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Bay Cities Metal Galvanized Roll Valley Flashing, 8 in. to 20 in. x 50 ft. Rolls, Mill or Brown Finish
Regular price $134.00Orders start at $399 — combine any items to reach the minimum. Learn more
Bay Cities Metal Galvanized Roll Valley Flashing, 8 in. to 20 in. x 50 ft. Rolls, Mill or Brown Finish
Bay Cities Metal roll valley flashing is a galvanized metal valley liner supplied in 50-foot rolls for shingle roof valleys. Choose from 8 in., 10 in., 14 in., or 20 in. widths in mill finish, or an 8 in. brown-finished roll. One roll covers 50 linear feet of valley and installs under the shingle courses.
Key Features:
- Galvanized protection: Made from galvanized metal for corrosion resistance in roof valleys.
- 50 ft. rolls: Each roll provides 50 linear feet of continuous valley coverage.
- Multiple widths: Available in 8 in., 10 in., 14 in., and 20 in. widths to match valley width requirements.
- Mill or brown: Offered in bare mill galvanized or a brown finish for darker roof palettes.
- W-center design: Roll form lies flat and can be pre-formed into a W or center-crimp valley shape on site.
- Wide valley option: The 20 in. width suits wide or high-volume valleys that shed more water.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | Bay Cities Metal |
| Sell unit | 1 roll, 50 ft. |
| Product line | Roll Valley Flashing |
| Available colors | ['Mill', 'Brown'] |
| Available sizes | ['8 in. x 50 ft.', '10 in. x 50 ft.', '14 in. x 50 ft.', '20 in. x 50 ft.'] |
| Material | Galvanized steel |
| Finish / texture | Mill galvanized or brown |
| Length | 50 ft. |
| Dimensions | ['8 in. x 50 ft.', '10 in. x 50 ft.', '14 in. x 50 ft.', '20 in. x 50 ft.'] |
| Coverage per unit | 50 linear ft. of valley per roll |
| Intended use | Valley flashing under shingle roof coverings |
Coverage & How Much You Need:
One roll lines 50 linear feet of valley. Select width based on valley span; larger roof areas and steep or long valleys typically call for the 14 in. or 20 in. widths.
Fit and Compatibility:
Designed for use under asphalt shingle and other steep-slope roof coverings; pairs with other Bay Cities Metal flashing products such as step flashing and eave closures. Underlayment and shingles are installed over it per standard valley detailing.
Frequently Asked Questions (FAQ):
Q: What is included with an order?
A: Each order unit is one 50-foot roll of roll valley flashing in the width and finish you select.
Q: What width should I choose?
A: Wider rolls such as 14 in. or 20 in. suit long, steep, or high-run valleys, while 8 in. or 10 in. works for standard valleys; local code minimums may also apply.
Q: Does the roll need to be formed before installation?
A: Roll flashing is typically bent to a center or W-crimp on site so it sheds water across the valley centerline.
Q: Will the mill finish rust?
A: The material is galvanized, which provides a zinc coating for corrosion protection.
Q: Is the brown version painted on both sides?
A: The sources list a brown color variant of the 8 in. x 50 ft. roll; coating details are not specified.
Q: How much valley does one roll cover?
A: Each roll is 50 ft. long, so divide total valley linear footage by 50 to determine rolls needed.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
Size the roll width to the valley's contributing roof area: the more area draining to the valley, the wider the metal. Always lap valley metal a minimum of several inches onto each deck and keep laps shingled-direction so water rides over, not under. The galvanized mill finish can be left exposed in valleys under shingles, while the brown variant suits darker roofs where the metal may be visible at the valley edge.
Metal roll edges are sharp; wear cut-resistant gloves and eye protection when cutting and forming valley flashing.
Order Bay Cities Metal galvanized roll valley flashing in the width and finish your valley job needs.
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