SKU: 63222515005

CMI 18-in x 120-in Silver Galvanized Steel Step Flashing, 28-Gauge W-Valley (V18G)

Sale price$16.75 Regular price$18.61
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Description

CMI 18-in x 120-in Silver Galvanized Steel Step Flashing, 28-Gauge W-Valley (V18G)18 in x 10 ft Galvanized Steel W Valley Step Flashing Durable 28 gauge galvanized steel W valley flashing that channels water where roof slopes meet. Sized 18 inches wide by 10 feet long, it protects valleys and chimney intersections with a silver finish for long lasting corrosion resistance. Key Features: W Valley Design: Directs rainwater safely down roof valleys to prevent leaks Heavy Duty Material: 28 gauge galvanized steel resists rust and

18-in x 10-ft Galvanized Steel W-Valley Step Flashing

Durable 28-gauge galvanized steel W-valley flashing that channels water where roof slopes meet. Sized 18 inches wide by 10 feet long, it protects valleys and chimney intersections with a silver finish for long-lasting corrosion resistance.


Key Features:

  • W-Valley Design: Directs rainwater safely down roof valleys to prevent leaks
  • Heavy-Duty Material: 28-gauge galvanized steel resists rust and corrosion
  • Generous Size: 18-in width x 120-in length for broad coverage in valley applications
  • Versatile Use: Suitable for roofs and chimneys; ideal with composite shingles or wood shakes
  • Safety Note: Sharp metal edges—use gloves during handling and installation

Specifications Table:

Specification Details
Type Sheet flashing
Style W-valley
Material Galvanized steel
Color/Finish Family Silver
Manufacturer Color/Finish Silver
Width (Inches) 18
Length (Inches) 120
Length Measurement 10-ft
Gauge 28
Depth (Inches) 0.0156
Package Quantity 1
For Use with Roofs Yes
For Use with Chimneys Yes
For Use with Gutters Yes
For Use with Doors No
For Use with Decks No
For Use with Windows No
For Use with Skylights No
For Use with Vents No
For Use with Pipes No
UNSPSC 30151600
Center Peak Height 1-1/4 in (per romance copy)
Side Hems 1/2 in closed hems (per romance copy)
Prop 65 Warning Yes
Warranty None

Frequently Asked Questions (FAQ):

Q: What roof applications is this flashing designed for?
A: It’s a W-valley sheet flashing intended for roof valleys where two slopes meet; can also be used around chimneys.


Q: What are the dimensions and gauge?
A: 18 inches wide, 120 inches (10 ft) long, and 28-gauge galvanized steel.


Q: Can it be used with composite shingles or wood shakes?
A: Yes—18-inch width works for comp shingle or wood shake installations.


Q: How is it installed?
A: Lay membrane/underlayment first, position flashing at the lowest part of the valley, nail along outer edges about 10 inches on center, and overlap successive pieces 10–12 inches with roofing cement.


Q: Is there a warranty?
A: None is listed for this product.


A Clean, Resilient Line for Roof Valleys

This galvanized W-valley flashing draws a crisp silver seam through the roofscape, guiding water with quiet precision. The folded hems add a subtle, tailored edge and enhance strength. Pair it with dark architectural shingles for a refined contrast and a polished, professional finish. It’s a small detail that elevates performance and the overall look—essential for a well-composed, enduring roof.


Protect your roof’s most vulnerable junctions—choose this 28‑gauge galvanized W‑valley flashing for reliable, professional-grade drainage.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 63222515005

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Hannah
Port Orchard, US
★★★★★ 5
Easy to Hang
Color: Black, Size: 3 Pack
This shelf is easy to hang, comes with great anchors and looks perfect. The quality looks nice and is was an easy hanging process compared to other shelves. Worth it for the price.
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Reviewed in the United States on May 18, 2026
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B from RI
Chelsea, US
★★★★★ 5
One of the best deals available!
Color: White, Size: 2 Pack
Extremely sturdy, good looking and easy to install. I have a couple of dozen feet of assorted lengths in the kitchen, bedroom, living room and foyer. Holding all sorts of antique clocks, audio equipment and cooking stuff from my flours and assorted cornmeals to cases of powdered “lemonade”.
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Reviewed in the United States on April 18, 2026
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JJW
Bozeman, US
★★★★★ 3
Mounting system doesn’t align on one of three shelves.
Color: Walnut, Size: 3 Pack
Nice shelves. Install was super easy except on one of the three shelves. The main mounting shelf holes were off so the shelf will not slip onto horizontal mounting poles unless I modify the shelf. So a 20 minute job becomes a two hour job. The mounting system does appear very sturdy just not aligned.
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Reviewed in the United States on January 4, 2026
M
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Miah
Pawtucket, US
★★★★★ 5
Solid Floating Shelves 🛠️🏠
Color: Black, Number Of Shelves: 4, Size: 15.7in
I have installed four sets of the black floating shelves in my office. They are made of high quality materials, featuring a sophisticated black woodgrain finish with a natural texture. Supposedly, each unit can handle up to 22 pounds, though I would not recommend testing that limit with your vintage bowling ball collection if you value your flooring. They are awesome. The value is good for a set of two. Each shelf measures 22x7x1 (56x17x3 cm) inches, providing a decent amount of storage for books or decor. The installation was straightforward since the hardware for multiple wall types was included. They work well in the kitchen for spices or in the bedroom for personal belongings. One tip for a secure fit: use a level during installation and make sure the bracket is flush against the wall before sliding the shelf on, or your photos might look like they are sliding off a mountain 📐 These shelves offer a clean, modern look and stay stable once mounted correctly. They are a practical choice for adding functional display space to any room 🖼️
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Reviewed in the United States on May 4, 2026
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Tyler Kline
West Palm Beach, US
★★★★★ 5
Good looking shelves and easy install - skip the included drywall anchors
Color: Black, Number Of Shelves: 2, Size: 22in
I installed these shelves in a bedroom to get things off my dresser and some decor. Once mounted they look really nice. The black finish looks clean and modern and they blend in well with the room. Installation was pretty straightforward. The metal bracket mounts to the wall first and then the shelf slides over the bracket. As long as you take your time lining things up it’s a simple project. One thing I strongly recommend is not using the white plastic self-drilling drywall anchors that come with the kit. I’ve used that style before on other projects and they tend to strip out easily and leave larger holes in drywall. I used better anchors instead and the shelves mounted much more securely. The rest of the hardware worked fine and once installed the shelves feel solid and hold items well. Pros - Clean modern look - Easy installation - Feels solid once mounted - Good size for books or decor Cons - The small level included isn’t very accurate — use your own level - One of the metal brackets was slightly bent out of the box but straightened out easily Helpful tip: Use your own level and better drywall anchors if you have them. It makes installation easier and the shelves will mount much more securely. Final thoughts: For the price these are nice looking floating shelves that install easily and work well for light storage and decor.
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Reviewed in the United States on March 13, 2026

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