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Roof Flashing

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SKU 852901

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

Original price $16.54 - Original price $16.54
Original price
$16.54
$16.54 - $16.54
Current price $16.54
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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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SKU 394292

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

Original price $24.28 - Original price $24.28
Original price
$24.28
$24.28 - $24.28
Current price $24.28
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About This Product The Rain Diverter 4 in. T-Top Exhaust Vent Pipe Bonderized Steel Gray 26-Gauge is a trusted 1-piece roof exhaust with a low silh...

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SKU 048677

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

Original price $30.58 - Original price $30.58
Original price
$30.58
$30.58 - $30.58
Current price $30.58
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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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SKU 927748

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

Original price $2.68 - Original price $2.68
Original price
$2.68
$2.68 - $2.68
Current price $2.68
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About This Product The Metal Sheets 8 in. x 12 in. Shingle Galvanized Steel Metallic 28-Gauge, like other flat flashing shingles, is a versatile a...

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SKU 965721

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

Original price $22.13 - Original price $22.13
Original price
$22.13
$22.13 - $22.13
Current price $22.13
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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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SKU 133223

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

Original price $106.00 - Original price $106.00
Original price
$106.00
$106.00 - $106.00
Current price $106.00
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About This Product The Metal Sheets 5 in. x 7 in. Galvanized Steel Metallic 28-Gauge, like other flat flashing shingles, is a versatile addition t...

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SKU 518016

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

Original price $16.33 - Original price $16.33
Original price
$16.33
$16.33 - $16.33
Current price $16.33
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About This Product The Gibraltar Building Products Rain Diverter 4 in. x 4 in. x 8 in. Kickout Aluminum Black protects your home from moisture inf...

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SKU 738701

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

Original price $17.57 - Original price $17.57
Original price
$17.57
$17.57 - $17.57
Current price $17.57
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About This Product This Gibraltar Drip Edge Flashing 4 in. x 2 in. x 10 ft. L-90 Gravel Stop Bonderized Steel Gray 28-Gauge is made from trusted 2...

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SKU 619035

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

Original price $28.00 - Original price $28.00
Original price
$28.00
$28.00 - $28.00
Current price $28.00
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About This Product This Vent Pipe Flashing 4 in. Galvanized Steel Metallic with FHA Base 26-Gauge meets or exceeds FHA specifications. This pipe fl...

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SKU 855490

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

Original price $22.98 - Original price $22.98
Original price
$22.98
$22.98 - $22.98
Current price $22.98
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About This Product Step Flashing 3 in. x 7 in. Galvanized Steel Metallic 28-Gauge (25-Pack) is used to protect chimneys, skylights, dormers and ro...

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SKU 531208

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

Original price $24.68 - Original price $24.68
Original price
$24.68
$24.68 - $24.68
Current price $24.68
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About This Product This Vent Pipe Flashing 3 in. Galvanized Steel Metallic with FHA Base 26-Gauge meets or exceeds FHA specifications. This pipe fl...

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SKU 123106

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

Original price $39.98 - Original price $39.98
Original price
$39.98
$39.98 - $39.98
Current price $39.98
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About This Product The Rain Diverter 3-1/2 in. x 6 in. x 1/2 in. x 10 ft. Tile Pan Galvanized Steel Metallic 26-Gauge is flashing used where a til...

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SKU 369944

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

Original price $66.98 - Original price $66.98
Original price
$66.98
$66.98 - $66.98
Current price $66.98
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About This Product The W-Valley 24 in. x 10 ft. Galvanized Steel Metallic 26-Gauge protects the critical area of your roof where two slopes come t...

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SKU 137755

Flashing Angle 2 in. x 6 in. x 10 ft. Roof-to-Wall Bonderized Steel Gray 28-Gauge

Original price $25.68 - Original price $25.68
Original price
$25.68
$25.68 - $25.68
Current price $25.68
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About This Product The Gibraltar Flashing Angle 2 in. x 6 in. x 10 ft. Roof-to-Wall Bonderized Steel Gray 28-Gauge is made from trusted 28-Gauge b...

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SKU 602792

Drip Edge Flashing 2 in. x 3 in. x 10 ft. L-90 Galvanized Steel Charcoal 28-Gauge

Original price $17.16 - Original price $17.16
Original price
$17.16
$17.16 - $17.16
Current price $17.16
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About This Product The Gibraltar Drip Edge Flashing 2 in. x 3 in. x 10 ft. L-90 Galvanized Steel Charcoal 28-Gauge is made from reliable 28-Gauge ...

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SKU 316594

Drip Edge Flashing 2 in. x 3 in. x 10 ft. L-90 Bonderized Steel Gray 28-Gauge

Original price $13.43 - Original price $13.43
Original price
$13.43
$13.43 - $13.43
Current price $13.43
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About This Product The Gibraltar Drip Edge Flashing 2 in. x 3 in. x 10 ft. L-90 Bonderized Steel Gray 28-Gauge is galvanized steel that has been t...

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SKU 660907

Flashing Angle 2 in. x 3 in. x 10 ft. Roof-to-Wall Galvanized Steel 26-Gauge

Original price $13.43 - Original price $13.43
Original price
$13.43
$13.43 - $13.43
Current price $13.43
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About This Product The Gibraltar Flashing Angle 2 in. x 3 in. x 10 ft. Roof-to-Wall Galvanized Steel 26-Gauge is made from professional grade 26-G...

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SKU 971026

Drip Edge Flashing 2 in. x 2 in. x 10 ft. L-90 Galvanized Steel Brown 28-Gauge

Original price $9.70 - Original price $9.70
Original price
$9.70
$9.70 - $9.70
Current price $9.70
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About This Product The Gibraltar Drip Edge Flashing 2 in. x 2 in. x 10 ft. L-90 Galvanized Steel Brown 28-Gauge is made from reliable 28-Gauge gal...

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SKU 639221

Drip Edge Flashing 2 in. x 2 in. x 10 ft. L-90 Galvanized Steel White 28-Gauge

Original price $9.70 - Original price $9.70
Original price
$9.70
$9.70 - $9.70
Current price $9.70
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Delivery

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About This Product The Gibraltar Drip Edge Flashing 2 in. x 2 in. x 10 ft. L-90 Galvanized Steel White 28-Gauge is made from reliable 28-Gauge gal...

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SKU 351574

Drip Edge Flashing 2 in. x 2 in. x 10 ft. L-90 Galvanized Steel Metallic 28-Gauge

Original price $9.26 - Original price $9.26
Original price
$9.26
$9.26 - $9.26
Current price $9.26
In stock

Delivery

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About This Product The Gibraltar Drip Edge Flashing 2 in. x 2 in. x 10 ft. L-90 Galvanized Steel Metallic 28-Gauge is made from reliable 28-Gauge ...

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SKU 226837

Vent Pipe Flashing 2 in. Galvanized Steel Metallic with FHA Base 26-Gauge

Original price $19.23 - Original price $19.23
Original price
$19.23
$19.23 - $19.23
Current price $19.23
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About This Product This Vent Pipe Flashing 2 in. Galvanized Steel Metallic with FHA Base 26-Gauge meets or exceeds FHA specifications. This pipe fl...

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SKU 478471

Roll Valley 14 in. x 25 ft Aluminum Metallic 30-Gauge

Original price $44.58 - Original price $44.58
Original price
$44.58
$44.58 - $44.58
Current price $44.58
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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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SKU 137604

Drip Edge Flashing 1 in. x 2 in. x 10 ft. C3 Galvanized Steel Metallic 28-Gauge

Original price $7.32 - Original price $7.32
Original price
$7.32
$7.32 - $7.32
Current price $7.32
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About This Product The Gibraltar Drip Edge Flashing 1 in. x 2 in. x 10 ft. C3 Galvanized Steel Metallic 28-Gauge is made from reliable 28 gauge ga...

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SKU 265392

Rain Diverter 1/4 in. x 5-3/4 in. Aluminum Metallic Vent with Black Collar

Original price $33.68 - Original price $33.68
Original price
$33.68
$33.68 - $33.68
Current price $33.68
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About This Product Gibraltar's Rain Diverter 1/4 in. x 5-3/4 in. Aluminum Metallic Vent with Black Collar accommodates roof penetrations from 1/4 i...

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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!

Roof Flashing FAQ

 What types of flashing are available from Supply Ontime?

The store stocks drip-edge, roll, step, transition, and vent-pipe flashing made from galvanized steel, aluminum, and rubber. Sizes range from 2-in. roll tape to 10-ft Z-bar flashing. Colors include black, brown, gray, metallic silver, and white. Each type is designed to cover specific roof transitions and penetrations. Contractors can mix and match materials for different sections of the roof.

How do I choose the right flashing material?

Aluminum flashing resists corrosion and is suitable near the coast, while galvanized steel offers strength for inland homes. Rubber pipe boots provide a watertight seal around vent pipes. Match the flashing color to your shingle or fascia color to maintain curb appeal. The choice often depends on budget and long-term maintenance needs. Supply Ontime can advise based on the project location and style.

Are there code requirements for flashing in LA?

Los Angeles building codes require drip-edge flashing at eaves and rakes and proper flashing at wall intersections and roof penetrations to prevent water intrusion. Use step flashing under each shingle course where roofs meet walls and vent-pipe flashings that conform to pipe diameter. These codes are in place to protect against leaks during seasonal rains. Inspectors often check flashing placement before signing off on roofing work.

 Does Supply Ontime deliver flashing components promptly?

Yes. Flashing pieces up to 10 ft can be delivered same-day or in a scheduled window. For large orders of steel flashing, note staircases or elevator access so drivers can safely transport long pieces. Truck bed, curbside, and white-gloves delivery options are available. Orders can also be combined with shingles and underlayment to streamline shipments.