Category: News

Congratulations Daniel Behrens, Promoted to Principal Engineer

Haag is very pleased to announce that Daniel Behrens, P.E., has been promoted to Principal Engineer! Based in Minneapolis, Dan Behrens has been a Haag Engineer for 13 years, with 24 years in the engineering field. He has been instrumental in serving Haag’s clients in Minneapolis, the Midwest, and beyond. Dan is a prolific course developer and a reliable ‘go-to’ engineer who is always willing to mentor new engineers and take on challenging assignments. Congratulations on this well-deserved promotion Dan!

Fire Investigator Steven Reed Joins Haag in North Carolina!

Haag Welcomes Steven Reed, IAAI-CFI, NAFI-CFI New Fire Consultant in North Carolina!

“We are very pleased have Steven Reed on Haag’s Fire O&C team,” said Edward Roberts, Director of Fire Investigation Services. “Steven Reed has more than three decades of fire investigation experience and has personally conducted over 3,000 fire investigations.”

About Steven Reed:

  • Holds multiple fire and explosion certifications, including IAAI-CFI
  • 36 years of investigative training and experience
  • Court tested and reliable. Experienced in municipal, civil, & criminal trials
  • One of 330 individuals worldwide to hold all three NAFI Certifications
  • Lead investigator in large/complex losses such as an explosion/fire at a refinery in Singapore
  • lead investigator of a commercial building fire in Oakland, CA that claimed 36 lives.
  • He has led multiple large losses at apartment complexes, commercial properties large scale manufacturing plants.

For more information or to contact Mr. Reed for your next fire assignment, please email or call 800.527.0168.

Welcome Alex DeGroot, P.E., New Engineer in Charlotte!

Haag Welcomes Alex DeGroot, P.E., New Engineer in Charlotte!

“We are pleased to welcome Alex DeGroot to our Haag team,” said Justin Kestner, CEO. “Mr. DeGroot brings practical structural engineering expertise and will help serve Haag’s clients in North and South Carolina and beyond.”

Based out of Charlotte, Alex is a licensed professional engineer with seven year’s experience. He previously worked as a structural engineer designing wood, steel, masonry, CFS, FRP and reinforced concrete structures. He evaluated existing conditions, identified causes of problems, and provided engineered solutions. He then coordinated with clients, steel fabricators/erectors, and general contractors to identify potential issues and implement cost effective solutions, including developing solutions for atypical field issues with multiple constraints and limitations.

Mr. DeGroot earned a Master of Structural Engineering from Southern Illinois University and a Bachelors of Science in Civil Engineering from Bradley University. He is a licensed P.E. in North Carolina. 

Notable projects include–

  • Goddard School, Chicago- coordinated with the architect from design to construction administration for the $5 million three-story private school
  • Illinois State Toll Highway Authority Contract I-18-4427, Chicago- designed performance-based, ground-mounted and structure-mounted precast concrete noise abatement walls for the $58 million contract
  • SoFi Stadium, Los Angeles– analyzed six construction hoists for the $5 billion stadium using atypical tie-off methods and custom connections.

Primary Areas of Consulting

  • Structural Evaluations
  • Commercial, industrial, and residential buildings 
  • Foundation and wall failures
  • Building code compliance
  • Construction hoists
  • Noise abatement walls
  • Building Envelope Evaluations
  • Moisture intrusion
  • General Civil Engineering
  • Drainage and flooding
  • Wind Engineering and Related Storm Effects
  • Structural damage
  • Roofing systems 
  • Quality of manufacture and application of roofing
  • Cause, nature, and extent of damage, particularly from hail and wind; and remaining service life

For more information or to contact Mr. DeGroot, email or call 800.527.0168.

Haag Welcomes John Thomazin, MSME, P.E., DFE, Forensic Engineer!

“We are very pleased to welcome John Thomazin to Haag,” said Justin Kestner, Haag Global CEO. “John brings 25+ years of engineering experience to Haag. He has a great mix of design and forensic experience, including as an expert witness.”

Based in Orlando, Florida, John Thomazin, MSME, P.E., provides mechanical and electrical systems consulting in the fields of manufacturing, safety engineering, structural and mechanical design, reliability, computer-aided engineering, consulting, and project management.

Mr. Thomazin specializes in vehicle accident reconstruction, farm accidents, structural systems, mechanical systems, product liability, failure analysis, and finite element modeling. As an engineering consultant, he has experience designing and evaluating agricultural buildings, commercial buildings, metal buildings and structures, foundations, agricultural and commercial machinery, HVAC, and plumbing systems. He applies principles of engineering and physics to the forensic evaluation of machinery, crash investigation and reconstruction, and consumer products.

Since 2008, Mr. Thomazin has been retained by both plaintiff and defense clients and has provided testimony for civil cases in state and federal jurisdictions. He uses his skills and experience gained as an instructor and project manager to explain and simplify technical ideas while also keeping testimony relatable, memorable, and interesting.

Primary Areas of Consulting

  • Vehicle Accident Reconstruction
  • Products Liability
  • Equipment & Machinery
  • Mechanical & Agricultural Engineering
  • Failure Analysis
  • Safety Engineering
  • Manufacturing
  • Mathematics
  • Building Inspections
  • Construction Defects
  • HVAC
  • Plumbing Passenger & Freight Elevators

For more information or to contact Mr. Thomazin, please see his profile here. 

Haag Canada Announces New Managing Director, Derek Sayers

Haag is pleased to announce the promotion of Derek Sayers, MRICS, MSCL, MIIC, to Managing Director of Haag Canada. Mr. Sayers will leverage his expertise and leadership skills to serve Haag’s clients and expand the market reach of Haag Canada.

“Haag has built a reputation for our relentless pursuit of excellence,” said Justin Kestner, MSCE, MBA, P.E., CEO of Haag Global. “Derek Sayers will lead Haag Canada with our shared commitment to professionalism, quality, and integrity. Derek has a keen attention to detail and organization which will benefit our Canadian clients while growing our reach and reputation from coast-to-coast.”

During his 30+ year career as a construction claims professional, Mr. Sayers has handled large and complex construction claims, both domestically and internationally. He has served as quantum expert, project contracts manager, and corporate claims manager. He has diversified Haag Canada’s client base, building solid and enduring relationships with owners, lawyers, and contractors across the country.  Mr. Sayers will use that experience to enrich and grow Haag Canada and will continue to serve as Practice Lead for Construction Claims.

Haag Canada accurately determines and clearly communicates cause, quantum, and mitigation of loss to help clients make difficult decisions with confidence. Catering to the growing complexity of client needs in Canada the firm provides a national resource of core services, including forensic engineering, loss remediation and mitigation, physical damage quantification and appraisal, and risk and project management. Haag Canada draws on Haag’s team of international experts and 98-year legacy of handling complex losses in the most insured and litigious markets in the world.

For more information on Haag Canada or to contact a representative, please visit

Haag Canada
401 Bay Street, 16th Floor
Toronto, ON M5H 2Y4
800-527-0168 (Toll Free)
416-917-4141 (Main)

About Haag Global

Haag Global, Inc., began as a failure and damage consulting firm in 1924. Today, Haag is an employee-owned, multi-faceted forensic engineering and consulting company. Haag is the United States’ oldest and most respected failure and damage consulting firm, with a 98-year history of engineering and consulting excellence. Our highly skilled engineers and consultants benefit from the best training and peer-review/collaboration in the business. Haag’s service areas include forensic engineeringconstruction consultingcertifications, training and productsGIS, BIM, laser scanning servicesproduct & material testing, and fire origin and cause investigations.

Zachary Wienhoff, E.I.T., New Engineer & Meteorologist in Illinois

Zachary Wienhoff, E.I.T., is an Associate Engineer & Meteorologist with Haag Global. Based in Champaign, Illinois, Mr. Wienhoff provides forensic engineering evaluations related to

  • Roofing Systems 
  • Building Envelope Systems 
  • Evaluation of Wind Damage to Structures
  • Construction Defect Evaluations
  • Meteorological Investigations

He is an Engineering Intern in Illinois and an FAA-Licensed UAS Remote Pilot. His research is widely published in many technical journals and publications.

Mr. Wienhoff previously worked advising atmospheric sciences students on topics related to the EF-scale and non-linear damage patterns in significant tornadoes. He was an a Agricultural Meteorology Intern, where he worked with in-house quantitative precipitation estimation algorithm focused on improving rainfall estimates for farmers and internal company services. His field research and experiments include working as weather instrumentation field coordinator and coordinating/ assisting with post-tornado ground and aerial damage surveys. He worked as a Radar Operator/Field Coordinator studying tornado/supercell dynamics and nocturnal convection.

For more information or to speak with Zach Wienhoff, email or call 800.527.0168.