1 Introduction and acknowledgements 1 Acknowledgements 2 2 Roofing terminology 3 3 Calculating the size of timber members 9 Strength and section size calculations 11 How do we calculate the loading on the roof? 11 Timber member sizing design: an example 12 Cost consideration 19 4 Calculating the length and cutting angles of timber members: data tables 5?-75? 20 The pitch 23 Using the tables to cut a common rafter 23 Hip jack rafters 28 Hip rafters 30 Valley jack rafters 32 The ridge 32 Purlins 34 5 Wall plates - strapping and gable strapping 109 6 Wind bracing and openings for dormers and roof windows 111 Openings for dormers and roof windows 113 7 Roofing metalwork and fixings 119 Nails, bolts and screws 121 8 Engineered timber roofing components and prefabricated roofs 123 Trussed rafters 123 Spandrel panels 125 Crane-on roof assemblies - trussed rafters 127 Crane-on roofs - structural panels 128 Crane-on roof assemblies - structural insulated panels 128 Attic to room-in-the-roof conversion 130 9 Roof coverings - underlay, battens and tiles 134 Underlay 134 Battens 138 Insulation and ventilation 140 Choosing the roof covering 154 Building regulations - thermal performance 162 10 Roof coverings - building detail drawings 179 The new BS 5534:2014 179 Manufacturer's specification 180 Hips, ridges, verges and valleys - traditional and new methods of construction 180 Roofing putties 187 Natural slates 189 Concrete interlocking tiles 192 Plain and peg tiles 193 Asphalt shingles 198 Metal tiles 201 Lead substitutes 202 11 Solar panels 205 Planning and roof suitability 205 Roof construction 206 Fixing the panels 207 Possible improved fixing 208 Variations on panel design 211 12 Sheds and outbuildings 212 Permitted development 212 Types of permitted building 212 Design 215 The structure 215 The mono-pitch roof 216 The dual-pitch roof 216 Roof coverings 218 Make your new building save money! 220 13 Tools and equipment 221 Obtaining information from the drawing 221 To cut the roof 222 Setting up the roof structure 222 Roof coverings 223 14 Health & safety considerations 224 Access to the roof 224 Basic principles 225 Restoration and renovation of existing roof structures 225 Newly constructed roofs 226 The roof covering 226 Conclusion 227 Bibliography 229 Index 243.