TRI-BUILT 3 in. Aluminum Heavy Duty TPO RetroDrain

This TRI-BUILT Heavy Duty TPO RetroDrain provides a 3 in. retrofit roof drain for TPO membrane roofing systems. It is constructed of aluminum for corrosion resistance and ships as one piece. Use it when replacing or adding drainage over an existing TPO roof.

Key Features:

• 3 in. outlet: RetroDrain is sized with a 3 in. diameter for retrofit drainage connections.
• Aluminum body: Aluminum construction resists corrosion on the roof.
• Heavy duty design: Built as a heavy duty drain for demanding TPO retrofit applications.
• TPO compatible: Designed specifically for use with TPO membrane roofing systems.
• Tested standard: Manufactured to ANSI/SPRI RD-1 for roof drains.
• Retrofit install: Installs over existing roof assemblies without a full tear-off.

Specifications Table:

Fit and Compatibility:

Designed for TPO membrane roofing retrofit drain applications. Pair with 3 in. drain piping and TRI-BUILT TPO flashing accessories; field-verify membrane brand and thickness before ordering.

Frequently Asked Questions (FAQ):

Q: What is included with the RetroDrain?
A: Each selling unit is one 3 in. aluminum Heavy Duty TPO RetroDrain.

Q: What pipe size does it fit?
A: It is sized for a 3 in. diameter drain connection.

Q: What membrane is it for?
A: It is designed for TPO single-ply membrane roofing systems in retrofit applications.

Q: Is it heavy enough for commercial roofs?
A: Yes, it is a heavy duty aluminum drain manufactured to ANSI/SPRI RD-1.

Q: How much does it weigh?
A: The item weight is listed at 32 lb.

Expert Verdict Reviewed by the SuperArbor Pro Desk

Retrofit drains like this let you upgrade roof drainage without tearing off the existing TPO membrane. Verify the existing drain bowl and pipe size before ordering, and install with the membrane manufacturer’s approved flashing method and sealants to maintain the TPO warranty. The ANSI/SPRI RD-1 listing confirms the drain is tested to a recognized roof-drain standard.

Install roof drains only per the manufacturer’s instructions and local plumbing and roofing codes; observe roof-edge fall protection during retrofit work.

Order the TRI-BUILT 3 in. Aluminum Heavy Duty TPO RetroDrain for your next TPO retrofit drain job.