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This article provides a simple, step-by-step guide designed to help you find the roofing contractor who's right for you. When you need to repair your roof or replace roof coverings on a building, this article gives advice to assist in choosing a roofing contractor - by Jessie Srader, with edits and additions by DJF. Whatever your roofing repair or replacement needs, you need a qualified professional roofing contractor you can trust.

This means finding a roofing contractor who knows good roofing practices, roof flashing details, how to handle problem spots on building roofs, and alternative roof covering products: shingle types, grades, colors, low slope roofing, flat roofing materials, etc. A competent roofer will provide you with sound advice on products, reasonable explanation of procedures, and, most important-solid results - no leaks, and a durable roof. It's difficult to determine the capabilities and reliability of a contractor.

Readers should also see How to Get the Best Roofing Job for a simple basic outline of the key ingredients to a good roofing job and a long lasting roof. Also see ROOFING INSPECTION & REPAIR. Our photo (page top) shows lost shingles from an asphalt shingle roof - possibly due to improper nailing.

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STEP 1: FINDING A ROOFER - Beginning a search for a roofing contractor

Any Home Improvement is a complex combination of elements, the success of which depends on the quality of materials, installation and over-all construction.

There are many ways to start your search for the contractor who meets your individual needs. Referrals are obviously the best source for names of credible companies. Ask friends and family members who they have used in the past.

Contact your local Chamber of Commerce about contractors who are active in the community. The Better Business Bureau, state and local licensing authorities, local trade associations and your local yellow page directory are also excellent sources of information. As well as local suppliers of building products.

STEP 2: CHOOSING A ROOFER - Meeting and evaluating Potential Roofing Contractors

After you have compiled a list of possible contractors, take time to evaluate each one carefully. A professional contractor will be happy to provide any information you may require.

Many homeowners have been mystified by the seeming lack of interest and response from the contractors they call. To get a contractor to respond to your call, tell him you are shopping around, but are only interviewing three contractors, not ten.

A contractor is shopping for good jobs that will make a fair profit and bring future referrals . Many contractors have had experiences with unreasonable or dishonest homeowners. Therefore, they look for warning signs of customer problems during the initial job interview.

Set up a meeting to discuss your needs and their qualifications, and be sure to pay close attention to the attitude of the company representative. Good contractors take pride in their work and will be enthusiastic about the possibility of helping you with your problems. If you feel confident that the contractor is truly interested in your project, ask for the company's vital statistics-specific business information which will help you make your final decision.

• Business Name and Address: A good, professional contractor will provide the telephone number. These are essential when checking on the company's previous business dealings.
• Experience: The training and experience of a contractor, as well as the age of his or her company, will help you determine their ability to successfully complete your project.
• Licensing/Bonding: Some states require special licensing for contractors.
• Ask for business license numbers and information on the company which bonds the contractor. Then check with local authorities to see that the company compiles with regulations.
• Insurance Coverage: A contractor should carry worker's compensation and general liability insurance. Request the name and address of the insurance carrier, along with a copy of the company's insurance certificate. Beware of low bids which are a result of incomplete insurance coverage and workman's compensation.
• Professional References: Your contractor's past can help determine your future.
• Ask for credit references, banking information and a list of completed projects including the names and telephone numbers of previous clients.
• Company Philosophy: Discuss application techniques and workmanship guarantees.
• Does the contractor stand behind his work ?

This article continues with steps 3, 4, and 5 that you can read using links just below.

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CHOOSING A ROOFING CONTRACTOR
  STEP 1: FINDING A ROOFER
  STEP 2: CHOOSING A ROOFING CONTRACTOR
  STEP 3: CHOOSING ROOF MATERIAL
  STEP 4: NEGOTIATE ROOFING CONTRACT
  STEP 5: LETTING THE ROOFER ROOF
  STEP 6: RESOLVING ROOF JOB PROBLEMS

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• Fiberglass Asphalt Shingle Failures Information and Claims GAF & Other Shingle Failures Website; Thermal Splitting of Asphalt Shingles & other shingle failures
• Fire Retardant Treated FRT Plywood Failures inspection, detection, testing of defective FRT plywood roof sheathing
• Fiberglass Asphalt Shingle Failures Information and Claims GAF & Other Shingle Failures Website; Thermal Splitting of Asphalt Shingles & other shingle failures
• Fire Retardant Treated FRT Plywood Failures inspection, detection, testing of defective FRT plywood roof sheathing
• Slate Roofs: How to Inspect and Repair Slate Roofs - Detailed Procedures for Inspection and Repair of Slate Roofs - ASHI Technical Journal, 1991, Updated 2006
• Slate Roofs: Inspecting and Evaluating Slate Roofs Hudson Valley ASHI seminar content

Books & Articles on Building & Environmental Inspection, Testing, Diagnosis, & Repair

• Our recommended books about building & mechanical systems design, inspection, problem diagnosis, and repair, and about indoor environment and IAQ testing, diagnosis, and cleanup are at the InspectAPedia Bookstore. Also see our Book Reviews - InspectAPedia.

• Best Practices Guide to Residential Construction, by Steven Bliss. John Wiley & Sons, 2006. ISBN-10: 0471648361, ISBN-13: 978-0471648369, Hardcover: 320 pages, available from Amazon.com and also Wiley.com. See our book review of this publication.
• Decks and Porches, the JLC Guide to, Best Practices for Outdoor Spaces, Steve Bliss (Editor), The Journal of Light Construction, Williston VT, 2010 ISBN 10: 1-928580-42-4, ISBN 13: 978-1-928580-42-3, available from Amazon.com
• The Journal of Light Construction has generously given reprint permission to InspectAPedia.com for this article. All rights and contents are ©Journal of Light Construction and may not be reproduced in any form.
• Architectural elements: the technological revolution: Galvanized iron roof plates and corrugated sheets; cast iron facades, columns, door and window caps, ... (American historical catalog collection), Diana S Waite, available used out of Amazon.
• Asphalt Roofing Residential Manual,
• Building Pathology, Deterioration, Diagnostics, and Intervention, Samuel Y. Harris, P.E., AIA, Esq., ISBN 0-471-33172-4, John Wiley & Sons, 2001 [General building science-DF] ISBN-10: 0471331724 ISBN-13: 978-0471331728
• Building Pathology: Principles and Practice, David Watt, Wiley-Blackwell; 2 edition (March 7, 2008) ISBN-10: 1405161035 ISBN-13: 978-1405161039
• Built-Up Roof Systems, Manual, C.W. Griffin, Mcgraw-Hill (Tx); 2nd edition (July 1982), ISBN-10: 0070247838, ISBN-13: 978-0070247833
• Concrete Folded Plate Roofs, C. Wilby PhD BSc CEng FICE FIStructE (Author), Butterworth-Heinemann, 1998, ISBN-10: 0340662662, ISBN-13: 978-0340662663
• Concrete Shell Roofs, C. Wilby PhD BSc CEng FICE FIStructE (Author),
• Concrete Dome Roofs (Longman Concrete Design and Construction Series),
• Concrete Roofing Tile, History of the, Batsford, 1959, AISN B000HLLOUC (availble used)
• Copper Roofing, by CDA
• Copper Roofing, Master specifications for copper roofing and sheet metal work in building construction: Institutional, commercial, industrial, I.E. Anderson, 1961 (hard to find)
• Corrugated Iron, Building on the Frontier, Simon Holloway
• Green Roof Plants: A Resource and Planting Guide, Edmund C. Snodgrass, Lucie L. Snodgrass, Timber Press, Incorporated, 2006, ISBN-10: 0881927872, ISBN-13: 978-0881927870. The text covers moisture needs, heat tolerance, hardiness, bloom color, foliage characteristics, and height of 350 species and cultivars.
• Green Roof Construction and Maintenance, Kelley Luckett, McGraw-Hill Professional, 2009, ISBN-10: 007160880X, ISBN-13: 978-0071608800, quoting: Key questions to ask at each stage of the green building process Tested tips and techniques for successful structural design Construction methods for new and existing buildings Information on insulation, drainage, detailing, irrigation, and plant selection Details on optimal soil formulation Illustrations featuring various stages of construction Best practices for green roof maintenance A survey of environmental benefits, including evapo-transpiration, storm-water management, habitat restoration, and improvement of air quality Tips on the LEED design and certification process Considerations for assessing return on investment Color photographs of successfully installed green roofs Useful checklists, tables, and charts
• Handbook of Building Crafts in Conservation, Jack Bower, Ed., Van Nostrand Reinhold Company, NY 1981 ISBN 0-442-2135-3 Library of Congress Catalog Card Nr. 81-50643.
• Historic Preservation Technology: A Primer, Robert A. Young, Wiley (March 21, 2008) ISBN-10: 0471788368 ISBN-13: 978-0471788362
• Historic Slate Roofs : With How-to Info and Specifications, Tina Skinner (Ed), Schiffer Publishing, 2008, ISBN-10: 0764330012 , ISBN-13: 978-0764330018
• Low Slope Roofing, Manual of, 4th Ed., C.W. Griffin, Richard Fricklas, McGraw-Hill Professional; 4 edition, 2006, ISBN-10: 007145828X, ISBN-13: 978-0071458283
  • Roof failure causes in depth (and specific methods for avoiding them)
  • Roof design fundamentals and flourishes, based on voluminous industry research and experience
  • New technologies and materials -- using them safely and correctly
  • Comprehensive coverage of all major roofing systems pecifications, inspection, and maintenance tools for roofing work
• Metal Roofing, an Illustrated Guide, R.A. Knowlton , [metal shingle roofs],
• Patio Roofs, how to build, Sunset Books
• Problems in Roofing Design, B. Harrison McCampbell, Butterworth Heineman, 1991 ISBN 0-7506-9162-X (available used)
• Roofing The Right Way, Steven Bolt, McGraw-Hill Professional; 3rd Ed (1996), ISBN-10: 0070066507, ISBN-13: 978-0070066502
• Slate Roofs, National Slate Association, 1926, reprinted 1977 by Vermont Structural Slate Co., Inc., Fair Haven, VT 05743, 802-265-4933/34. (We recommend this book if you can find it. It has gone in and out of print on occasion.)
• Roof Tiling & Slating, a Practical Guide, Kevin Taylor, Crowood Press (2008), ISBN 978-1847970237,
  If you have never fixed a roof tile or slate before but have wondered how to go about repairing or replacing them, then this is the book for you. Many of the technical books about roof tiling and slating are rather vague and conveniently ignore some of the trickier problems and how they can be resolved. In Roof Tiling and Slating, the author rejects this cautious approach. Kevin Taylor uses both his extensive knowledge of the trade and his ability to explain the subject in easily understandable terms, to demonstrate how to carry out the work safely to a high standard, using tried and tested methods. 
  This clay roof tile guide considers the various types of tiles, slates, and roofing materials on the market as well as their uses, how to estimate the required quantities, and where to buy them. It also discusses how to check and assess a roof and how to identify and rectify problems; describes how to efficiently "set out" roofs from small, simple jobs to larger and more complicated projects, thus making the work quicker, simpler, and neater; examines the correct and the incorrect ways of installing background materials such as underlay, battens, and valley liners; explains how to install interlocking tiles, plain tiles, and artificial and natural slates; covers both modern and traditional methods and skills, including cutting materials by hand without the assistance of power tools; and provides invaluable guidance on repairs and maintenance issues, and highlights common mistakes and how they can be avoided. The author, Kevin Taylor, works for the National Federation of Roofing Contractors as a technical manager presenting technical advice and providing education and training for young roofers.
• The Slate Roof Bible, Joseph Jenkins, www.jenkinsslate.com, 143 Forest Lane, PO Box 607, Grove City, PA 16127 - 866-641-7141 (We recommend this book).
• Slate Roofing in Canada (Studi4es in archaeology, architecture, and history),
• Smart Guide: Roofing: Step-by-Step Projects, Creative Homeowner (Ed), 2004, ISBN-10: 1580111491, ISBN-13: 978-1580111492
• Solar heating, radiative cooling and thermal movement: Their effects on built-up roofing (United States. National Bureau of Standards. Technical note), William C Cullen, Superintendent of Documents, U.S. Govt. Print. Off (1963), ASIN: B0007FTV2Q
• Tile Roofs of Alfred: A Clay Tradition in Alfred NY
• "Weather-Resistive Barriers [copy on file as /interiors/Weather_Resistant_Barriers_DOE.pdf ] - ", how to select and install housewrap and other types of weather resistive barriers, U.S. DOE
• Wood Shingle Roofs, Care and Maintenance of wood shingle and shake roofs (EC), Stanley S. Niemiec (out of print)
• ...