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Roofing/rubber roof patch and coating

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Expert: Bruce A. Ryan II, RRO - 7/6/2009


Question
I have a 20 year old rubber roof-flat.  It needs patching and coating.  It has been patched before with (I think) some asphalt patch and, about 5 years ago, coated with fibered aluminmum coating--apparently a mistake.  What kind of patching & coating can I use?

Answer
Richard,

You do not ever want to use asphalt products on EPDM (rubber).  If all of the old coating is worn off, you may use an elastomeric coating formulated for EPDM or a Hypalon based coating.  The Hypalon is the best for long term adhesion and performance.

Patching of the rubber should be performed with pressure sensitive tapes and primer.  Make sure the roof is clean clean clean prior to any patching or coating work.  If you have a 45mil thick rubber membrane, it may be prudent to replace the entire membrane as it has a limited life remaining (typical).  If you have a 60mil thick membrane, and if you get a good job, the repair should last as long as the membrane has left in it; about another 10 years.

Regards,

Bruce Ryan II, RRO
Professional Roof Consultants, Inc.

Roofing

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Bruce A. Ryan II, RRO

Expertise

I offer solid knowlege of all types of Commercial and Residential Roofing, Waterproofing, and, Building Envelope systems. Experience ranges across low slope and steep slope roof systems. I am also well versed in matters regarding condensation and ventilation. I enjoy donating some of my time and knowledge to the betterment of others.

Experience

Bruce Ryan has 13 years of roofing, waterproofing, and building envelope consulting experience with PRC, with 5 years of commercial roofing experience prior to joining the firm. He became Vice President of the company in 1998. Bruce Ryan plays a key role in the development of practical, long-term roofing and waterproofing solutions, along with implementation of on-site forensic studies. Bruce also has a high level of experience with regard to the impacts of roofing materials and construction for demanding clients with heavily occupied structures.

Organizations
Oregon Construction Contractors Board Construction Specifiers Institute National Roofing Contractors Association The Institute of Roofing, Waterproofing, & Building Envelope Professionals Oregon Board of Investigators Installation Masters

Education/Credentials
University of Maryland BS Business & Administration Registered Roof Observer - RCI Private Investigator Certified EIFS inspector - Northwest Wall and Ceiling Bureau Certified InstallationMaster™ - The Installation Masters™ Training and Certification Program (developed by American Architectural Manufacturers Association)

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