tape measure measuring some shingles

Wind Effects on Hail Velocity and Impact Energy

DonanEngineering Articles, Commercial & Residential Roofing, DamageRecon, Forensic Engineer, Forensic Engineering, Hail and Wind, Registered Roofing Consultant

The relationship between wind, hailstone velocity, and impact energy is based on an understanding of fundamental physics. Over a half century of laboratory research and field studies have determined that the severity of hail damage to a roofing material is contingent on the kinetic energy at the point of impact and the roofing material’s resistance to that impact energy. These …

Condensation: A Property Damage Culprit in Winter

DonanEngineering Articles, Commercial & Residential Roofing, Forensic Engineer, Forensic Engineering, Structural Damage & Collapse, Water Losses, Winter Storm

Most people know in a general sense what condensation and dew point are, or at the very least, have heard the terms while watching their local weather forecast.  But how many know why they are important? Unfortunately, a lack of understanding of these terms and the science behind them can cost homeowners thousands of dollars in damages resulting from condensation. First, A …