A tough reinforcing fabric especially designed for renewal of gravel roofs. When this remarkably strong 100% polyester fabric is embedded between two coats of Heavy Duty or FlexShield Roof Coating, an economical new waterproofing membrane with outstanding performance characteristics is the result. Superior strength, stretchability and durability produce a roof which will outlast conventional approaches. It "conforms" to rough gravel surfaces, helping to eliminate future blistering problems and also reducing the likelihood of punctures.