Lightning Strikes and Roof Protection
Data from the National Fire Prevention Association (NFPA) during 2007-2011 shows that U.S. fire departments responded to an average of 22,600 fires per year started by lightning. Of these, 19% occurred in homes, and another 7% involved businesses and non-residential buildings. When lightning strikes, it doesn’t matter if the materials it hits can conduct electricity or not. If the roof is covered with combustible materials such as wood shakes or extremely flammable asphalt shingles, they are easily ignited as it channels through to the ground via the house’s pipes and electrical system. Fire is the most severe risk of a lightning strike to your home. Lightning can spread in the attic and within the walls after jumping from the roof, seeking the most conductive path to the ground. In addition to structural damage, your home can experience a surge of electrical current through water pipes, phone lines, and electrical outlets that impact devices such as a television, electrical appliances, landline or corded phones, cordless phone chargers, computers, and other expensive electronics.