American WeatherStar (AWS) announced it is the exclusive roofing material supplier for its new liquid applied urethane and silicone AWS Ure-A-Sil roofing system.mer This proprietary system contains a combination of an AWS Urethane 520 base layer that is then top coated with AWS Silicone 410 is unmatched for durability and waterproof reliability, especially when used for low-slope or flat roof applications. This system’s unique blend of single-component products is durable enough to handle ponding water while offering excellent adhesion and superior UV stability. For more information, visit www.americanweatherstar.com.