Forensics & Analysis
Consulting and Inspections
Grayco offers expert roofing advice including inspections, code and industry standard compliance inspections, surveys, analysis and testing.
Whether there is an existing roof or a roof in planning, the design and application of roof systems in accordance to national and local building codes is paramount for proper roof performance and public safety. Remember building codes are "minimum" standards for which buildings are to be designed and constructed. Building codes generally follow with industry design and application standards, but acceptable industry standards can be far more stringent than applicable building codes. With Grayco's extensive library and resources we are able to apply proper building codes in locations across the nation as well as research older codes for applications on existing older buildings.
Forensic Investigation
For forensic investigations, expert witness and testimony, large and small companies alike refer to Steven Gray for his extensive knowledge, backed by credentials and experience.
Forensic investigations categories include hail damage, wind damage, leak investigations with destructive and nondestructive methods, and cause and origin analysis. For case studies and detailed information, please see the reports listed below.
- // Guidelines For Inspecting Hail Damage

- // Hail Assessment Research (article by William C. Cullen)

- // Typical Hail Impact Damages

- // Hail Damage 1: Composition Shingle Roofing

- // Hail Damage 2: Asphalt Built-up Roof Systems

- // Hail Damage 3: Modified Bitumen Roof Systems

- // Hail Damage 4: Single Ply Membrane Roof Systems

- // Hail Damage 5: Metal Roofs and Accessories

- // Hail Damage 6: Natural Slate Roof Systems

- // Wind Damage Analysis 1

- // Wind Damage Analysis 2

Documenting the Damage
Baseball sized hail is only one type of weather risk that can cause damage to your roofing. View examples of hail damage and of other weather damage by clicking on any of the pdf links underneath the 'Forensics Investigation' section below.
Hurricane Katrina, one of the worst natural disasters in US history, makes landfall in these weather radar images. The storm is estimated to have caused $86 billion in damage.
View more images of hurricane radar by clicking on any of the links below.
Hurricane Katrina Landfall 1
Hurricane Katrina Landfall 2
Hurricane Katrina Cone
Hurricane Wilma Radar (15mb)
Hurricane Wilma Satellite
Hurricane Jeanne : 12:00pm
Hurricane Jeanne : 3:30pm
Hurricane Jeanne : 8:00pm
Hurricane Dennis Landfall 1
Hurricane Dennis Landfall 2
Hurricane Francis Landfall 1
Hurricane Francis Landfall 2








