Forensic Engineering
Donan provides forensic engineering services in three main areas of expertise:
  • Civil and Structural Engineering
  • Mechanical Engineering
  • Electrical Engineering

Each professional engineer lends their knowledge, skill, and experience to a wide array of projects related to their discipline, in diverse settings that encompass residential, commercial, and industrial investigations.

Having a dynamic group of experts under one roof provides a cross-disciplinary powerhouse that serves as an invaluable resource from basic roof claims to large loss investigations.

Our professionals are strategically located throughout our nationwide footprint and are ready to respond when and where you need us.

Our experts also handle thousands of roof and flood claims every year.

Representative Capabilities
Civil and Structural Engineering:
  • Bridge Failures
  • Foundation and Basement Wall Failures
  • Commercial Roofing Investigations
  • Earth Movement Issues
  • Retaining Wall Failures
  • Hurricanes and Flood
  • Blasting and Vibration
  • Steel-Frame Construction Failures
  • Truss Failures
  • Earthquake and Blasting Damage
  • Water Infiltration and Mold
  • Wood-Frame Construction
Mechanical Engineering:
  • Vehicles
  • Machinery
  • Heavy Equipment
  • Gas-Fired Appliances
  • Plumbing and Piping Systems
Electrical Engineering:
  • Fire Causation
  • Lightning Damage
  • Low- and High-Voltage Damage
Roofing Investigations
  • Residential
  • Wind/Hail
  • Fixed Price
  • Snow Loads and Ice Dams


The “expert-on-demand” rate applies to professionals specifically requested by the customer for their technical expertise, niche/specialty certification, and/or extensive experience. This includes, but is not limited to, Territory and General Managers, Registered Roof Consultants, Certified Safety Professionals, and Principal Consultants for these and other technical areas: Flood, Residential and Commercial Roofing, and Structural.

Fixed-Price Roofing Investigations

Donan offers Fixed-Price Roofing Investigations for clients trying to determine if a residential asphalt-shingle roof has sustained wind and/or hail damage. In order to qualify, the property must be a single-family dwelling no more than than two stories high with a walkable asphalt-shingle roof.*

$900 Fixed-Price Roofing Investigation Includes
  • The services of a Professional Engineer and/or Registered Roof Consultant with at least five years of experience
  • Thorough inspection of the subject loss, including outbuildings
  • A 2-3 page report
  • Up to one hour (45 miles) of round-trip travel**
  • Up to 12 captioned photos

Reports and photographs are delivered via email and/or uploaded to Donan’s Customer Portal, in alignment with the customer’s preference.

* Exclusions: Condominiums, apartment buildings, and commercial properties; any and all non-asphalt roof materials; high or steep roofs. Note that contractor or attorney involvement, at Donan’s discretion, may disqualify an investigation from fixed pricing.

** Additional travel is billed at standard time and mileage rates.

The Latest in Forensic Engineering
From fixed-price hail inspections to complex commercial investigations, our experts are available to assist with your next investigation.