Grace Ice & Water Shield and GAF StormGuard are effective ice and water shields for roofs. Maryland-based Grace Technologies invented the Water Shield, a self-adhered roofing product, in the 1980s.
The Ice & Water Shield is a signature product from Grace that enables a watertight bond with a roof deck, preventing damage and leaking from rain and frost. The product keeps the roof completely dry and safe from wet and icy weather conditions.
GAF manufactures a patented weather-protection shield called StormGuard that helps protect homes from strong rain and damaging ice dams by using a special leak barrier. The leak barrier seals off the most vulnerable areas of most types of roofs.