Custom Metal Flashing for Stucco Walls - Portland, OR
Kickout flashing, sill pans, weep screed, expansion joint caps, and transition flashings for stucco and EIFS assemblies. Precision-fabricated for stucco contractors within 100 miles of Portland, OR.
Custom Metal Flashing for Stucco Walls - Portland, OR
Stucco and EIFS (Exterior Insulation and Finish Systems) assemblies have unique flashing requirements compared to other cladding systems. The stucco itself is a continuous coating. It relies on properly integrated flashings at all transitions, penetrations, and terminations to maintain a watertight envelope. When stucco flashing is incorrect, water infiltrates behind the stucco and has no way to drain out. This leads to trapped moisture, mold, and structural damage that's extremely expensive to remediate.
PDX Panels fabricates precision sheet metal flashings specifically for stucco and EIFS applications, serving stucco contractors and siding contractors throughout Portland, OR and the Pacific Northwest.
Stucco Flashing Types We Fabricate
Kickout Flashing for Stucco: The most critical detail for stucco walls adjacent to a sloped roof. Kickout flashing (diverter flashing) redirects roof runoff away from the stucco at the roof-to-wall intersection. Missing or improperly formed kickout flashing is one of the top causes of stucco moisture claims. We fabricate to match the specific roof angle, gutter profile, and wall geometry of your project.
Window and Door Flashings: Head, sill, and jamb flashings for penetrations in stucco walls. Sill pans with positive drainage slope and end dams are essential in stucco. Water that puddles at the sill will eventually find the wall assembly.
Weep Screed: The metal screed at the base of the stucco wall that terminates the stucco, provides a weep channel for drainage, and creates a positive separation from the substrate below. Available in standard gauges and with extended screed faces for continuous insulation assemblies.
Expansion and Control Joint Caps: Sheet metal caps for expansion joints in stucco walls that allow movement without cracking the stucco or breaking the waterproofing.
Transition Flashings: Where stucco meets other cladding materials, including wood siding, fiber cement panels, and metal panels, a transition flashing is required to bridge the gap and direct water out. We fabricate custom transition profiles for virtually any combination of materials.
EIFS-Specific Flashings: EIFS assemblies have specific perimeter flashing requirements. Typically a base track or J-bead at the bottom of the system, and specific head and sill flashings at openings. We fabricate per the EIFS manufacturer's details.
Materials for Stucco Flashing
Galvanized steel (24-gauge G-90 or heavier) is the standard for most stucco flashing applications. It's compatible with stucco materials, holds bends precisely, and provides adequate service life when properly installed.
Aluminum is used where galvanic compatibility is a concern or where long-term corrosion resistance in a coastal or chemical environment is needed. Aluminum is not compatible with wet concrete. Use a separation layer where aluminum flashings contact fresh stucco.
Copper is occasionally specified for stucco applications in high-end residential or historic restoration work. Be aware that copper runoff can discolor white stucco finishes.
For EIFS applications, galvanized steel coated with G-90 galvanizing or aluminum are both acceptable. Check with your EIFS manufacturer for specific requirements.
The Building Code and Stucco Flashings
Oregon and Washington both follow the International Building Code (IBC) and International Residential Code (IRC) flashing requirements for stucco assemblies. The Pacific Northwest's high rainfall levels make proper flashing even more critical than in drier climates. The volume and duration of driving rain here puts enormous pressure on any weak points in the building envelope.
For stucco contractors, the key compliance issues are: kickout flashing at all roof-to-wall intersections, positive-draining sill pans at all window and door openings, weep screed at the base of all exterior stucco, and properly overlapped and sealed transitions at all material changes.
We fabricate to these requirements and can work with your project's specific details to ensure your stucco flashing package is code-compliant.
Frequently Asked Questions
Why does stucco need specific flashings compared to other cladding?
Stucco is a continuous, non-drainable cladding. Water that gets behind it has no easy way out. This means all transitions need to be precisely flashed and sealed. Unlike siding with drainage planes, stucco depends entirely on correct perimeter flashings to stay watertight.
What is the most common stucco flashing failure?
Kickout flashing at roof-to-wall intersections is the #1 failure point for stucco moisture claims. When this detail is missing or incorrect, roof runoff drives directly into the stucco at the roofline. We fabricate custom kickout flashing for every roof geometry.
Do you fabricate weep screed?
Yes. Weep screed is one of our standard items. We fabricate in standard profiles (1" to 1.5" screed face) and can extend the face height for continuous insulation applications where the stucco base is higher off the substrate.
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