Metal-fab MF-4DF Direct Vent Roof Flashing 1/12-5/12

Product Description

The METAL-FAB MF-4DF is a direct vent roof flashing designed to seal the penetration point where a direct vent pipe passes through a sloped roof. It provides a weathertight barrier between the vent pipe and the roof deck, preventing water intrusion at the termination point. Compatible with roof pitches ranging from 1/12 to 5/12, it fits low-slope to moderate-slope residential and light commercial roofing applications. HVAC technicians and installers use this flashing during direct vent appliance installations or when replacing an existing flashing that has deteriorated.

This flashing is suited for residential and light commercial installations where a direct vent system terminates through a roof with a pitch between 1/12 and 5/12. Typical applications include direct vent furnaces, boilers, and water heaters that route concentric or co-axial vent pipes through a sloped roof assembly. It is installed at the roof deck level and integrated with standard roofing materials to maintain a watertight seal around the vent penetration.

Key Features

• Compatible with roof pitches from 1/12 to 5/12 for low to moderate slope installations
• Designed for direct vent pipe roof penetration applications
• Provides a weathertight seal to prevent water intrusion at the roof deck
• Suitable for residential and light commercial direct vent systems

Compatibility

Designed as an OEM-style replacement or new-installation flashing for direct vent pipe systems terminating through roofs with a pitch of 1/12 to 5/12.

Installation Notes

Installation is typically performed by a licensed HVAC technician or roofing professional in accordance with local building codes and the appliance manufacturer's venting instructions. The vent system should be fully de-energized and the appliance shut off before flashing work begins at the roof penetration. Standard roofing tools and compatible sealants or flashing tape are typically used to integrate the flashing with surrounding roofing materials. Follow all applicable mechanical and building codes for vent termination clearances and weatherproofing requirements.