The Oatey 11899 Thermoplastic No-Calk Roof Flashing is a one-piece roof penetration solution designed for both commercial and residential applications requiring a watertight seal around plumbing vent pipes. This flashing slides over standard vent pipes to create a tight, leak-free seal that protects your roof from water intrusion at a critical penetration point.
Built from rigid black thermoplastic with a non-fading sealing collar, this flashing resists cracking and fading to maintain its integrity for years. The adjustable pitch design accommodates many different roof configurations. Its one-piece solid construction eliminates the need for caulking while providing reliable waterproofing around vent pipe penetrations.
Features and Benefits
- One-Piece Solid Construction: Provides a tight seal that resists water intrusion and eliminates the need for caulking around the vent pipe.
- Adjustable Pitch Design: Fits a variety of roof configurations and angles for flexible installation options.
- Durable Thermoplastic Material: Non-cracking, non-fading rigid black plastic base maintains functionality over time.
- Non-Fading Sealing Collar: Provides a reliable watertight seal without degradation.
- Heat Rated: Rated for 180°F continuous heat and approved for Type B installations.
- Universal Compatibility: Works with cast iron, copper, plastic, and galvanized vent pipes.
Specifications
- Brand: Oatey
- Model: 11899
- Opening Size: 2 inches
- Color: Black
- Construction: One-piece thermoplastic
- Overall Dimensions: 13 inches length, 9.25 inches width
- Weight: 0.4 pounds
- Heat Rating: 180°F continuous
Important Notes
- Not for Hot-Mopped or Built-Up Roofs: Do not use this flashing on hot-mopped or built-up roof systems.
- Avoid Paint and Solvents: Do not apply paint or petroleum-based products to plastic bases or rubber collars.








