Sferra Waterproofing is an authorized Grate Products contractor. For more than 30 years of innovation and commitment to customer satisfaction, Grate Products was created to help homeowners achieve a healthy living environment. Grate Products System GrateDrain Grate Trench GrateSump Sump Pump System GrateDrain Components Pumping System Vapor Barrier Crawl Shield Flexi Flange Dehumidifier Basement Flooring Grate products manufactures a broad range of products that are specifically design for correcting the basement environment. is trained in the latest techniques and methods of installation of the Grate Drain water and moisture control system. Partnership Grate Products work tirelessly to educate homeowners on how to protect what is usually the most important investment of their life… their home. We are a partnership that works together to create a safe and clean basement environment for years to come. We stand behind our products and service. We care about our customers and...