Tamlyn WF Series Steel Window Flashing — Reliable Water Management for Siding Installations
The Tamlyn WF Series is a line of galvanized steel window flashing profiles — 43 stocked configurations spanning 3" to 12" girths, in 10-foot lengths — designed to provide an inexpensive and easy-to-install solution for stopping water penetration behind siding. The horizontal shelf is sloped 5–7 degrees toward the outside wall, ensuring positive drainage away from the building envelope. This product is suited for contractors and builders working on residential and light commercial siding projects where moisture management at window openings is critical.
Stocked in standard-gauge galvanized steel — with 26-gauge options on select profiles and painted colors available as special orders — the WF Series offers flexibility across project specifications. Its straightforward design reduces installation time while maintaining consistent performance against water intrusion at vulnerable window head locations.
Key Features & Benefits
5–7 Degree Sloped Horizontal Shelf
The shelf angle is engineered to direct water away from the wall assembly, preventing pooling at the window head. This positive slope is critical in climates with heavy rainfall or where siding systems are susceptible to moisture infiltration behind the cladding.
Galvanized Steel Construction
Available in 26 Gauge Galvanized (GZD) steel, this flashing resists corrosion over the service life of the building. Galvanized construction is preferred in exterior applications where the flashing is exposed to weather during and after installation.
Standard-Gauge Galvanized, with 26 Ga Options
All profiles are stocked in standard-gauge galvanized steel, and select profiles (item IDs ending in -H) are also stocked in heavier 26-gauge galvanized for higher-exposure conditions. Painted finishes are available as special orders.
Painted Color Options Available
For projects requiring color-matched flashing, the WF Series is available in stock painted colors including Almond (AM), Brown (BR), Black (BK), Charcoal (CB), and White (WH). Special order colors are available for projects with custom aesthetic requirements, reducing the need for field painting.
Cost-Effective Moisture Control
The WF10 provides a proven, low-cost method of protecting the wall assembly at window openings without requiring specialty tools or complex installation techniques. This keeps labor costs down while meeting industry standards for water management.
Multiple Size Configurations
The WF series is available in a range of dimension combinations (A, B, and C measurements) to accommodate different window rough opening and siding profiles. Contractors can select the appropriate size for the specific application without field modification.
Common Applications
Window Head Flashing
The primary application is at the head of window openings, where the WF Series intercepts water running down the wall face and directs it to the exterior, preventing infiltration behind the siding.
Residential Siding Installation
Suited for use with lap siding, fiber cement, vinyl, and other common residential cladding systems where a positive drainage plane is required at window openings.
Light Commercial Construction
Applicable on light commercial buildings where window flashing is required per code and a cost-effective galvanized steel solution is preferred over custom-fabricated flashing.
New Construction and Retrofit
The WF10 can be installed during new construction or as a retrofit at existing window openings where inadequate flashing has led to moisture issues behind the cladding.
Color-Matched Trim Applications
Painted color options allow the WF Series to blend with window trim and siding systems, making it suitable for projects where exposed flashing aesthetics are a consideration.
Compatible Materials
- Lap siding (wood, fiber cement, engineered wood)
- Vinyl siding
- Stucco systems
- Brick veneer assemblies
- Painted substrates (with matching color options)
- Standard and builder-grade framed wall assemblies
- 26 Gauge Galvanized Steel (GZD)
- Builder (Bldr) grade material
- Standard (STD) grade material
Available Sizes
| Item ID | Girth | Profile | Notes |
|---|---|---|---|
| WF100 | 3" | 3/8" x 1" x 1-5/8" | — |
| WF100-105 | 3" | 3/8" x 1" x 1-5/8" | 105° angle |
| WF112 | 3" | 3/8" x 1-1/8" x 1-1/2" | — |
| WF106 | 3-1/2" | 1/2" x 1-1/2" x 1-1/2" | — |
| WF10 | 4" | 1/2" x 1-1/4" x 2-1/4" | — |
| WF10-105 | 4" | 1/2" x 1-1/4" x 2-1/4" | 105° angle |
| WF10-H | 4" | 1/2" x 1-1/4" x 2-1/4" | 26 Ga |
| WF103 | 4" | 1/2" x 1-1/2" x 2" | — |
| WF103-105 | 4" | 1/2" x 1-1/2" x 2" | 105° angle |
| WF103-H | 4" | 1/2" x 1-1/2" x 2" | 26 Ga |
| WF12134 | 4" | 1/2" x 1-3/4" x 1-3/4" | — |
| WF122112 | 4" | 1/2" x 2" x 1-1/2" | — |
| WF134 | 4" | 3/8" x 2" x 1-3/4" | — |
| WF211238 | 4" | 2" x 1-1/2" x 3/8" | — |
| WF121123 | 5" | 1/2" x 1-1/2" x 3" | — |
| WF121123-H | 5" | 1/2" x 1-1/2" x 3" | 26 Ga |
| WF121143 | 5" | 1/2" x 1-1/4" x 3" | 105° angle |
| WF122142-90 | 5" | 1/2" x 2-1/4" x 2" | 90° angle |
| WF122142-105 | 5" | 1/2" x 2-1/4" x 2" | 105° angle |
| WF212 | 5" | 1/2" x 2-1/2" x 2" | — |
| WF12212212 | 5-1/2" | 1/2" x 2-1/2" x 2-1/2" | — |
| WF122123-H | 6" | 1/2" x 2-1/2" x 3" | 26 Ga |
| WF122123-135-H | 6" | 1/2" x 2-1/2" x 3" | 135° angle, 26 Ga |
| WF411412 | 6" | 4" x 1-1/4" x 1/2" | — |
| WF12314212 | 6-1/2" | 1/2" x 3-1/4" x 2-1/2" | — |
| WF1233 | 6-1/2" | 1/2" x 3" x 3" | 90° angle |
| WF2312 | 6-1/2" | 2-1/2" x 3-1/2" x 1/2" | — |
| WF12258334-105 | 7" | 1/2" x 2-5/8" x 3-3/4" | 105° angle |
| WF33431412-105 | 7-1/2" | 1/2" x 3-1/4" x 3-3/4" | 105° angle |
| WF34126 | 7-1/2" | 3/4" x 1/2" x 6" | — |
| WF346 | 7-1/2" | 1/2" x 3/4" x 6" | — |
| WF126 | 8" | 1/2" x 1-1/2" x 6" | — |
| WF12334334-108 | 8" | 1/2" x 3-3/4" x 3-3/4" | 108° angle |
| WF122126 | 9" | 1/2" x 2-1/2" x 6" | — |
| WF3126 | 10" | 1/2" x 3-1/2" x 6" | — |
| WF3126-110 | 10" | 1/2" x 3-1/2" x 6" | 110° angle |
| WF3126-H | 10" | 1/2" x 3-1/2" x 6" | 26 Ga |
| WF641434-105 | 11" | 3/4" x 4-1/4" x 6" | 105° angle |
| WF51251212-135 | 11-1/2" | 1/2" x 5-1/2" x 5-1/2" | 135° angle |
| WF344147-108 | 12" | 3/4" x 4-1/4" x 7" | 108° angle |
| WF345345-105 | 12" | 3/4" x 5-3/4" x 5" | 105° angle |
| WF412712 | 12" | 4-1/2" x 7" x 1/2" | — |
| WF651212-105 | 12" | 1/2" x 5-1/2" x 6" | 105° angle |
All profiles are 10-foot lengths. Standard angle unless noted; angled profiles are formed to the degree shown for pitched sill and head conditions.
Product Documents
Technical Specifications
| Specification | Details |
|---|---|
| Product Type | Steel Window Flashing |
| Series | WF (Window Flashing) |
| Item IDs | 43 stocked profiles — see size table above |
| Stocked Material | Standard-gauge galvanized steel; 26 Ga on -H profiles |
| Shelf Slope | 5–7 degrees toward outside wall |
| Painted Color Options | Almond (AM), Brown (BR), Black (BK), Charcoal (CB), White (WH); other colors Special Order |
| Available Sizes | 3" to 12" girths, 43 profiles, all 10 ft lengths |
| Manufacturer | R.H. Tamlyn & Sons, Inc. |
| Country of Origin | Not specified — contact Tamlyn for details |
Frequently Asked Questions
Q: What is the shelf slope on the WF Series window flashing?
A: The horizontal shelf is sloped 5–7 degrees toward the outside wall to ensure positive drainage away from the building assembly.
Q: What material grades are available for the WF Series?
A: All WF profiles are stocked in standard-gauge galvanized steel. Select profiles are also stocked in heavier 26-gauge galvanized — these carry an -H suffix in the item ID (e.g., WF103-H). Painted finishes are available as special orders.
Q: Can I get the WF Series in a color to match my siding or trim?
A: Yes. Painted stock colors include Almond (AM), Brown (BR), Black (BK), Charcoal (CB), and White (WH). For other colors, specify as a Special Order when placing your order.
Q: Where can I find the full dimensional specifications for all WF series sizes?
A: The complete dimensional data for all WF series items — including A, B, and C measurements — is available in the WF Series Catalog Page PDF linked above.
Q: Is the WF Series suitable for use with fiber cement and vinyl siding systems?
A: Yes. The WF10 is compatible with a wide range of siding materials including fiber cement, vinyl, lap siding, and stucco systems where a window head flashing is required.
Q: How do I specify a painted finish when ordering?
A: When ordering, append the color code to the item ID — for example, specify WF10-AM for Almond or WF10-WH for White. Contact Tamlyn at 1-800-334-1676 for Special Order color inquiries.