Marathon 2 in. Copper-Tite Drain w/Anti-Backup Seal

The Marathon Copper-Tite BCTS29 is a 2-inch retrofit roof drain built with a copper body and an expanding anti-backup tape seal to prevent water backflow. It comes standard with a 10-inch ABS clamping ring and 10-inch polyethylene strainer, and is available with either a 14-inch small flange or 18-inch large flange to suit project requirements. The 9-inch outlet length supports secure integration into existing piping for dependable, watertight performance.

Key Features:

• Copper body retrofit drain for long-life performance
• Expanding anti-backup tape seal to prevent water back-up
• 10-inch ABS clamping ring and 10-inch polyethylene strainer (standard)
• Available with 14-inch small flange or 18-inch large flange
• Quick, simple installation suited to reroof/retrofit work

• Roof drain pipe size: 2″
• Model / part number: BCTS29 (Small Flange), BCTS29CR (Large Flange), BCTS29CR(E) (Small Flange with clamping ring designation)
• Body: Copper
• Flange size options: 14″ (SF) or 18″ (LF)
• Outlet length: 9″
• Clamping ring: 10″ ABS
• Strainer: 10″ polyethylene
• Packaging: 1 per carton

• Confirm the 2″ Copper-Tite model (BCTS29) and choose the required flange size (14″ or 18″).
• Clean the existing drain sleeve and roof membrane around the opening.
• Position the Copper-Tite drain so the flange sits flat on the roof surface.
• Remove the restraint from the expanding tape and insert the drain; allow the tape to expand within the sleeve to create a watertight seal.
• Install the 10″ ABS clamping ring and 10″ polyethylene strainer.
• Flash the flange in accordance with the roofing membrane manufacturer’s instructions.

Q: What flange sizes are available for BCTS29?
A: 14-inch small flange and 18-inch large flange options are available.

Q: What are the standard ring and strainer materials?
A: A 10-inch ABS clamping ring and 10-inch polyethylene strainer are standard.

Q: What is the outlet length on Copper-Tite drains?
A: The outlet length is 9 inches.

Q: How does the anti-backup seal work?
A: The factory-applied expanding tape fills the gap between the drain outlet and existing sleeve, preventing water back-up and creating a watertight seal.

Q: What is the packaging for this product?
A: One unit per carton.