6" FLAT TO 6/12 CHIMNEY FLSH

This is a roofing penetration flashing component used to seal where a round 6-inch pipe or vent passes through a pitched roof (6/12 slope).

What it is

A metal chimney/vent flashing assembly:

• Fits a 6" round pipe or flue
• Designed for a 6/12 roof pitch (6 inches of rise per 12 inches of run)
• Includes a flat base that transitions to the roof slope

What it does

• Provides a weather-tight seal around a roof penetration
• Prevents water intrusion at the chimney/vent pipe
• Directs water away from the pipe and roof opening
• Matches the roof slope for a proper fit and seal

Key features

• Material: typically galvanized steel, aluminum, or lead-coated steel (depending on spec)
• Configuration:
  • Flat base that adapts to roof surface
  • Collar sized for 6" pipe
  • Built specifically for 6/12 pitch roofs
• Designed for roof waterproofing at pipe penetrations

Common applications

• Plumbing vent stacks
• Furnace or boiler flue penetrations
• Roof exhaust vents
• Mechanical roof penetrations in residential/commercial buildings

Quick note

• “Flat to 6/12” = base is shaped for a 6/12 pitched roof
• Correct pitch matching is important to prevent leaks and ensure proper water shedding

If you want, I can also break down how roof pitch flashings are labeled (4/12, 6/12, 8/12, etc.) so you can read them instantly on material lists.