Gibraltar Building Products 1-1/2-in x 18.75-in Galvanized Steel Vent and Pipe Flashing, RJ15FHA-SP

Regular price $16.64

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1-1/2-in Galvanized Steel Vent/Pipe Flashing

Durable galvanized steel roof jack flashing for 1-1/2-in vent pipes. One-piece construction helps seal roof penetrations to prevent leaks and installs easily on pitches from flat to 5:12.


Key Features:

  • Leak Protection: One-piece galvanized steel flashing seals around 1-1/2-in vent pipes to help prevent roof leaks
  • Easy Installation: Slide over pipe and secure with roofing nails; suitable for residential or commercial roofs
  • All-Pitch Design: Works on roof pitches from flat to 5:12 for versatile application
  • Durable Build: Galvanized steel resists weathering; top opening approx. 1-15/16-in
  • Sized for Coverage: 18.75-in length by 15-in width provides ample flange area

Specifications Table:

Specification Details
Fits Pipe Size 1-1/2-in
Length (Inches) 18.75
Width (Inches) 15
Primary Material Galvanized steel
Color/Finish Family Silver
Manufacturer Color/Finish Silver
Maximum Temperature (Fahrenheit) 180
Pitch Range Flat to 5:12
Top of Cone Opening 1-15/16 in
Construction One-piece roof jack flashing
Use Case Residential or commercial vent/exhaust pipes
Warranty None
UNSPSC 30151600
Product Height (Cone) 3 in (per spec sheet image)
Flange Dimensions (from image) Approx. 18.5 in x 16 in layout reference

Frequently Asked Questions (FAQ):

Q: What pipe size does this flashing fit?
A: It is designed for 1-1/2-in diameter vent pipes, with a top cone opening of about 1-15/16 in.


Q: What roof pitches are compatible?
A: It fits all pitches from flat up to 5:12.


Q: What is the material?
A: Galvanized steel for durability and weather resistance.


Q: Is it suitable for residential use?
A: Yes, it’s suitable for both residential and commercial applications.


Q: What temperatures can it handle?
A: Maximum service temperature is 180°F (per manufacturer specs).


A Clean, Functional Accent for a Watertight Roofline

This streamlined galvanized flashing brings a refined, utilitarian polish to the roofscape while doing the heavy lifting of water management. I love the single-piece cone silhouette—it feels purposeful and neat against shingles. Pair it with crisp ridge caps and a cool gray shingle palette for a cohesive, modern envelope. Practical and poised, it’s a subtle essential for elevated, leak-free living.


Protect roof penetrations with this easy-install galvanized flashing—add it to your project plan today.

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