Designed to help prevent blockage of existing drain strainers by enlarging strainer capacity for increased protection from debris or roofing ballast. The patented design is available in 3' x 3' or 4' x 4' configurations and is constructed of .100" thick aluminum with stainless steel hardware for proven durability and performance.
OlyFlow RetroDrains are designed to replace existing drains in reroofing applications. Installed from the roof surface, the OlyFlow RetroDrains are engineered to be installed without removing the existing plumbing or fixture while providing a watertight connection to the roof system and the existing plumbing.
As with all building materials it is the responsibility of the installer to review its usage with a design professional to confirm safety, compatibility and acceptance with the roof cover manufacturer as well as local building codes.