TPO Clad Stainless Steel Bottom Outlet Roof Drain

This TPO-clad bottom outlet roof drain (stainless steel) from Thunderbird Products is engineered specifically for TPO flat roof systems — delivering a secure, watertight connection and industrial-grade durability.

Featuring a stainless steel core and heat-weldable TPO cladding, this TPO drain insert is the perfect solution for contractors and builders seeking reliability, easy installation, and long-term performance.

Features

• Heat-Weldable TPO Cladding: Designed for direct hot-air welding to TPO membranes, ensuring a uniform, watertight connection that won’t lift, crack, or separate over time.
• Stainless Steel Core Construction: Built with corrosion-resistant stainless steel, this metal roof drain provides exceptional strength and longevity — even in extreme weather conditions.
• Bottom Outlet Design: Ideal for flat roof systems, the bottom outlet configuration supports efficient, vertical water drainage.
• Heavy-Duty ABS Dome Strainer: Comes with a high-strength strainer to keep debris out while maintaining water flow.
• Multiple Sizes Available: Offered in standard 2", 3", and 4" outlet sizes to accommodate your specific drainage needs.
• Made in the USA: Precision-crafted in America with quality materials and pride in every piece.

Applications

• TPO Roofing Projects: This TPO drain insert is purpose-built for TPO flat roof membranes, providing seamless compatibility and a clean, uniform finish across the roof surface.
• Retrofits & New Installs: Whether you're replacing an old unit or installing a new one, this TPO roof drain delivers reliable performance with simple, fuss-free installation.

Built tough for tough jobs — the Thunderbird TPO Roof Drain combines premium materials with purposeful design. Trust it on your next project when performance and peace of mind matter.

Ready to upgrade your drainage game? Order today and make the switch to a smarter, sturdier TPO drain insert.

This item is also available with optional overflow; as well as in Copper, Stainless Steel, and PVC Clad.

Note on Fittings: Two types of fittings are available:

1. A threaded adapter fitting is used primarily with 2" PVC pipe applications. The threads on the bronze fittings are male and can be attached to a threaded female PVC adapter.
2. A no hub fitting is the standard fitting used in the industry. With this fitting a rubber coupling is used to connect the drain to the drainage pipe.