof construction: substructure
4.1 General
4.2 Timber
4.3 Concrete, screeds and masonry
4.4 Thermal insulation boards
5 Design considerations
5.1 Lead covering
5.2 Fixings
5.3 Gutters
5.4 Ancillary details
5.5 Preformed panels and wall coverings
6 Methods of laying and workmanship
6.1 Condition of substrate
6.2 Technique of laying
6.3 Wood-cored rolls
6.4 Hollow rolls
6.5 Welts
6.6 Standing seams
6.7 Drips
6.8 Laps
6.9 Flashings
6.10 Ridges and hips and apron flashings
6.11 Torus rolls
6.12 Staining
6.13 Completion
Appendix
A General information
Tables
1 Flat roofs: maximum spacing of joints for roof
      slopes up to and including 10 degrees
2 Pitched roofs: maximum spacing of joints for roof
      slopes above 10 degrees up to and including 80
      degrees
3 Wall, vertical and near vertical: maximum spacing
      of joints for roof slopes above 80 degrees
4 Gutters: lead dimensions
Figures
1 Wood-cored roll (with splash lap)
2 Wood-cored roll (with splash lap turned under)
3 Hollow roll
4 Welt
5 Standing seam
6 Drips
7 Laps
8 Box gutters
9 Catch pits
10 Chute outlet to box gutter
11 Internal outlets to gutters
12 Roll end at eaves
13 Cover flashings at abutments
14 Apron flashing at head of lean-to roof
15 Lapped rolls
16 Torus rolls
17 Preformed lead-faced panels
18 Preformed cladding: panels mounted in position
19 Preformed cladding: typical fixing details
20 Abutments: external and internal corners
21 Junction of cladding with flat roof
22 Head fixings
23 Retaining clips
24 Intermediate fixings
25 Leadwelded clip

External wall and roof surfaces. Materials, roof construction, design, workmanship, inspection and testing. Information on the properties of lead sheet in an appendix.