Tamlyn SB Shingle Base Flashing — Adjustable Leak Protection at Wall and Chimney Transitions
The Tamlyn SB Shingle Base Flashing is engineered to protect against water infiltration at critical transition points where walls meet roofs and where chimneys connect to roof decking. Stocked in standard-gauge galvanized steel in four girth sizes from 9" to 18", each in 10-foot lengths, this flashing is designed to meet the demands of professional roofing and construction applications. It is suitable for both new construction and retrofit installations wherever a reliable, long-lasting watertight seal is required at roof transitions.
What sets the SB series apart from fixed-profile flashings is its inherent flexibility, which allows the installer to adjust the angle on the jobsite to match the actual roof slope without additional fabrication or special tools. This field-adjustability reduces waste, speeds installation, and eliminates the need to pre-order slope-specific profiles, giving contractors a single versatile solution that adapts to varying roof pitches in the field.
Key Features & Benefits
Field-Adjustable Angle
The flexible design of the SB flashing allows contractors to bend and set the profile angle on the jobsite to match any roof slope. This eliminates the need for multiple SKUs or custom fabrication when working across projects with varying pitches, saving both time and material costs.
Dual-Transition Protection
Specifically engineered to seal both wall-to-roof and chimney-to-roof connections, the SB flashing addresses two of the most common leak-prone areas in residential and commercial roofing. Proper coverage at these transitions significantly reduces callback risk and long-term moisture damage liability.
Galvanized Steel Construction
Stocked in standard-gauge galvanized steel for corrosion resistance at exposed roofline transitions. Builder-grade and 26-gauge material are available as special orders for projects with specific gauge requirements.
Painted Color Options
Factory painted finishes are available in stock colors — Almond (AM), Brown (BR), Black (BK), Charcoal (CB), and White (WH) — allowing the flashing to blend with roofing and siding aesthetics. Special order colors are also available for projects requiring custom color matching.
Consistent Profile Across Multiple Sizes
The SB series is offered in a range of item IDs (SB4120, SB6314, SB6512, SB61112) to accommodate different dimensional requirements across project types. Contractors can standardize on the Tamlyn SB system across a variety of roof configurations.
Four Girth Sizes from 9" to 18"
With girths of 9" (4" x 4-1/2"), 10" (6" x 3"), 12" (6" x 5-1/2"), and 18" (6" x 11-1/2"), the SB line covers everything from standard residential wall-to-roof details up to large chimney bases and tall transition conditions — all in 10-foot lengths sold per piece.
Common Applications
Wall-to-Roof Transitions
The SB flashing is specifically designed to seal the junction where a vertical wall surface meets the roof plane, one of the most water-vulnerable areas on any structure. Proper installation here prevents water from tracking behind siding and causing rot or mold in the wall assembly.
Chimney-to-Roof Connections
Chimney bases require robust flashing to prevent water infiltration at the point where masonry or framed chimney structures penetrate the roof. The SB series provides a reliable base layer for this application.
Residential Roofing
Ideal for new construction and re-roofing projects on single-family and multi-family residential structures where shingle roofing systems require code-compliant transition flashing.
Light Commercial Roofing
Suitable for low-slope and conventional-pitch commercial roofing applications where shingle or similar roof coverings are used and wall or penetration transitions require a durable base flashing.
Retrofit and Repair Projects
The field-adjustable angle makes the SB flashing particularly useful in repair scenarios where existing slope conditions may not conform to standard profiles, allowing the installer to adapt without custom fabrication.
Multi-Slope Roof Projects
On structures with multiple roof planes at varying pitches, the SB's on-site bend flexibility allows a single product to serve all transition areas, simplifying procurement and inventory management for the contractor.
Compatible Materials
- Asphalt shingles
- Wood siding and sheathing substrates
- Masonry and brick chimney structures
- Framed chimney chases
- OSB and plywood roof decking
- 26-gauge galvanized steel (GZD) construction
- Standard and Builder-grade roofing assemblies
- Painted finish compatible with standard roofing and siding color palettes
Available Models / Sizes
| Item ID | Best For |
|---|---|
| SB4120 | 9" girth (4" x 4-1/2" legs, 1/2" hem) — standard residential wall-to-roof and chimney base details |
| SB6314 | 10" girth (6" x 3" legs, 1/4" kick) — taller vertical leg with a short horizontal return |
| SB6512 | 12" girth (6" x 5-1/2" legs, 1/2" hem) — mid-range coverage on both planes |
| SB61112 | 18" girth (6" x 11-1/2" legs, 1/2" hem) — largest profile for wide transitions and exposed conditions |
Product Documents
Technical Specifications
| Specification | Details |
|---|---|
| Product Series | SB — Shingle Base Flashing |
| Item IDs | SB4120, SB6314, SB6512, SB61112 |
| Stocked Material | Standard-gauge galvanized steel (other gauges special order) |
| Length | 10 ft per piece, sold individually |
| Angle Adjustment | Field-adjustable to fit roof slope on the jobsite |
| Finish Options | Unpainted or Painted (stock colors: Almond, Brown, Black, Charcoal, White) |
| Special Order Colors | Available upon request beyond standard stock colors |
| Primary Application | Wall-to-roof and chimney-to-roof transition sealing |
| Compatibility | Shingle roofing systems, residential and light commercial construction |
| Manufacturer | R.H. Tamlyn & Sons, Inc. |
Frequently Asked Questions
Q: Can the SB flashing be adjusted in the field to match any roof slope?
A: Yes. The SB Shingle Base Flashing is designed with flexibility that allows the installer to adjust the profile angle on the jobsite to conform to the actual roof pitch without additional tools or fabrication.
Q: What material grades are available for the SB flashing?
A: The SB series is stocked in standard-gauge galvanized steel; Builder-grade and 26-gauge material are available as special orders for projects with specific gauge requirements.
Q: What painted colors are available in stock?
A: Stock painted colors include Almond (AM), Brown (BR), Black (BK), Charcoal (CB), and White (WH). Other colors are available as special order items — contact Tamlyn for lead times and availability.
Q: Which item ID should I select for a standard residential chimney base application?
A: The SB4120 is the primary item for standard residential wall-to-roof and chimney base flashing. Consult the catalog page PDF or contact Tamlyn technical support at 1-800-334-1676 to confirm dimensional fit for your specific project.
Q: Is the SB flashing suitable for commercial roofing projects?
A: Yes. While primarily designed for residential shingle applications, the SB series is suitable for light commercial projects where shingle or similar roof systems are used and code-compliant transition flashing is required.
Q: How do I specify the correct color when ordering a painted SB flashing?
A: When ordering a painted finish, append the color code to the item ID — for example, SB4120-AM for Almond or SB4120-BK for Black. Contact your distributor or Tamlyn directly to confirm ordering conventions and availability of special order colors.