Oatey 11891 4 Inch Plastic No-calk Roof Flashing

Product Description

The OATEY 11891 is a thermoplastic no-calk roof flashing designed to create a watertight seal around plumbing vent pipe penetrations through roofing assemblies. The self-sealing collar slides directly over the pipe and requires no caulking, reducing installation time and eliminating a common failure point in traditional flashing details. Weighing 0.71 pounds, the unit is lightweight and easy to handle on the roof. Licensed plumbers and roofers install this flashing during new construction or re-roofing projects where a clean, code-compliant penetration seal is required.

This flashing is suited for both residential and commercial applications where plumbing vent pipes exit through a sloped or flat roof deck. The standard base design accommodates common roofing materials and integrates with the surrounding field during installation. It is a direct replacement choice for deteriorated or failed flashing around existing vent stacks, making it a practical service-call item for plumbing contractors.

Key Features

• No-calk design eliminates the need for sealant application at the collar
• Self-sealing collar slides over the vent pipe for a secure, watertight fit
• Thermoplastic construction resists weathering and UV degradation
• Standard base profile integrates with common roofing systems
• Suitable for both residential and commercial roof penetration applications
• Lightweight at 0.71 pounds for easy single-person handling on the roof

Compatibility

Designed as an OEM-style replacement for plumbing vent pipe roof penetrations in residential and commercial construction where a no-calk thermoplastic flashing with a standard base is specified.

Installation Notes

Installation is typically performed by a licensed plumber or roofing contractor in accordance with local plumbing code and the International Plumbing Code (IPC). Before servicing an existing penetration, confirm the vent stack is clear and the surrounding roofing field is structurally sound. Slide the collar over the pipe from above and seat the base flat against the roof deck before integrating with surrounding roofing material. No caulk or additional sealant is required at the collar interface.