Goss's roofing ready reckoner : from timberwork to tiles including metric cutting and sizing tables for timber roof members

Now fully revised, the third edition of this renowned book by Ralph Goss has been made even more valuable with the addition of many new illustrations, and takes into account not only traditional cut roof construction but also modern trussed rafter roof assembly methods. Revised by C.N. Mindham, author of __Roof Construction and Loft Conversion__, this new edition contains many new drawings of constructional details for which his own book is much acclaimed. Information is now given on wall plate and gable end strapping, wind bracing, truss clips and other roofing metalwork, as well as on the modern tools and instruments necessary to carry out the construction work. Proven as a book for professionals, the book is now equally suitable for the keen DIY enthusiast as well as the professional. All information is given in both metric and imperial units. GOSS'S ROOFING READY RECKONER 3 Contents 7 1 Introduction and Acknowledgements 13 ACKNOWLEDGEMENTS 14 2 Roofing terminology 15 3 Calculating the size of timber members 21 STRENGTH AND SECTION SIZE CALCULATIONS 23 HOW DO WE CALCULATE THE LOADING ON THE ROOF? 23 TIMBER MEMBER SIZING DESIGN: AN EXAMPLE 24 COST CONSIDERATION 31 4 Calculating the length and cutting angles of timber members: data tables 5°–75° 32 THE PITCH 35 The Run of the Rafter 35 The Rise of the Rafter 35 USING THE TABLES TO CUT A COMMON RAFTER 35 Do Not Cut Yet! 39 Now Cut the First Rafter 39 HIP JACK RAFTERS 40 HIP RAFTERS 42 Backing of Hips 42 VALLEY JACK RAFTERS 44 THE RIDGE 44 PURLINS 46 5 Wall Plates – Strapping and Gable Strapping 121 6 Wind bracing and openings for dormers and roof windows 123 OPENINGS FOR DORMERS AND ROOF WINDOWS 125 Traditional Cut Roofs (not Trussed Rafter Construction) 125 Trussed Rafter Roofs 128 7 Roofing metalwork and fixings 131 NAILS, BOLTS AND SCREWS 133 8 Engineered timber roofing components and prefabricated roofs 135 TRUSSED RAFTERS 135 SPANDREL PANELS 137 CRANE-ON ROOF ASSEMBLIES – TRUSSED RAFTERS 139 CRANE-ON ROOFS – STRUCTURAL PANELS 140 CRANE-ON ROOF ASSEMBLIES – STRUCTURAL INSULATED PANELS 140 ATTIC TO ROOM-IN-THE-ROOF CONVERSION 142 9 Roof coverings – underlay, battens and tiles 146 UNDERLAY 146 BATTENS 150 INSULATION AND VENTILATION 152 Warning! 153 Roof Void Ventilation 156 How do we Decide Which Roof Type to Specify? 161 Economic Considerations 162 CHOOSING THE ROOF COVERING 166 Pitch or Slope of Roof 166 Degree of Exposure to Wind and Rain 168 Loading on the Roof 169 Aesthetics 170 Local Planning Requirements 170 Proposed Life of the Building 172 Building Regulation Requirements – Material specification 172 Cost 173 BUILDING REGULATIONS – THERMAL PERFORMANCE 174 Building Control 174 Building Control System in England 174 The building regulations – thermal performance requirements 176 Model designs 181 FLAT ROOF CONSTRUCTION 189 10 Roof coverings – building detail drawings 191 THE NEW BS 5534:2014 191 MANUFACTURER’S SPECIFICATION 192 HIPS, RIDGES, VERGES AND VALLEYS – TRADITIONAL AND NEW METHODS OF CONSTRUCTION 192 ROOFING PUTTIES 199 NATURAL SLATES 201 CONCRETE INTERLOCKING TILES 204 PLAIN AND PEG TILES 205 Clay Tiles 205 Laying Plain Tiles 206 Mortar Bedding 207 Ventilation 208 Plain Tile Valley Detail 208 Plain Tile Sprocket Eaves Detail 209 ASPHALT SHINGLES 210 Structure 210 Ventilation 211 METAL TILES 213 Ventilation 213 LEAD SUBSTITUTES 214 11 Solar panels 217 PLANNING AND ROOF SUITABILITY 217 ROOF CONSTRUCTION 218 FIXING THE PANELS 219 POSSIBLE IMPROVED FIXING 220 VARIATIONS ON PANEL DESIGN 223 12 Sheds and outbuildings 224 PERMITTED DEVELOPMENT 224 TYPES OF PERMITTED BUILDING 224 DESIGN 227 THE STRUCTURE 227 THE MONO-PITCH ROOF 228 THE DUAL-PITCH ROOF 228 ROOF COVERINGS 230 MAKE YOUR NEW BUILDING SAVE MONEY! 232 13 Tools and equipment 233 OBTAINING INFORMATION FROM THE DRAWING 233 TO CUT THE ROOF 234 SETTING UP THE ROOF STRUCTURE 234 ROOF COVERINGS 235 14 Health & Safety Considerations 236 ACCESS TO THE ROOF 236 BASIC PRINCIPLES 237 RESTORATION AND RENOVATION OF EXISTING ROOF STRUCTURES 237 NEWLY CONSTRUCTED ROOFS 238 THE ROOF COVERING 238 CONCLUSION 239 Bibliography 241 ATTIC ROOF TRUSSES AND LOFT CONVERSION COMPONENTS 241 For list of trussed rafter manufacturers: 241 For details of “JJI-Loft”: 241 For details of “JES” Joist End Support: 242 BUILDING REGULATIONS 242 BUILDING RESEARCH ESTABLISHMENT PUBLICATIONS AND BRITISH STANDARDS 242 DESIGN & CONSTRUCTION 243 DRY ROOFING SYSTEMS: Ridge, Valley, Verge and Hip 244 INSULATION 245 INTEGRATED SOLAR PANELS AND FIXINGS 245 LEAD SUBSTITUTES 246 METAL ROOF TILES 247 ROOFING METALWORK 248 ROOFING PUTTIES 248 ROOF TILES AND SLATES 248 ROOF TILE AND SLATE FIXING 249 ROOF VENTILATION 250 STRUCTURAL ROOFING PANEL/SPANDREL PANELS 250 TIMBER ‘I’ BEAMS/JOISTS 251 UNDERLAYS 252 Index 255 EULA 260

Goss's Roofing Ready Reckoner provides cutting angle and lengths for traditional 'cut' roofs and design tables for timber sizing, based on BS5268 'Structural use of timber' and now including a comparison of timber sizes using Eurocode 5 'Design of Timber Structures'. Additional information is provided on wall plate and gable strapping, wind bracing, truss clips and other roofing metalwork, plus information on tools, equipment and health and safety matters. Detailed drawings for tiling, slating and other roof coverings are included, with fixing requirements revised to BS 5534:2014. Information on lead substitutes and roofing putties is also provided. Design of warm and cold roofs is fully covered, including ventilation and insulation requirements. The fifth edition also includes new chapters on engineered timber roofing components, solar panel fixing and outbuilding roofs.

Now fully revised, the third edition of this renowned book by Ralph Goss has been made even more valuable with the addition of many new illustrations, and takes into account not only traditional cut roof construction but also modern trussed rafter roof assembly methods.

Revised by C.N. Mindham, author of Roof Construction and Loft Conversion, this new edition contains many new drawings of constructional details for which his own book is much acclaimed. Information is now given on wall plate and gable end strapping, wind bracing, truss clips and other roofing metalwork, as well as on the modern tools and instruments necessary to carry out the construction work.

Proven as a book for professionals, the book is now equally suitable for the keen DIY enthusiast as well as the professional. All information is given in both metric and imperial units.

Goss s Roofing Ready Reckoner provides cutting angle and lengths for traditional cut roofs and design tables for timber sizing, based on BS5268 Structural use of timber and now including a comparison of timber sizes using Eurocode 5 Design of Timber Structures . The aim of this book is to provide a quick and easily usable reference for those constructing roofs for new buildings and extensions using cut roof or trussed rafter construction.