Roof Investigations

The functionality of a building can be compromised if the roofing membrane is subject to weather related damage.


There are two types of general roofing applications: sloped roofs and flat roofs. Typically residential structures have sloped roofs and commercial structures have flat roofs; however, the types of roofing materials used on either commercial or residential is interchangeable depending on the roof design.

An integral role is played by the roof in the overall function of the structure. The functionality of a building can be compromised if the roofing membrane is subject to weather related damage, mechanical damage, improper installation, manufacturer’s defects, lack of proper maintenance, or general age and weathering. A roof protects not only the interior, but also parts of the building envelope from moisture build up and infiltration.

View Samples of our Work

Since 1982, Knott Laboratory has been providing comprehensive forensic engineering and computer animation services to reconstruct accidents.

High Profile Cases

Knott Laboratory has become the leader in forensic engineering and computer animation by investigating high profile cases and conveying our analysis effectively during litigation.

Experts in the Field

Our forensic engineers are experts in accident reconstruction, failure analysis and cause & origin. Our forensic engineers work directly with our in-house animation department to create state-of-the-art forensic animations for use in court, arbitration, mediation or settlement negotiations.

Stanley C. Stoll, M.Eng., P.E., CFEI, CVFI

Director of Structural Engineering

(970) 640-5928
sstoll@knottlab.com

Cade R. Caldwell, P.E.

Senior Engineer

(303) 925-1900
ccaldwell@knottlab.com

Kyle T. Wieghaus, Ph.D., P.E.

Senior Engineer, Northern Colorado Office

(970) 631-5290
kwieghaus@knottlab.com

Amy I. Patrick, M.S., P.E.

Forensic Engineer

(832) 493-4817
apatrick@knottlab.com

Tim R. Phelan, M.S., P.E., S.E, M.L.S.E.

Senior Engineer

(303) 925-1900
tphelan@knottlab.com

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