Commercial Bottom Outlet Roof Drain with Overflow

The Thunderbird Products Commercial Bottom Outlet Roof Drain with Overflow is a professional-grade combination roof drain and overflow system engineered specifically as a roof drain for commercial buildings. This heavy-duty commercial roof drain features an innovative dual outlet drain design that provides both primary drainage and integrated overflow protection, making it the ideal solution for warehouses, industrial facilities, office complexes, and other large-scale commercial roof applications.

Features

• Dual Outlet Drain Configuration: This combination roof drain and overflow features two independent drainage outlets—a primary bottom outlet for standard water removal and a secondary raised overflow outlet. The dual outlet drain design ensures continuous protection even when primary drainage becomes compromised during heavy storm events.
• Innovative Dual-Bowl System: The dual-bowl design sets this commercial roof drain apart from standard single-bowl drains by providing significantly increased water-holding capacity. This advanced configuration reduces overflow risk and ensures efficient drainage during peak rainfall periods on commercial roof installations.
• Heavy-Duty 20-Ounce Copper Construction: Built with thick 20-ounce seamless copper construction, this commercial roof drain delivers exceptional strength, corrosion resistance, and longevity. Sandblasted copper flashing ensures superior membrane adhesion for reliable waterproofing performance on commercial roofing systems.
• Sump-Less Design for Easy Installation: The streamlined sump-less configuration simplifies commercial roof drain installation by eliminating complex sump requirements. This design reduces installation time, minimizes potential leak points, and provides contractors with a more efficient roof outlet solution.
• Professional-Grade Components: Includes heavy-duty ABS Cyclolac dome strainer to prevent debris from entering the drainage system. The 10-inch diameter basin provides ample water collection capacity, while bronze fittings (no-hub or threaded) ensure durable connections to drainage pipes.
• Multiple Size Options: Available in 2", 3", 4", and 6" drain sizes to accommodate various commercial roof drain requirements and drainage system specifications across different building types and roof areas.
• Code-Compliant Overflow Protection: Meets commercial building code requirements for secondary drainage on flat roofs. The integrated overflow outlet ensures compliance with safety standards while protecting your building investment from water damage.
• Made in the USA: Manufactured by Thunderbird Products in the United States with rigorous quality control standards, ensuring reliable performance for commercial roof drains in demanding applications.

Applications

• Commercial Buildings: Specifically designed as a roof drain for commercial buildings including warehouses, shopping centers, office buildings, manufacturing facilities, and distribution centers where reliable dual-drainage protection is essential for asset protection and business continuity.
• New Construction Projects: Ideal for new commercial roof drain installation on flat or low-slope roofing systems. The dual outlet drain configuration provides comprehensive protection from day one, reducing long-term maintenance costs and water damage risks.
• Retrofit and Replacement Applications: An excellent upgrade for existing commercial roof drains that lack adequate overflow protection. The combination roof drain and overflow design brings older drainage systems up to current building code standards with minimal modification to existing roof penetrations.
• High-Volume Water Management: The dual-bowl design makes this commercial roof drain the optimal choice for regions experiencing intense rainfall or buildings with large roof areas requiring superior water management capacity beyond what standard roof outlets can provide.
• Code Compliance Solutions: Many jurisdictions now require secondary drainage or overflow protection on commercial flat roofs. This roof outlet meets these requirements while providing the reliability and durability expected in commercial roof drains for professional installations.

The Thunderbird Products Commercial Bottom Outlet Roof Drain with Overflow represents the next generation in commercial roof drain technology. With its dual outlet drain design, heavy-duty construction, and simplified installation process, this combination roof drain and overflow system delivers comprehensive protection for commercial buildings while meeting strict building codes and performance standards.

Note on Fittings: Two types of fittings are available. 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. 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.