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Question
Hello

Our single story house just got a new roof - Certainteed shingles part of the house -  and IB roofing system  (garage and kitchen).  Throughout the process there has been a heavy glue smell in the house.  Is it normal?  We aired it out, thought it was gone, turned on our central air system and the glue smell is back REALLY STRONG. What happened?  What do we do?  Is it toxic?  

Also, IB system on flat roof (looks like PVC) has some bubbles.  Can this affect the longevity of this roof system?   

Thanks,  Gabriel

Answer
Gabe,

The smell will dissipate over time.  If the PVC roof membrane was adhered with glue, it could either be solvent based or water based.  They both smell bad I suppose however the solvent based glue is going to have worse effects due to exposure.  You should not be exposed to enough of the solvents to have issues with long term exposure, so any ill effects will be temporary.  As you are doing, keep airing the house out for the next day or two. The glue smell is expected and is sometimes better or worse depending on the construction of the building.  Often times the PVC membrane itself can exude quite an odor when it is new, this will also dissipate over time but I would expect that to last a week or two tops.

A for the bubbles, this happens from time to time where the sheet was not laid into the glue uniformly and wrinkled a bit.  If the wrinkles (bubbles?) are small and in isolated areas then they can be left, if they are large then they should be sliced, adhered, and patched.  If the wrinkles are extensive then you may have an installation problem which could result in some type of premature failure.

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 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.

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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