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Bay Cities Metal Aluminum Roll Valley Flashing, Mill Finish, 50 ft. Rolls
Regular price $187.00Orders start at $399 — combine any items to reach the minimum. Learn more
Bay Cities Metal Aluminum Roll Valley Flashing, Mill Finish, 50 ft. Rolls
Bay Cities Aluminum Roll Valley Flashing is mill-finish aluminum supplied in 50 ft. rolls for channeling water through roof valleys. The line is offered in 8 in., 14 in. and 20 in. widths, so one roll can be sized to the valley. Each roll is the sell unit and pairs with underlayment and shingle installation in open or closed valleys.
Key Features:
- Aluminum Construction: Rolled aluminum resists rust and forms easily on the roof.
- Mill Finish: Supplied in a mill finish suitable for under-shingle valley applications.
- Three Widths: Available in 8 in., 14 in. and 20 in. widths to match valley requirements.
- 50 ft. Rolls: Each roll provides 50 ft. of continuous valley flashing with no end joints.
- Easy Forming: Roll form conforms quickly to the valley centerline during installation.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | Bay Cities Metal |
| Sell unit | 1 roll, 50 ft. |
| Product line | Bay Cities Aluminum Roll Valley Flashing |
| Available colors | Mill |
| Available sizes | ['8 in. x 50 ft.', '14 in. x 50 ft.', '20 in. x 50 ft.'] |
| Material | Aluminum |
| Color / finish | Mill |
| Dimensions | 8 in., 14 in. or 20 in. wide x 50 ft. long |
| Length | 50 ft. |
| Width | 8 in., 14 in., or 20 in. by size |
| Intended use | Roof valley flashing |
Coverage & How Much You Need:
One roll covers 50 linear feet of valley. Choose the 8 in. roll for narrow valleys and the 14 in. or 20 in. roll where wider metal or deeper water flow calls for more coverage; local practice often calls for at least 24 in. total valley width, so pair or select widths accordingly.
Fit and Compatibility:
Works under asphalt, metal and other shingle systems where roll valley flashing is specified. Underlayment, valley trim details and shingles are installed separately to the roofing manufacturer's requirements.
Frequently Asked Questions (FAQ):
Q: What widths are available?
A: The line comes in 8 in., 14 in. and 20 in. widths, each in 50 ft. rolls with a mill finish.
Q: How much does one roll cover?
A: Each roll provides 50 linear feet of valley flashing.
Q: Which width should I choose?
A: Match the width to your valley detail and expected water volume; wider valleys and heavier flow typically use the 14 in. or 20 in. roll.
Q: Is this painted?
A: No, it is supplied in mill finish aluminum.
Q: Can it be cut on site?
A: Yes, aluminum roll flashing can be cut and formed to length with standard tin snips.
Q: What gauge is the aluminum?
A: The sources do not state a thickness or gauge for this flashing.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
Roll valley flashing eliminates the end laps of piece metal, so it is the go-to choice for long valleys. Form a slight center crease before laying it so water stays in the valley, and lap upper courses over lower ones on long runs. Order the 20 in. width for wide or high-volume valleys and keep 8 in. on the truck for minor valleys and repairs.
Cut aluminum edges are sharp; wear cut-resistant gloves and eye protection, and use roof anchors when working on sloped valleys.
Order Bay Cities aluminum roll valley flashing in 8, 14 or 20 inch widths for continuous, rust-free valleys.
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