Insulation Expert Witnesses

Prescott, Arizona

Plumbing, Construction - Concrete, Steel, Compaction, Framing, Codes, Roofing, Civil Work, Residential, Commercial/Industrial, Leak Detection, Contracts, Mechanical, Drywall, Insulation, Gypcrete, Engineering, Safety, Scheduling, Communicating, Local Requirements

With almost four decades of experience in the plumbing trade, JP Strategies brings unmatched technical knowledge and real-world insight to every case. Founder John Petkovich began his plumbing career in 1987, inspired by his father’s belief that plumbing was a skill that could open doors anywhere. That foundation turned into a lifelong passion, a thriving trade career, and now, a trusted expert witness practice. Plumbing is more than pipes and fixtures—it’s a trade that touches every phase of a project, from underground systems to final trim work, across residential, commercial, and industrial environments. This breadth of experience allows JP Strategies to step into any dispute and deliver clear, informed, and defensible opinions that hold weight in courtrooms and negotiations. Key Areas of Expertise in Plumbing Disputes Expert Witness Testimony & Litigation Support Expert testimony for depositions, mediations, and trials Detailed case reviews, reporting, and forensic analysis Cl...

West Fork, Arkansas

Refrigeration, OSHA - Industrial process refrigeration, cold storage, ammonia, carbon dioxide, piping, insulation, design, design review, OSHA, EPA, mechanical code analysis

I have 15 years' experience as a refrigeration service/startup contractor, followed by 25 years' experience as a graduate engineer in industrial refrigeration ammonia and CO2 applications up to 5,000 TR. My engineering experience includes design and project management positions with a D/B contractor, a large food processor, an A&E firm (Deputy Director of the Food & Beverage Group) and my current consulting business. I'm registered as a PE in 19 states and have an NCEES Record. Current committee service includes the American Society of Heating, Refrigerating and Air-Conditioning Engineers (TC 10.1 and TC 10.2). I have revised portions of chapter 2 in the 2014 and 2018 editions of the ASHRAE Refrigeration Handbook, calculations of CO2 piping capacities in chapter 3 of the 2018 RHB and organized the ongoing revisions to chapter 1 of the 2026 RHB. I've been a Member of ASME B31.5 since 2019 and chaired the Committee since 2021. My work with the Refrigerating Engineers and Technic...