Roofing Construction & Estimating
Table of Contents

Introduction | Preview A Chapter | Back Cover

1   Measuring and Calculating Roofs, 5
     Level Roofs, 7
     Sloped Roofs, 10
     How to Measure Roof Slope, 12
     Perimeter of a Sloped Roof, 17
     Net Versus Gross Roof Area, 17
     Calculating Total Net Roof Area, 18
     Roof Overhangs, Hips and Valleys, 21
     Length of Ridge (Hip Roofs), 22

2   Roof Sheathing, Decking and Loading, 23
     Check the Framing, 23
     Solid Roof Sheathing, 24
     Spaced Board Sheathing, 29
     Roof Decking, 32
     Loading the Roof, 32
     Estimating Roof Sheathing, 34

3  Underlayment on Sloping Roofs, 35
     Saturated Felt Underlayment, 36
     Saturated Fiberglass Underlayment, 36
     Underlayment Requirements, 37
     Drip Edge, 40
     Installing Underlayment, 43
     Estimating Underlayment Quantities, 49
     Interlayment (Lacing), 57
     Eaves Flashing (Ice Shield or Water Shield), 61
     Valley Flashing, 64

4   Asphalt Shingles, 73
     UL Ratings for Shingles, 75
     Deck Requirements, 76
     Asphalt Strip Shingles, 78
     Flashing at Chimneys and Other Vertical Structures, 96
     Fasteners, 106
     Number of Shingles Required per Square, 108
     Number of Shingle Courses, 109
     Estimating Asphalt Strip Shingle Quantities, 113
     Ridge and Hip Units, 114
     Estimating Ribbon-Course Quantities, 124
     Individual Shingles, 127
     Estimating Asphalt Shingle Roofing Costs, 130

5   Mineral Surfaced Roll Roofing, 131
     Installing Mineral-Surfaced Roll Roofing, 133
     Valley Flashing, 134
     Estimating Mineral-Surfaced Roll Roofing, 144
     Waste from Non-conforming Roof Layout, 146
     Estimating Mineral-Surfaced Roll Roofing Costs, 157

6   Wood Shingles and Shakes, 159
     Installing Wood Shingles and Shakes, 164
     Covering Capacity of Shakes, 174
     Covering Capacity of Wood Shingles, 174
     Estimating Wood Shingle and Shake Quantities, 176
     Staggered Patterns, 185
     Sidewall Shakes and Wood Shingles, 185
     Roof Junctures, 192
     Estimating Wood Shingle Roofing Costs, 196

7   Tile Roofing, 197
     Underlayment Under Tile Roof Coverings, 199
     Installing Roof Tiles, 200
     The Starter Course, 202
     Fastening Roofing Tiles, 204
     Flashing at Vertical Walls, 217
     Replacing Broken Tiles, 224
     Estimating Tile Quantities, 225
     Estimating Total Tile Roofing Costs, 229

8   Slate Roofing, 231
     Slate Size, Color and Texture, 231
     Felt Underlayment, 234
     Installation on a Sloping Roof, 234
     Fasteners, 244
     Flashing, 245
     Estimating Slate Quantities, 249
     Estimating Slate Roofing Costs, 254

9   Metal Roofing and Siding, 255
     Modern Metal Panel Systems, 256
     Installing Metal Roofing Panels, 257
     Job-Fabricated Seams, 263
     Estimating Metal Roofing and Siding, 269
     Steel Roofing and Siding Quantities, 270
     Ribbed Metal Panel Quantities, 271
     Miscellaneous Metal Roofing Quantities, 275

10 Built Up Roofing, 291
     Roof Slopes, 292
     Substrate Design, 292
     Back Nailing, 297
     Base Sheets (Vapor Retarders), 298
     Roofing Membranes, 300
     Hot Bitumens, 303
     Cold-applied Bitumens, 305
     Surface Aggregate, 306
     Smooth-surface Roofing, 308
     Cap Sheets, 308
     Aluminum Roof Coatings, 309
     Phasing, 310
     Cant Strips, 311
     Temporary Roofs, 313
     Roof Traffic Pads, 314
     Water-retaining Roofs, 315
     Flashing on Flat Roofs, 315
     Roof Expansion Joints, 319
     Estimating BUR Systems, 323
     Testing BUR Systems, 327
     Built-up Roofing Warranties, 327
     Built-up Roofing Repairs and Re-roofing, 329

11 Elastomeric Roofing, 333
     The Advantages of Elastomeric Systems, 334
     Liquid-applied Elastomers, 335
     Single-Ply Roofing Systems, 338
     EPDM Elastomeric Systems, 337
     CPE Elastomeric Roofing, 342
     CSPE Elastomeric Roofing, 342
     Hypalon Roofing, 343
     PVC Elastomeric Roofing, 343
     Composite Roofing Systems, 343
     Flashings for Elastomeric Roofs, 344
     Estimating Elastomeric Roofing, 345

12 Insulation, Vapor Retarders and Waterproofing, 347
     The Benefits of Insulation, 347
     Insulation Materials, 348
     Reducing Heat Loss, 355
     Insulation Values, 361
     Vapor Barriers, 362
     Weatherproofing Existing Homes, 364
     Caulking and Sealants, 364
     Wall Flashing, 370
     Waterproofing, 37l
     Dampproofing, 377

13 Roofing Repair and Maintenance, 381
     Finding the Source of Leaks, 381
     Repairing Leaks, 384
     Roof Maintenance, 386
     Assessing Hail Damage, 388
     Roofing Demolition, 390
     Re-Roofing, 394
     Estimating Re-Roofing Quantities, 401
     Attic Ventilation, 402
     Gutters and Downspouts, 407

14 Estimating (and Maximizing) Production Rates, 411
     Labor Unit Prices, 411
     Estimating with Published Prices, 415
     Roofing Labor Tips, 420

Appendix A Roof Slope Factors, 428

Appendix B Valley Length Factors, 429

Appendix C Equations Used in This Book, 430

Index, 436

Introduction | Preview A Chapter | Back Cover

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