This can be achieved by creating sufficient ventilation. This membrane is a reinforced rubberized membrane with adhesive on one side to bond directly to the roof decking and seal itself around each nail shank to prevent the nail holes from enlarging during expansion and contraction. Ice dams are not prevented by an ice and water guard but it will prevent water from entering the building. Damage caused by ice dams will continue during the winter months. Some damage may be visible while other problems are hidden.
Prevention is the best strategy.
Damage can be prevented in older construction by maintaining the entire roof surface close to the ambient outdoor temperature and in new construction by building a roof that won t leak if an ice dam occurs. By Jan Barham Thirty-one shopping days before Christmas, only 3 days before the traditionally biggest Christmas shopping day of the year, a merchants nightmare began early Tuesday morning, November 23. Smoke poured from the cosmetic case located near the mall entrance on Winston-Salem s Belk Hanes Mall second floor. The fire, though contained to a relatively small area resulted in a much larger area damaged by smoke and gallons of water from the automatic sprinkling system. The swift action of Belk employees on the job that morning averted a worse disaster when they discovered the fire in its early stages, successfully extinguished it and turned off the water supply to damaged overhead sprinklers.