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Berger Building Products Pre-Bent Aluminum Step Flashing, 3 in. x 4 in. x 7 in., Mill Finish - Pack of 100
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Berger Building Products Pre-Bent Aluminum Step Flashing, 3 in. x 4 in. x 7 in., Mill Finish - Pack of 100
Berger pre-bent aluminum step flashing pieces are 3 in. x 4 in. x 7 in. with a mill finish, pre-bent at 4 in. to dress the shingle-to-wall intersection. Sold as a pack; protects the most vulnerable roof areas where a sloped roof meets a vertical wall. Meets ASTM B209 aluminum standards.
Key Features:
- Pre-Bent Convenience: Arrives pre-bent at the 4 in. leg, saving job-site bending time.
- Mill Finish Aluminum: Lightweight, rust-resistant mill finish aluminum flashing.
- Step Flashing Size: 3 in. x 4 in. x 7 in. pieces sized for standard shingle courses.
- Leak Protection: Protects against water infiltration at the shingle-to-wall intersection.
- ASTM B209: Applicable standard ASTM 8209 (ASTM B209) for aluminum sheet.
- Bulk Pack: Supplied in bulk bundling for whole-roof jobs.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | Berger Building Products |
| Manufacturer model | SFM347 |
| Sell unit | 1 bundle (piece count varies by listing: title states 100, specs state 500/box) |
| Product line | Pre-bent step flashing |
| Profile / style | Pre-bent step flashing |
| Color / finish | Mill finish aluminum |
| Nominal size | 3 in. x 4 in. x 7 in. |
| Height | 4 in. bend |
| Dimensions | 3 in. x 7 in. legs, 4 in. height |
| Thickness | .011 in. (as listed at one distributor; catalog description notes .010 MF) |
| Material | Aluminum |
| Pack quantity | Bulk bundle (title states pack of 100; specs list 500 pieces per box/carton) |
| Applicable standards | ASTM 8209 |
| Intended use | Step flashing where sloped roofing meets vertical walls, chimneys and skylights |
| Weight | 24.97 lb per bundle |
Coverage & How Much You Need:
Each 7 in. long piece covers one shingle course; plan roughly one piece per course per wall intersection and add extra at corners and openings.
Fit and Compatibility:
Use with asphalt shingles, wood shakes and other steep-slope roof coverings where a vertical wall or dormer requires step flashing. Pair with Berger counterflashing, roof cement and underlayment for the full detail.
Frequently Asked Questions (FAQ):
Q: What is included in the order?
A: One bulk bundle of pre-bent aluminum step flashing pieces, 3 in. x 4 in. x 7 in., mill finish.
Q: How many pieces are in the bundle?
A: The listing title states a pack of 100, while the spec lines list 500 pieces per box/carton; confirm the bundle count before ordering.
Q: What is the bend height?
A: The flashing is pre-bent at 4 in. with 3 in. and 7 in. legs.
Q: What thickness is the aluminum?
A: One distributor lists .011 in.; the catalog item description references .010 MF.
Q: Where is step flashing used?
A: It is installed at the intersection of a sloped roof and a vertical wall, one piece per shingle course, to protect against water infiltration.
Q: Is aluminum rust resistant?
A: Yes, mill finish aluminum is rust-resistant and much lighter than galvanized steel.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
Pre-bent aluminum step flashing saves significant time on dormers and sidewalls - each 7 in. piece dresses one shingle course with a 3 in. leg on the roof and 4 in. up the wall. Step pieces must be lapped shingle-style and never face-nailed to the wall; cover with siding or counterflashing. Aluminum is the right pick where weight and rust resistance matter, but avoid direct contact with pressure-treated lumber and masonry runoff. Verify the exact piece count and gauge on the bundle before ordering for large jobs.
Metal flashing edges are sharp; wear cut-resistant gloves and eye protection when handling, cutting and bending step flashing.
Order Berger pre-bent aluminum step flashing 3 in. x 4 in. x 7 in. to speed up your next sidewall detail.
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