These unique roof drains are designed for use in roof renovation projects. They are created to fit seamlessly with the existing plumbing, keeping a water tight bond without having to go through the hassle of changing all of the plumbing to install a new, more effective roof drain. Retrofit roof drains come in a variety of different brands, materials, and shapes including scupper drains. Durable materials like aluminum and stainless steel create long-lasting, efficient drains that will keep water from pooling and causing damage on your roof, deck, or balcony.