Building Envelope Waterproofing Consultant/Inspector/Expert Witness

Through 42 years of construction industry experience, John Premo has gained knowledge of low-slope and steep-slope roofing, waterproofing, sheet metal, stucco & EIFS, fenestration (windows & doors) and other construction-related materials and processes literally "from the ground up”.  He possesses a working knowledge of nearly all phases of the construction industry.

During his tenure as a roofing and waterproofing consultant, John has conducted investigative roofing, waterproofing and building envelope analyses for litigation support, specification development and cost analysis. In addition, John has designed roofing and waterproofing systems and provided project management services such as Pre-Bid and Pre-Job Conferences, Quality Assurance Observations and Final Inspections.

As a construction defect Expert Witness, John has been involved in numerous litigation investigations related to building envelope waterproofing issues and has provided Expert Witness testimony in mediations, depositions and at trial.

John’s Building Envelope Quality Assurance Inspection credentials include many high profile projects such as The Getty Center in Los Angeles, University of California (Los Angeles & Santa Barbara), Cal State University, Cottage Hospital (Santa Barbara & Goleta, CA), Community Memorial Hospital (Ventura, CA), Henry Mayo Newhall Hospital (Newhall, CA) - please see our “Spec & Inspections” page.

“Hands-on” experience includes working as a roofer and roofing estimator for both large-scale and small-scale  commercial and residential projects.  

John has been an attending member of the International Conference of Building Officials (ICBO) and the Committee for Fire Safe Roofing (CFSR).  He also has experience as the Southern California Technical Representative for a major roof tile manufacturer.

John is a licensed California roofing contractor (C-39) - license #780727 (Inactive).

Office:  805-933-3369

Mobile:  805-797-0558

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