Roof shingle manufacturer certification programs for roofing contractors
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This website discusses how to get the best roofing job by outlining some very basic tips and listing
what's really important in assuring that the new roof does not leak and lasts as it should. At this website we also give an example of a "bad" roofing contractor,
discuss roofing contractor certifications such as the GAF Master EliteTM roofing contractor
certification program, and we give some simple tips on how to get a good roofing job.
Also see CHOOSING A ROOFER for a more complete outline of how to choose
a roofing contractor.
The photograph above shows a laminate-type roof shingle installed improperly on an irregular dome-shaped roof. (This was job was not done by a
GAF Master EliteTM or Other Certified Roofing Contractor.
The roofer who put these
shingles in place probably lacked proper training - something which some roof contractor certification programs are trying to address.
But don't assume that every "certified" roofer is one you want to do business with.
Workmanship:The best assurance that your new roof will not leak and that it will have a long life is to select a quality shingle product and to be certain that the shingles are installed absolutely correctly - good workmanship is what makes a roof shed water.
Shingle quality: we would not hesitate to buy a quality shingle product from any of the current roofing shingle manufacturers, including GAF, but
Shingle installation standards we would want to be sure that my installer applied them according to the best practices in the industry since otherwise any warranty will be voided anyway. The principal sources of asphalt shingle roofing installation standards are the National Roofing Contractors Association (NRCA's Roofing and Waterproofing Manual), and the Asphalt Roofing Manufacturer's Association (ARMA). There are also ASTM standards for roofing products.
Roofing contractor reputation and experience: Before hiring ANY roofing contractor we would check with the local better business bureau and would ask for references from local customers of the contractor.
Supervision during the roof shingle installation: we would want to be darn sure that the people actually doing the work are trained or at least supervised, continually, every day all day on the job, by a trained, experienced, roofing contractor. Too many roofing companies have a salesman or prime contractor who sells the job but send un-trained workers to put on the roof with minimal or no actual supervision.
Maintain your roof: with your roofing contractor, discuss regular roof inspections, the condition of your under-roof or attic ventilation, and what special problem spots may be on your roof, and what to do about them
Also see CHOOSING A ROOFER for a more complete outline of how to choose
a roofing contractor.
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Additional technical contributors & reference sources for this article are listed below.
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GAF Corporation: www.gaf.com/General/GAFintro_MAIN.asp is the company's website.
GAF Corporation history and derivation of the GAF name: www.fundinguniverse.com/company-histories/GAF-Corporation-Company-History.html you can read the history of the company and see the derivation of its name - General Analine and Film - though we doubt it's important in understanding modern roofing materials.
Consumers shopping for a roofing contractor should not be confused between marketing promise and contractor competence in any building field.
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.
The Home Reference Book - the Encyclopedia of Homes, Carson Dunlop & Associates, Toronto, Ontario, 2010, $69.00 U.S., is available from Carson Dunlop, and from the InspectAPedia bookstore. The 2010 edition of the Home Reference Book is a bound volume of more than 450 illustrated pages that assist home inspectors and home owners in the inspection and detection of problems on buildings. The text is intended as a reference guide to help building owners operate and maintain their home effectively. InspectAPedia.com ® author/editor Daniel Friedman is a contributing author. Field inspection worksheets are included at the back of the volume.
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.
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
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.Â
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).
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
"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
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