WOOD ROOF LIFE EXPECTANCY - CONTENTS: Wood roof life expectancy. Wood shingle life, wood shake life on roofs. Factors that determine the life expectancy of wood shingle or wood shake roofs. Wood shingle or wood shake roof life expectancy. Wood shingle or shake roof life, wood roof inspection, wood roo fleak detection, wood roof trouble diagnosis, roof repair.
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Wood roof life expectancy: Here we summarize the average life expectancy of wood roofs, including wood shingle roofs and wood shake roofs, and we list the factors that affect expected wood shingle/shake roof life. We photographed the wood shingle roofed home shown above in Frankfort, Germany in 1969 - Ed. See WOOD SHAKE & SHINGLE ROOFING where nearly every wood roof article listed there includes factors that will affect wood roof life.
How Long Will a Wood Shingle or Wood Shake Roof Last?
List of Factors Affecting the Life Expectancy of Wood Roof Shingles or Shakes
The combination of observations about wood roof condition, leaks, shingle or shake installation quality, condition of the shingles or shakes, WOOD ROOF WEAR / INSTALLATION DEFECTS and WOOD ROOF MOSS & LICHENS will allow an experienced inspector to estimate the "wear age" of a roof - that is, not its chronological age but the rough percent of typical life expectancy that remains for the roof.
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The typical life of a wood shingle roof is 30-40 years.
Similarly, a good quality, properly-installed wood shake roof has a life expectancy of 20-40 years.
But wood shingle or wood shake roof life expectancy varies considerably depending on
The wood shingle or wood shake grade or quality
How the shingles were installed
How the wood shingle or shake roof is ventilated. For example wood shingles installed on solid plywood roof decking can be expected to have a shorter life than the same shingles installed over skip sheathing or spaced nailers that provide plenty of ventilation. See our quote below from BEST ROOFING PRACTICES.
The pitch of the wood shingle or wood shake roof (its slope)
The wood shingle or wood shake roof's sun and weather exposure
The wood shingle or wood shake roof's exposure to overhanging trees or debris that may hold water on its surface
The wood shingle or wood shake roof's exposure to shade that may promote moss or lichens growth
Other than selecting a durable wood, the most important
factor in determining a wood roof’s longevity is its ability
to dry out from both top and bottom when wet. While this
was a natural feature of traditional installations over
spaced sheathing, new methods and products are required
for installation over solid sheathing. The two main
Create a system of spaced sheathing above the solid
sheathing using vertical and horizontal battens; or
Use a breathable underlayment applied over the
FAQs below discusses field reports of problems & solutions for this topic
Frequently Asked Questions (FAQs)
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Questions & answers or comments about the typical lifetime of wood shingle roofs or wood shake roofs.
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Niemiec, Stanley S., and Terence D. Brown. Care and maintenance of wood shingle and shake roofs. Extension Service, Oregon State University, 1988.
Mark Cramer Inspection Services Mark Cramer, Tampa Florida, Mr. Cramer is a past president of ASHI, the American Society of Home Inspectors and is a Florida home inspector and home inspection educator. Mr. Cramer serves on the ASHI Home Inspection Standards. Contact Mark Cramer at: 727-595-4211 mark@BestTampaInspector.com
John Cranor is an ASHI member and a home inspector (The House Whisperer) is located in Glen Allen, VA 23060. He is also a contributor to InspectApedia.com in several technical areas such as plumbing and appliances (dryer vents). Contact Mr. Cranor at 804-747-7747 or by Email: firstname.lastname@example.org
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"Choosing Roofing," Jefferson Kolle, January 1995, No. 92, Fine Homebuilding, Taunton Press, 63 S. Main St., PO Box 5506, Newton CT 06470 - 800-888-8286 - see http://www.taunton.com/FineHomebuilding/ for the magazine's website and for subscription information.
Problems in Roofing Design, B. Harrison McCampbell, Butterworth Heineman, 1991 ISBN 0-7506-9162-X (available used)
Cedar Shake & Shingle Bureau, CSSB, U.S.: Sumas, WA 98295-1178, Tel: 604-820-7700, In Canada:
Cedar Shake and Shingle Bureau #2 - 7101 Horne Street, Mission, BC V2V 7A2 Tel: (604) 820-7700, E-mail: email@example.com , website: http://www.cedarbureau.org/
CCSB offers wood shingle installation instructions in the form of a manual - cedarbureau.org/installation/wall_manual/introduction.htm
The Home Reference Book - the Encyclopedia of Homes, Carson Dunlop & Associates, Toronto, Ontario, 25th Ed., 2012, 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. Field inspection worksheets are included at the back of the volume. Special Offer: For a 10% discount on any number of copies of the Home Reference Book purchased as a single order. Enter INSPECTAHRB in the order payment page "Promo/Redemption" space. InspectAPedia.com editor Daniel Friedman is a contributing author.
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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
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.)