I have 30 years of experience, and specialize in the field of roof and building envelope consulting with specific knowledge in the areas of low-sloped roofs, steep pitched roofs, forensic roof failure analysis and masonry wall systems. I have published on such topics as attic ventilation and ice dam protection, lightning strike anomaly and masonry parapets in frequent freeze and thaw climates. I have testified on installation workmanship and tile roof inspection.I have been performing forensic roof failure investigations since circa 1996. Some years there are many, some years there are few. I have been called numerous times for depositions. All except for the two above cases, they have been settled out of court.