Oatey Company 11890 Thermoplastic Roof Flashing 3 Inches

Product Description

The OATEY COMPANY 11890 is a thermoplastic no-calk roof flashing designed to seal around vent stacks where they penetrate a roof deck. Built as a single-piece construction, it creates a double-seal, leak-free fit without requiring caulk or secondary sealants. The flexible thermoplastic body conforms to the pipe and roof surface during installation, reducing labor time and the chance of improper sealing. It is sized for 3-inch pipe and fits all standard pipe types. Licensed plumbers and roofers install this flashing as part of drain-waste-vent rough-in or during re-roofing service calls.

The 11890 is suited for residential and light commercial plumbing applications wherever a 3-inch vent stack exits through a pitched or flat roof. It accommodates cast iron, copper, plastic, and galvanized pipe, making it a single-SKU solution for mixed-material installs. The no-calk design is particularly useful on re-roof jobs where speed and code compliance both matter. It meets UPC, SBC, and BOCA code requirements, covering a broad range of jurisdictions across the United States.

Key Features

• Single-piece thermoplastic construction eliminates separate base and collar components
• Double-seal design provides a leak-free fit without caulk or additional sealants
• Fits all pipe types: cast iron, copper, plastic, and galvanized
• Sized for 3-inch vent stacks
• Meets UPC, SBC, and BOCA code requirements

Compatibility

Designed for use with 3-inch cast iron, copper, plastic, and galvanized vent stack pipe in residential and light commercial plumbing drain-waste-vent systems.

Installation Notes

Installation is performed by a licensed plumber or qualified roofer. Power tools are not required; the flashing slips over the vent stack and seats against the roof deck. Ensure the roof surface is clean and dry before positioning the flashing to achieve a proper seal. Follow local plumbing and building codes, including UPC and applicable regional codes, for correct flashing placement and inspection requirements.

Technical Specifications

• Pipe Size: 3 inches
• Material: Thermoplastic
• Construction: 1-piece
• Weight: 4 pounds
• Unit of Measure: EA
• Package Quantity: 6
• Certifications: UPC, SBC, BOCA

Standard Information

• Brand: OATEY COMPANY
• Manufacturer Part Number: 11890