Oatey Company 11877 Roof Flashing 3 to 4 Inches Type B

Product Description

The OATEY COMPANY 11877 is a galvanized aluminum thermoplastic no-caulk roof flashing designed for vent pipe penetrations through pitched roofs. It slides over the pipe without requiring caulk or sealant at the base, creating a watertight seal around the pipe collar. Rated for continuous heat exposure up to 180 degrees F, it is suitable for Type B vent installations. This flashing is intended for residential and light commercial roofing applications where a clean, code-compliant pipe penetration is required. HVAC technicians, plumbers, and roofers install this component as part of B-vent or similar venting system rough-ins.

This flashing fits pipe diameters from 3 to 4 inches and is designed for use on standard pitched roof assemblies. It is approved for Type B vent installations and is appropriate for gas appliance venting applications where a non-caulk, slide-over flashing is specified. It is not approved for hot-mopped or built-up roof assemblies. Do not use petroleum-based products on the plastic base or rubber collar components of this flashing.

Key Features

• No-caulk design — slides over pipe for straightforward installation
• Galvanized aluminum and thermoplastic construction for durability
• Rated for continuous heat up to 180 degrees F
• Approved for Type B vent installations
• Not for use on hot-mopped or built-up roof assemblies
• Avoid petroleum-based products on plastic base or rubber collar

Compatibility

Designed for Type B vent pipe installations with pipe diameters from 3 to 4 inches on standard pitched roof assemblies. Not compatible with hot-mopped or built-up roof systems.

Installation Notes

Installation is typically performed by a licensed HVAC technician or plumber as part of a B-vent or gas appliance venting system. Ensure the vent pipe is properly supported and aligned before sliding the flashing into position. Do not apply petroleum-based products to the plastic base or rubber collar at any time. Follow local building codes and manufacturer venting system guidelines for final inspection approval.