Roofing/flat roof


Hi Bruce,

This is a follow up question from yesterday.

I've had an on and off roof leak since the beginning of winter and water is coming in from the same area.

The insulation between the roof deck and interior ceiling is saturated.

Does this insulation need to be replaced? If not, at what point will it need to be replaced?

Thank you


The insulation should be inspected for mold and replaced, as well as the ceiling and vapor barrier below leak area.  Generally the paper facing on the gypsum board on the ceiling will mold under the vapor barrier at the point of water entry into your unit.  The concern for mold is not overly great as when the ceiling is repaired the and the water source eliminated, any mold will return to a dormant state and also will not be exposed to the living space. But it is nice to know any mold growth has been removed.  

If you have not yet, I recommend involving a roof consultant in your area on your project to ensure your are getting the right solution and that what you are paying for is installed.  Go to to find qualified independent consultants in your area.


Bruce Ryan II, RRO
Professional Roof Consultants, Inc.


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Bruce A. Ryan II, RRO


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.


Bruce Ryan has 20 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.

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

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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