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Roof Flashing

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Roll Flashing Tape 6 in. x 25 ft. Aluminum Silver

$17.98 - $17.98
$17.98
$17.98 - $17.98
$17.98
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About This Product RESISTO Repair and Seal Tape is a self-adhesive membrane composed of SBS Modified Bitumen. The surface is protected by an alumi...

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Pipe Seal 1 in. x 6 in. Self-Adhering Rubber White

$79.97 - $79.97
$79.97
$79.97 - $79.97
$79.97
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About This Product Let Henry simplify your next Henry TPO Membrane installation with our peel and stick Henry Pipe Seal. Pipe Seal is a cured, pre...

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Rain Diverter 2 in. SE Roof Vent Pipe Steel 24-Gauge

$9.21 - $9.21
$9.21
$9.21 - $9.21
$9.21
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About This Product The Halex 2 in. Service Entrance Roof Flashing prevents water leaks where a conduit mast comes out of the roof surface. This ste...

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Rain Diverter 2-1/2 in. SE Roof Vent Pipe Steel

$11.59 - $11.59
$11.59
$11.59 - $11.59
$11.59
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About This Product Slip the Halex 2-1/2 in. Service Entrance Roof Flashing over a conduit mast to help prevent water from leaking into the opening....

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Rain Diverter 7 in. T-Top Exhaust Vent Pipe Bonderized Steel Gray 26-Gauge

$26.74 - $26.74
$26.74
$26.74 - $26.74
$26.74
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About This Product The T-Top 7 in. Bonderized Steel Exhaust Vent Pipe Flashing is a trusted 1-piece roof exhaust with a low silhouette designed for...

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Rain Diverter 4 in. T-Top Exhaust Vent Pipe Galvanized Steel Metallic 26-Gauge

$13.98 - $13.98
$13.98
$13.98 - $13.98
$13.98
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About This Product Gibraltar's 4 in. Galvanized Steel Sub-Base Flashing is designed to fit under a T-Top in a tile roof application. The sub-base f...

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Rain Diverter 4 in. T-Top Exhaust Vent Pipe Bonderized Steel Gray 26-Gauge

$22.32 - $22.32
$22.32
$22.32 - $22.32
$22.32
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About This Product The T-Top 4 in. Bonderized Steel Exhaust Vent Pipe Flashing is a trusted 1-piece roof exhaust with a low silhouette designed for...

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Roll Valley 8 in. x 25 ft. Aluminum Metallic 30-Gauge

$21.58 - $21.58
$21.58
$21.58 - $21.58
$21.58
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About This Product Aluminum Roll Valley is a lightweight, rust-resistant flashing that can be bent, cut and shaped for many weatherproofing projec...

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Metal Sheets 8 in. x 12 in. Shingle Galvanized Steel Metallic 28-Gauge

$1.98 - $1.98
$1.98
$1.98 - $1.98
$1.98
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About This Product Flat flashing shingles are a versatile addition to any toolbox. Make custom step flashing to protect chimneys, skylights, dorme...

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Roll Valley 6 in. x 25 ft. Aluminum Metallic 30-Gauge

$18.70 - $18.70
$18.70
$18.70 - $18.70
$18.70
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About This Product Aluminum Roll Valley is a lightweight, rust-resistant flashing that can be bent, cut and shaped for many weatherproofing projec...

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Metal Sheets 5 in. x 7 in. Galvanized Steel Metallic 28-Gauge

$0.84 - $0.84
$0.84
$0.84 - $0.84
$0.84
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About This Product Flat flashing shingles are a versatile addition to any toolbox. Make custom step flashing to protect chimneys, skylights, dorme...

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Z Bar Flashing 5/8 in. x 10 ft. Bonderized Steel Metallic 28-Gauge

$8.98 - $8.98
$8.98
$8.98 - $8.98
$8.98
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About This Product Bonderized Steel Z-Flashing is made from 28-Gauge galvanized steel that has been treated to promote better paint adhesion. It i...

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Rain Diverter 4 in. x 4 in. x 8 in. Kickout Aluminum Black

$13.98 - $13.98
$13.98
$13.98 - $13.98
$13.98
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About This Product The Gibraltar Building Products Kick Out flashing protects your home from moisture infiltration where your wall meets your roof...

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Rain Diverter 4 in. x 4 in. x 10 ft. L-90 Galvanized Steel Metallic

$17.98 - $17.98
$17.98
$17.98 - $17.98
$17.98
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About This Product The Gibraltar Building Products L-Flashing protects your home from moisture infiltration where your wall meets your roof. L sha...

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Drip Edge Flashing 4 in. x 2 in. x 10 ft. L-90 Gravel Stop Bonderized Steel Gray 28-Gauge

$14.98 - $14.98
$14.98
$14.98 - $14.98
$14.98
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About This Product This Gibraltar Gravel Stop Flashing is made from trusted 28-Gauge bonderized steel. Bonderized steel is galvanized steel that h...

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Drip Edge Flashing 4 in. x 2 in. x 10 ft. Gravel Stop Galvanized Steel Metallic 26-Gauge

$17.74 - $17.74
$17.74
$17.74 - $17.74
$17.74
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About This Product This Gibraltar Gravel Stop Flashing is made from professional grade 26-Gauge galvanized steel. This Gravel Stop Flashing has a ...

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Vent Pipe Flashing 4 in. Galvanized Steel Metallic with FHA Base 26-Gauge

$24.98 - $24.98
$24.98
$24.98 - $24.98
$24.98
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About This Product This 1-piece galvanized steel roof jack meets or exceeds FHA specifications. This pipe flashing protects against leaks on kitche...

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Step Flashing 3 in. x 7 in. Galvanized Steel Metallic 28-Gauge (25-Pack)

$20.84 - $20.84
$20.84
$20.84 - $20.84
$20.84
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About This Product Step Flashing is used to protect chimneys, skylights, dormers and roof-to-wall intersections. Precision bent galvanized step fl...

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Drip Edge Flashing L-90 3 in. x 3 in. x 10 ft. Bonderized Steel Gray 28-Gauge

$13.98 - $13.98
$13.98
$13.98 - $13.98
$13.98
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About This Product The Gibraltar Building Products L-Flashing protects your home from moisture infiltration where your wall meets your roof. L sha...

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Vent Pipe Flashing 3 in. Galvanized Steel Metallic with FHA Base 26-Gauge

$21.97 - $21.97
$21.97
$21.97 - $21.97
$21.97
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About This Product This 1-piece galvanized steel roof jack meets or exceeds FHA specifications. This pipe flashing protects against leaks on kitche...

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Z Bar Flashing 3/8 in. x 10 ft. Galvanized Steel Metallic 28-Gauge

$6.34 - $6.34
$6.34
$6.34 - $6.34
$6.34
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About This Product Galvanized Steel Z-Flashing is made from 28-Gauge galvanized steel. It is used to protect the horizontal joints between sheets ...

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Rain Diverter 3-1/2 in. x 6 in. x 1/2 in. x 10 ft. Tile Pan Galvanized Steel Metallic 26-Gauge

$35.57 - $35.57
$35.57
$35.57 - $35.57
$35.57
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About This Product Tile Pan is flashing used where a tile roof intersects with a sidewall. When properly installed, Tile Pan will reliably channel...

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W-Valley 24 in. x 10 ft. Galvanized Steel Black 28-Gauge

$49.98 - $49.98
$49.98
$49.98 - $49.98
$49.98
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About This Product W-Valley Flashing protects the critical area of your roof where two slopes come together to form a valley. When properly instal...

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W-Valley 24 in. x 10 ft. Galvanized Steel Metallic 26-Gauge

$54.70 - $54.70
$54.70
$54.70 - $54.70
$54.70
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About This Product W-Valley Flashing protects the critical area of your roof where two slopes come together to form a valley. When properly instal...

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Roof Flashing: What You Need to Know

Roof Flashing: What You Need to Know

Roof flashing, also known as weatherproofing metal trim or protective edge flashing, is an essential component in roofing systems designed to prevent water infiltration and direct moisture away from critical areas. Used in conjunction with shingles, tiles, or metal roofing, flashing ensures long-lasting protection against leaks, structural damage, and weather-related wear. Available in various colors, gauges, and styles, roof flashing is a crucial addition to residential and commercial roofing projects.

Types and Uses:

  • Drip Edge Flashing: Installed along roof edges to guide water away from the fascia and prevent damage to underlying structures. Ideal for extending roof life and enhancing drainage efficiency.
  • Roll Flashing: A flexible, continuous metal sheet that provides seamless protection along valleys, ridges, and transitions. It is widely used for custom installations and long-span coverage.
  • Step Flashing: Designed for use along chimneys, walls, and dormers, step flashing consists of small, overlapping metal sections that integrate with shingles to create a watertight barrier.
  • Transition Flashing: A specialized flashing used where roofing materials meet at different slopes or surfaces, ensuring proper water diversion in complex roofing designs.
  • Vent Pipe Flashing: Engineered to seal around roof penetrations such as plumbing vents, exhaust pipes, and HVAC ducting, preventing leaks at critical entry points.

Gauge Options:

  • 23-Gauge: A lightweight yet durable option, best suited for small residential applications and non-structural waterproofing.
  • 24-Gauge: Slightly thicker for improved strength, commonly used for standard roof flashing installations requiring added rigidity.
  • 26-Gauge: A popular balance between flexibility and durability, ideal for general-purpose flashing, step flashing, and drip edges.
  • 28-Gauge: A versatile and widely used thickness, providing cost-effective protection while maintaining ease of installation.
  • 30-Gauge: A heavier-duty option that offers enhanced strength and longevity for demanding roofing applications.
  • 32-Gauge: The thickest and most robust gauge, designed for commercial and industrial roofing where maximum durability is required.

Why Choose Supply Ontime?

At Supply Ontime, we offer reliable materials designed to meet your project’s needs. With same-day delivery across the Greater Los Angeles area, we make it easy to keep your projects on schedule. Order Roof Flashing now and get it delivered today!