5 FLASHING DBL WALL

5" FLASHING DBL WALL is a 5-inch double-wall roof flashing used in plumbing vent or exhaust roof penetrations.

🔧 What it is

• Size: 5 inch (fits 5" pipe/vent)
• Type: Roof flashing
• Construction: DBL WALL = double-wall design (inner + outer sleeve)
• Material: typically aluminum, galvanized steel, or rubber boot + metal base depending on style

⚙️ What it does

• Seals where a 5" pipe passes through a roof
• Prevents:
  • Water leaks
  • Roof membrane damage
  • Debris entry around penetration
• Allows pipe movement while maintaining a watertight seal

🧱 Key features

• Double-wall construction
  • Inner sleeve seals pipe
  • Outer flange seals roof surface
• Designed for vent stacks, exhaust pipes, or mechanical vents
• Compatible with flat or pitched roofs (varies by model)
• Usually paired with roofing sealant or membrane flashing system

🏗️ Typical applications

• Plumbing vent stacks
• HVAC exhaust penetrations
• Commercial roof piping systems
• Mechanical room roof exits
• Industrial venting systems

🧠 Simple explanation

It’s basically a roof gasket and sleeve that seals around a 5-inch pipe where it comes through the roof so water doesn’t leak in.

💡 Why “double wall” matters

• Adds extra sealing layer
• Improves durability against weather and movement
• Better long-term waterproofing than single-wall flashings