Heat Guard 1000 Heat Guard 1000 is a single component high heat resistant reflective and waterproof coating which has been designed to dissipate and reflect solar radiation by providing a protective coating. Heat Guard 1000 is applicable on a variety of substrates such as concrete, blocks, bricks, plaster and screeds, and a variety of shaded metal roofs. Heat Guard 1000 had added glass beads aggregates embedded into it which can reflect heat off the surface to a great extent.