Donald Brodsky is the founder of The Building Scientist and has spent nearly four decades helping owners, operators, attorneys, insurers, and developers understand why buildings fail and how to prevent costly recurring problems. His work bridges building science, HVAC performance, indoor environmental quality, moisture management, and building envelope systems.
What distinguishes Donald's approach is his commitment to independence. The Building Scientist does not sell equipment, perform remediation, or profit from corrective work. Every engagement is built around objective diagnosis, defensible recommendations, and verified outcomes.
Over the course of his career, Donald has managed thousands of complex investigations involving moisture intrusion, HVAC deficiencies, indoor air quality concerns, environmental contamination, and large-scale building failures. Today he advises multifamily owners, property managers, developers, legal teams, and institutional stakeholders seeking clarity before committing significant capital.
Donald holds an elite suite of industry designations validating his multi-disciplinary approach:
• Florida State Air Conditioning Licensed Contractor
• Florida State Licensed Mold Remediator
• REWC - Registered Exterior Wall Consultant
• CMCI (Council-certified Moisture Control Investigator) – ACAC
• CIE (Council-certified Indoor Environmentalist) – ACAC
• CMR (Council-certified Microbial Remediator) – ACAC
• CMA (Council-certified Microbial Advisor) – ACAC
• NADCA CVI (Certified Ventilation Inspector)
• NADCA ASCS (Air Systems Cleaning Specialist)
• BPA (Building Professionals Assessment) – BPI
• ACCA HVAC Design Series• IICRC – Master Status (All Classes)
• ICRA (Infection Construction Risk Assessment)
• HAZWOPER 40


Dave Borowski
Title
David Herring brings more than three decades of experience in building science, construction consulting, property loss evaluation, and dispute resolution. His career has focused on helping owners, attorneys, insurers, and stakeholders understand how buildings fail, what repairs are truly necessary, and how those repairs should be quantified.
Known throughout the industry for his objective approach and technical rigor, David has overseen hundreds of millions of dollars in repair programs and participated in thousands of litigation, appraisal, and dispute-resolution matters. His expertise spans building envelope failures, moisture intrusion, construction defects, weather-related damage, and code compliance.
What makes David particularly valuable is his ability to combine technical building science knowledge with practical construction and cost analysis. Whether supporting an ownership group, legal team, or insurance matter, his work is rooted in evidence, documentation, and defensible conclusions.
Areas of Expertise
- Building Envelope Performance
- Construction Defects
- Moisture Intrusion Analysis
- Cost-to-Repair Evaluation
- Property Loss Consulting
- Appraisal & Umpire Services
- Expert Witness Support
- Building Failure Analysis

David Herring
Building Science Expert | Loss Consultant | Expert Witness
David Herring brings more than three decades of experience at the intersection of building science, construction, property loss consulting, and dispute resolution. Widely recognized for his ability to diagnose complex building failures and quantify repair requirements, David has become a trusted advisor to attorneys, insurers, developers, ownership groups, and institutional stakeholders throughout North America.
Licensed and active across 41 states, David has personally overseen more than $600 million in construction-related repairs, managed over 1,000 litigation and pre-litigation matters, and participated in hundreds of large-scale appraisal and umpire proceedings. His work spans building envelope failures, moisture intrusion, construction defects, weather-related damage, code compliance, and complex property loss investigations.
David is particularly respected for his objective, evidence-based approach. Having worked extensively with both policyholders and carriers throughout his career, he brings a uniquely balanced perspective to high-stakes disputes. His opinions are rooted in building science, construction methodology, building code, and documented physical evidence rather than advocacy.
In addition to his consulting practice, David is the founder and principal of several industry-leading organizations, including Rise Document Inc., WriteLoss ClaimWrite Inc., and Unbiased Umpire LLC. Through these ventures he has helped shape industry standards for property damage evaluation, cost-to-repair analysis, appraisal, and dispute resolution.
His experience includes major commercial losses, large-scale construction defect investigations, expert witness testimony, and multimillion-dollar property damage claims throughout the United States. Whether retained as a consultant, expert witness, appraiser, or neutral umpire, David is known for delivering clear conclusions, defensible analysis, and practical solutions to some of the industry's most complex building failures.
Areas of Expertise
- Building Failure Analysis
- Construction Defects
- Building Envelope Performance
- Moisture Intrusion Investigation
- Cost-to-Repair Quantification
- Property Loss Consulting
- Appraisal & Umpire Services
- Expert Witness Testimony

Mike Cianfrocco
Building Science & HVAC Performance Specialist
Mike Cianfrocco brings more than twenty years of HVAC and building performance experience to The Building Scientist team. His work focuses on understanding how mechanical systems, airflow, pressure relationships, and building envelopes interact to influence comfort, energy use, durability, and indoor environmental quality.
Beginning his career in residential and commercial HVAC installation and system optimization, Mike developed a reputation for approaching building performance problems through detailed diagnostics rather than assumptions. In 2018 he founded Detective Air, a consulting practice dedicated to uncovering the root causes behind persistent comfort, humidity, and airflow challenges.
Mike's expertise spans blower door testing, duct leakage diagnostics, airflow analysis, load calculations, and building performance assessments. His combination of hands-on field experience and advanced diagnostic methodology helps owners move beyond symptom-based repairs toward lasting solutions.
Areas of Expertise
- HVAC Diagnostics
- Airflow & Ventilation Analysis
- Building Performance Testing
- Blower Door Testing
- Duct Leakage Evaluation
- Load Calculations
- Indoor Comfort Optimization
- Home & Building Performance

Mark Levy, CIEC
Principal Building Scientist
Mark Levy has spent more than twenty-five years conducting independent indoor environmental quality and building science investigations throughout the United States. His multidisciplinary background combines environmental science, moisture investigation, indoor air quality assessment, and building performance evaluation.
As a second-generation Indoor Environmental Professional, Mark's foundation in building science began early through environmental screening and radon assessment work before expanding into complex IAQ investigations and forensic building evaluations. Over the course of his career, he has participated in thousands of investigations involving moisture damage, indoor environmental concerns, building failures, and occupant health complaints.
Mark is widely respected for his ability to evaluate complex building conditions through a data-driven, multidisciplinary lens. His work spans multifamily housing, commercial facilities, schools, healthcare environments, assisted living facilities, and litigation support matters.
Areas of Expertise
- Indoor Air Quality (IAQ)
- Building Science Investigations
- Moisture Intrusion Assessment
- Environmental Testing
- Mold & Water Damage Analysis
- Indoor Environmental Quality (IEQ)
- Building Performance Evaluation
- Expert Witness Support

Team Member Name
Envelope & Commissioning Specialist
Supports building envelope review, commissioning, verification, and performance documentation for existing buildings, new construction, and capital improvement projects.
Tell us what you are seeing, what has been proposed, or what decision you are evaluating. We will help determine the right next step.
