Kickout Flashing for EIFS: Stop Roof Runoff Leaks

The Small Metal Detail That Prevents Big EIFS Roof-To-Wall Repairs

Water damage at roof-to-wall intersections is one of the most common, and most preventable, problems Indiana Wall Systems sees on EIFS homes throughout Central Indiana. The culprit is almost always the same: a missing or failed kickout flashing detail that allows thousands of gallons of roof runoff to travel behind the cladding each year.

This guide covers everything homeowners and property managers need to know about kickout flashing, from how it works and why it fails to the warning signs of hidden damage and what questions to ask before hiring a contractor.

Whether a home is in Carmel, Fishers, Indianapolis, or anywhere else in Hamilton, Marion, or the surrounding counties, understanding this critical flashing detail can mean the difference between a $500 fix and a $15,000 restoration project. For homeowners already noticing signs of water intrusion, Indiana Wall Systems offers EIFS water damage repair services backed by over 26 years of field experience.

Key Takeaways

• Missing or undersized kickout flashing ranks among the top causes of water damage at roof-to-wall intersections on EIFS homes across Central Indiana.
• A properly installed kickout diverter directs roof runoff away from the wall and into the gutter, preventing water from traveling behind the cladding.
• Homeowners should look for dark streaks below the roofline, soft spots in the EIFS lamina, and interior ceiling stains as warning signs of a hidden leak.
• Repair costs increase dramatically when rot spreads to wall sheathing, rim joists, and stud bays, often turning a $500 fix into a $15,000 or higher restoration project.
• Indiana Wall Systems provides professional EIFS inspections and repair services for homeowners throughout Hamilton, Marion, Hendricks, and Johnson counties.

What Is Kickout Flashing and Why Does It Matter for EIFS?

Every home with a sloped roof that terminates against a vertical wall has a critical weak point. At this roof-to-wall intersection, thousands of gallons of rainwater per year can concentrate at a single location. Without the right hardware in place, that water finds a path behind the wall cladding rather than into the gutter system.

A kickout flashing (also called a kickout diverter flashing or kick-out diverter) is a small, angled piece of metal or thermoplastic installed at the bottom of a step flashing sequence. Its job is simple: catch water running down the step flashing and redirect it out and away from the wall, directly into the gutter.

For homes clad in Exterior Insulation and Finish System (EIFS), this detail is especially important. Unlike brick or fiber cement siding, EIFS creates a continuous surface that can hide moisture damage for months or even years. By the time a homeowner notices interior staining or a musty odor near the intersection, the damage may have already spread to wall sheathing, studs, and insulation.

Indiana Wall Systems has repaired hundreds of roof-wall intersection leaks across Carmel, Fishers, Zionsville, Indianapolis, and the surrounding counties. In most cases, the root cause is the same: missing kickout flashing, improper kickout geometry, or a sealant-only repair that failed within a few seasons.

How Water Gets Behind EIFS at Roof-to-Wall Intersections

Understanding the roof-to-wall leak path helps homeowners and contractors identify problems early. Here is what happens when kickout flashing is missing or fails:

1. Rainwater hits the roof. The water flows down the shingles toward the gutter.
2. Step flashing channels the water. Each overlapping piece of step flashing should direct water outward, away from the wall.
3. Water reaches the bottom of the step flashing sequence. At this point, the water should exit into the gutter.
4. Without a kickout, water clings to the wall. Surface tension and capillary action allow water to follow the wall surface downward rather than dropping into the gutter.
5. Water enters behind the EIFS. If there is any gap at the termination, sealant failure, or crack in the lamina, water infiltrates the wall assembly.
6. Moisture accumulates in the wall cavity. Over time, water soaks into the EPS foam, wall sheathing, and framing.

This process repeats with every rain event. Even a light shower can push water behind the cladding when the kickout detail is missing or undersized.

Why EIFS Is Particularly Vulnerable

Traditional stucco and some other cladding types may show water staining quickly. EIFS, however, has an acrylic finish coat that repels surface moisture. While this is an advantage for everyday weather exposure, it also means that water intrusion behind the finish goes undetected longer.

Older barrier EIFS systems (common in the 1990s and early 2000s) lacked built-in drainage channels. Water that entered the system had no way to escape. Modern water-managed EIFS and drainage EIFS systems include a drainage plane and weep screed termination, but these features only work if the flashing details at the roofline are installed correctly.

Anatomy of a Proper Kickout Flashing Detail

A well-designed kickout flashing detail includes several components working together. Each piece must be sized correctly, positioned accurately, and integrated with the water-resistive barrier (WRB) behind the EIFS.

Step Flashing Sequence

Step flashing consists of individual L-shaped pieces of metal installed at each shingle course along a roof-to-wall intersection. Each piece overlaps the one below, creating a shingle-lap pattern that sheds water outward.

Key requirements for step flashing:

• Minimum 4-inch upturn against the wall
• Minimum 2-inch roof leg extending under the shingles
• Nailed in the upper portion only (never face-nailed through the exposed face)
• Overlapped by the WRB or self-adhered flashing membrane above

The Kickout Diverter

At the bottom of the step flashing sequence, a kickout diverter sits at an angle to direct water into the gutter. The critical dimensions include:

Dimension	Minimum Requirement
Kickout leg height	4 inches up the wall
Kickout outlet angle	45 to 60 degrees outward
Kickout throat opening	Wide enough to handle concentrated runoff
Kickout flange width	Overlaps gutter apron by at least 1 inch

A preformed kickout flashing (such as the RainTek Universal Kickout Flashing or similar thermoplastic diverter) makes proper geometry easier to achieve. Field-fabricated kickouts bent from sheet metal can work, but they require precise sheet metal brake fabrication and careful seaming.

Integration with the Water-Resistive Barrier

The kickout flashing must tie into the WRB layer behind the EIFS. This means:

• The WRB shingle-laps over the top of the step flashing
• Self-adhered flashing membrane or butyl flashing tape seals the transition
• No reverse lap condition exists (water should always flow over, not under, each layer)

If the WRB continuity breaks at the roofline, water can bypass the flashing entirely and enter the wall cavity.

EIFS Termination at the Roofline

Where the EIFS meets the roof, the system must terminate in a way that prevents water entry. Common termination methods include:

• Weep screed termination with a minimum clearance above the roof surface
• Starter track termination sealed to the step flashing
• EIFS backwrapping at edges to protect exposed foam

The reinforcing mesh termination and base coat termination detail must wrap around all exposed EPS edges. Any gap between the EIFS and the roof surface invites wind-driven rain intrusion.

Common Kickout Flashing Failures and Their Causes

Indiana Wall Systems encounters the same flashing problems again and again on homes throughout Central Indiana. Recognizing these failure modes helps homeowners catch issues before major damage occurs.

Missing Kickout Flashing

The most common problem is the simplest one: no kickout was ever installed. Many roofing crews skip this detail entirely, especially on re-roofing projects. The homeowner may not know to ask for it, and the roofer may not understand its importance for wall claddings like EIFS.

Improper Kickout Geometry

Even when a kickout is present, the angle or size may be wrong. An undersized kickout cannot handle concentrated runoff during heavy rain. A kickout with a reversed kickout direction actually funnels water toward the wall instead of away from it.

Step Flashing Too Short

When step flashing pieces have less than the required 4-inch upturn, water can overtop the flashing during wind-driven rain events. This is especially common on homes in Hendricks County and Boone County, where open terrain increases wind exposure.

Face-Nailed Flashing

Nails or screws driven through the exposed face of step flashing create exposed fastener leak points. Every penetration is a potential water entry point. Proper installation uses concealed fasteners in the upper portion of each flashing piece.

Sealant-Only Repairs

Some contractors attempt to solve roof-wall leaks with caulk alone. While a bead of polyurethane sealant or SMP hybrid sealant can temporarily slow water entry, sealant joint movement from thermal expansion eventually breaks the bond. A sealant-only flashing repair typically fails within 2 to 5 years.

Gutter-Related Problems

The kickout must direct water into a functional gutter system. Common gutter issues that contribute to kickout failures include:

• Gutter splash-over when the gutter is too small or clogged
• Gutter backflow caused by improper slope
• Gutter end cap leak at the termination point
• Downspout capacity issue that causes overflow during heavy rain

If the gutter cannot accept the water the kickout delivers, the water backs up and finds its way behind the EIFS.

Signs of Kickout Flashing Failure on an EIFS Home

Homeowners should watch for these warning signs that indicate a roof-to-wall leak path may exist.

Exterior Warning Signs

• Dark streaks below the roof eave where the roof meets the wall
• Algae growth at runoff path indicating persistent moisture
• Efflorescence on EIFS (white mineral deposits on the surface)
• Lamina crack at corner where the roof and wall meet
• Soft EIFS feel near leak when pressing on the wall surface

Interior Warning Signs

• Interior staining at ceiling line in rooms below the roof-wall intersection
• Paint bubbling on interior wall near the affected area
• Musty odor near intersection suggesting mold in the wall cavity
• Wet insulation in wall cavity visible during any opening of the wall

Diagnostic Tools

Professional inspectors use several methods to confirm moisture intrusion:

Diagnostic Method	What It Reveals
Probe test for EIFS moisture	Direct measurement of substrate moisture content
Pin-type moisture meter	Readings at specific wall locations
Non-invasive moisture scan	General moisture mapping without penetration
Infrared thermography inspection	Temperature differences indicating wet areas
Borescope wall cavity check	Visual inspection inside the wall
Water test protocol (spray rack or hose test)	Leak location under controlled conditions

Indiana Wall Systems offers EIFS moisture inspections using these diagnostic tools to identify the full extent of water damage before recommending repairs.

The True Cost of Ignoring Kickout Flashing Problems

A missing or failed kickout flashing can cause damage that far exceeds the cost of proper installation. Here is how repair costs escalate over time:

Stage 1: Early Detection (Repair Cost: $500 to $1,500)

If caught within the first year or two, the damage may be limited to:

• Minor moisture in the EPS foam
• Small area of base coat saturation
• No structural damage

At this stage, the repair involves removing a small section of EIFS, drying the substrate, replacing any damaged foam, and reinstalling the cladding with a proper kickout detail.

Stage 2: Moderate Damage (Repair Cost: $3,000 to $8,000)

After several years of water intrusion:

• Wall sheathing rot begins
• Mold growth starts in the wall cavity
• Larger area of EIFS requires removal
• WRB replacement at opening is necessary

The substrate replacement scope expands, and the project requires coordination between roofing and EIFS contractors.

Stage 3: Severe Damage (Repair Cost: $10,000 to $25,000+)

When the leak continues unaddressed:

• Rim joist rot at leak compromises structural framing
• Stud bay moisture requires multiple stud repairs or replacement
• Wet insulation in wall cavity must be completely removed
• Full EIFS removal at roof-wall intersection and beyond
• Possible roof replacement coordination timing

At this stage, the project becomes a remediation scope definition effort, often involving selective demolition, mold remediation, structural repairs, and complete EIFS restoration.

Real-World Cost Factors

Several factors affect repair costs for Central Indiana homeowners:

• Access scaffolding needs for multi-story homes
• EIFS finish matching after repair (texture and color matching)
• Siding removal and reinstallation if other claddings are present
• Roof replacement coordination if shingles must come off to install flashing properly
• Final water test after repair to verify the fix

Kickout Flashing Retrofit Options

Many Central Indiana homes were built or reroofed without proper kickout flashing. The good news: retrofitting a kickout is possible, though the approach depends on the home’s construction.

Retrofit Without Siding Removal

In some cases, a kickout can be installed with minimal disturbance:

1. Lift the bottom shingle courses at the roof-wall intersection
2. Slide the kickout diverter under the existing step flashing
3. Seal the kickout to the step flashing with compatible sealant
4. Extend the kickout into the gutter
5. Re-secure the shingles

This approach works best when:

• The existing step flashing has adequate wall upturn
• The EIFS termination is in good condition
• No water damage has occurred yet

Retrofit with Siding Removal

When the existing flashing is inadequate or damage has already occurred, a more extensive retrofit is required:

1. Remove EIFS in the affected area
2. Inspect and repair any damaged sheathing or framing
3. Install new self-adhered flashing membrane or liquid-applied WRB
4. Install proper step flashing with correct overlap
5. Install preformed kickout flashing at the bottom
6. Reinstall EIFS with proper edge wrapping and termination

Retrofit with EIFS Removal

For homes with significant water damage or older barrier EIFS systems, a full drainage mat installation and system upgrade may be the best long-term approach. This allows the contractor to:

• Add a proper drainage plane behind the new EIFS
• Install a rainscreen gap for improved drying
• Correct any other flashing deficiencies at windows, doors, and transitions

Indiana Wall Systems has performed hundreds of kickout flashing retrofits throughout Fishers, Zionsville, and other Hamilton County communities. The team evaluates each situation to recommend the most cost-effective approach.

Kickout Flashing for Chimney Sidewalls

Chimneys present a special challenge for roof-to-wall flashing. Many of the same principles apply, but the geometry is more complex.

Chimney Sidewall Flashing Components

A properly flashed chimney includes:

• Chimney step flashing along each sloped side
• Chimney apron flashing (also called chimney base flashing) at the lower front
• Chimney headwall flashing at the upper rear
• Chimney counterflashing (reglet cut or surface-mounted) covering the step flashing upturn
• Chimney cricket or saddle behind wide chimneys to divert water around the obstruction

Kickout Flashing at Chimney Eave

Where the chimney sidewall step flashing reaches the eave, a kickout diverter should direct water into the gutter. This detail is frequently missed, leading to the same water concentration at chimney problems seen at other roof-wall intersections.

Signs of chimney flashing failure include:

• Staining at chimney chase interior
• Chimney crown cracks allowing water entry from above
• Masonry chimney mortar joint deterioration
• Chimney brick spalling from freeze-thaw cycles
• Chimney efflorescence on the masonry or surrounding EIFS

Chimney in Roof Valley Risk

A chimney in roof valley location creates an especially difficult water management situation. Two roof planes direct concentrated runoff toward the chimney, and the valley flashing must tie into the chimney flashing without creating gaps.

For EIFS homes with chimneys, Indiana Wall Systems recommends a full chimney flashing inspection at least every 3 years, and always after any roof work.

Flashing Materials: What Works Best with EIFS

The flashing material must be compatible with both the roofing system and the EIFS cladding. Here are the common options:

Aluminum Flashing

Pros: Lightweight, corrosion-resistant, easy to bend and form
Cons: Galvanic corrosion risk when in contact with dissimilar metals; cannot be soldered
Best for: Most residential applications where galvanic contact can be avoided

Galvanized Steel Flashing

Pros: Strong, readily available, can be soldered for watertight seams
Cons: Will rust if the galvanized coating is scratched; heavier than aluminum
Best for: Applications requiring soldered seams or high strength

Stainless Steel Flashing

Pros: Excellent corrosion resistance, long lifespan, compatible with most materials
Cons: Higher cost, harder to form in the field
Best for: High-end installations or areas with salt exposure

Copper Flashing Restrictions

Copper is a premium flashing material, but it has a significant limitation for EIFS: runoff from copper can stain light-colored finishes. Additionally, copper flashing restrictions exist in some building codes due to environmental concerns.

PVC and Thermoplastic Kickout Diverters

Preformed PVC kickout diverter and UV-resistant thermoplastic diverter products are popular because they:

• Eliminate galvanic corrosion concerns
• Provide consistent geometry every time
• Install quickly without special metalworking skills
• Resist ice damming and wind-driven rain

Sealant Compatibility

Whatever flashing material is used, the sealants must be compatible. Key considerations:

Sealant Type	Compatible Materials	Notes
Polyurethane sealant	Most metals, EIFS, WRB	Good adhesion, requires primer on some surfaces
Neutral-cure silicone sealant	Metals, EIFS, most plastics	Will not corrode metals; some not paintable
SMP hybrid sealant	Metals, EIFS, WRB, most substrates	Combines benefits of silicone and polyurethane

Always verify sealant compatibility with EIFS and sealant compatibility with metal before application. Some sealants require a primer for sealant adhesion on certain surfaces.

Building Code Requirements for Kickout Flashing

Kickout flashing is not just a best practice. It is a code requirement in most jurisdictions.

International Residential Code (IRC)

The IRC roof flashing requirements specify that roof-to-wall intersections must be flashed to prevent water intrusion. The 2018 IRC and later editions explicitly require kickout flashing at the termination of step flashing where the roof meets a sidewall.

International Building Code (IBC)

For commercial structures and larger multifamily buildings, the IBC flashing requirements similarly mandate proper flashing at all roof-wall intersections.

ASTM Standards

Several ASTM standards provide guidance on flashing installation:

• ASTM E2112 covers flashing practice for exterior wall openings and transitions
• ASTM C1063 addresses lath and accessories for stucco systems (relevant context for traditional stucco comparisons)
• ASTM C926 covers stucco application standards

EIFS Industry Standards

The EIFS Industry Members Association (EIMA) publishes detailed guides for EIFS installation, including termination and flashing requirements. Manufacturer detail sheets from Sto, Dryvit, Senergy, and other major EIFS brands show specific kickout flashing configurations.

When hiring a contractor, homeowners should ask whether the proposed work meets current code requirements. Indiana Wall Systems follows all applicable codes and manufacturer specifications for every EIFS repair project in Central Indiana.

Questions to Ask Your Contractor About Kickout Flashing

Before hiring a contractor for roof-wall flashing work, homeowners should ask these questions:

About the Scope of Work

1. Will a kickout flashing be installed at every roof-wall intersection?
2. What material will the kickout be made from?
3. Will the step flashing be replaced or will the new kickout work with existing flashing?
4. How will the kickout be sealed to the gutter system?

About EIFS-Specific Concerns

1. How will the EIFS termination be protected during the work?
2. Will the WRB be inspected and repaired if needed?
3. What sealant will be used, and is it compatible with EIFS?
4. Will the reinforcing mesh and base coat be properly terminated?

About Coordination

1. Is a roofing contractor or an EIFS contractor performing the work?
2. Who is responsible for the kickout flashing installation?
3. Will a final water test be performed after the repair?

About Warranties

1. What warranty covers the kickout flashing installation?
2. Are there any roofing warranty exclusions related to wall flashing?
3. Does the water intrusion exclusion language in any warranty affect this work?

Who Installs Kickout Flashing: Roofing vs. EIFS Contractors

One source of confusion (and finger-pointing when problems arise) is who installs kickout flashing. The answer depends on the project:

New Construction

On new homes, the sequence typically works like this:

1. Roofer installs step flashing and kickout as the roof goes on
2. EIFS contractor installs the water-resistive barrier, overlapping the step flashing
3. EIFS contractor terminates the system above the roofline

When coordination breaks down, the kickout may be omitted because each trade assumed the other would handle it.

Re-Roofing Projects

When a roof is replaced, the roofing contractor should install new step flashing and a kickout. However, many roofers skip this step, especially if the existing EIFS appears intact.

EIFS Repair Projects

If the EIFS is being repaired due to water damage at a roof-wall intersection, the EIFS contractor may need to:

• Remove the damaged cladding
• Coordinate with a roofer to correct the flashing
• Reinstall the EIFS with proper termination

Indiana Wall Systems handles many projects that require roofing contractor coordination and stucco contractor coordination to ensure all components work together.

Maintenance Inspection Checklist for Roof-Wall Intersections

Homeowners can catch kickout flashing problems early by including this area in their regular maintenance routine.

Annual Roof-Wall Check

At least once per year (spring is ideal for Central Indiana), inspect the following:

• [ ] Kickout flashing present and correctly angled into gutter
• [ ] No visible gaps between step flashing and wall
• [ ] Gutter clear of debris at the kickout location
• [ ] No dark staining on EIFS below the roofline
• [ ] No cracks in EIFS finish near the intersection
• [ ] Sealant joints intact, not cracked or peeling

After-Storm Inspection

After severe weather (high winds, hail, heavy rain, or ice storms), check:

• [ ] Shingles intact at the roof-wall intersection
• [ ] No lifted or damaged step flashing
• [ ] Kickout still in place and not dislodged
• [ ] Gutter not damaged or pulled away from fascia
• [ ] No new water staining on interior ceilings or walls

Home Inspection Red Flag

If buying a home with EIFS, the home inspection red flag at roof-wall intersections should prompt further investigation. A general home inspector may note the absence of kickout flashing, but a specialized EIFS moisture inspection (sometimes called a buyer due diligence EIFS moisture test) provides more detailed information.

Sellers should be aware of real estate disclosure water intrusion requirements. Known water damage at roof-wall intersections must typically be disclosed to buyers.

Central Indiana Climate Considerations

The weather in Central Indiana creates specific challenges for roof-wall flashing details.

Freeze-Thaw Cycles

Indiana winters bring repeated freeze-thaw cycles. Water that enters behind the EIFS can freeze, expanding and causing freeze-thaw damage at lamina. The acrylic finish coat may crack, allowing more water to enter, accelerating the damage cycle.

Ice Dam Back-Up

When snow accumulates on the roof and melts from below (due to heat loss through the attic), it can refreeze at the cold roof edge. This ice dam back-up forces water upward under the shingles and potentially behind the wall flashing.

Homes in Carmel, Fishers, Westfield, Noblesville, and other northern suburbs of Indianapolis are particularly susceptible because many have complex rooflines with multiple roof-wall intersections.

Wind-Driven Rain

Summer thunderstorms in Indiana often bring horizontal rain. Wind-driven rain intrusion can push water into gaps that would stay dry during a gentle, vertical rainfall. Proper kickout geometry and sealed terminations are critical to resist these conditions.

Snow Melt Runoff Concentration

A single roof-wall intersection may receive the runoff from 500 to 1,000 square feet of roof surface. During rapid snowmelt, this snow melt runoff concentration can overwhelm a poorly designed or undersized kickout.

Frequently Asked Questions

What is kickout flashing?

Kickout flashing (also called a kickout diverter or kick-out flashing) is a small angled piece of metal or plastic installed at the bottom of step flashing where a roof meets a wall. It redirects rainwater and snowmelt away from the wall and into the gutter system, preventing water from traveling behind the siding or EIFS.

Why is kickout flashing especially important for EIFS homes?

EIFS has a continuous acrylic finish that can hide water damage for months or years. Unlike other claddings that show staining quickly, moisture behind EIFS may rot sheathing, framing, and insulation before any visible signs appear. Proper kickout flashing prevents water entry at this high-risk location.

How can I tell if my home is missing kickout flashing?

Stand at ground level and look at the bottom of any roof-wall intersection. You should see a small angled piece directing water into the gutter. If the step flashing simply stops at the gutter line without a visible diverter, kickout flashing is likely missing. Dark streaks on the wall below the roofline also suggest water is bypassing the gutter.

Can kickout flashing be added to an existing home?

Yes. A kickout can often be retrofitted by lifting shingles and sliding the diverter under the existing step flashing. More extensive work may be needed if the existing flashing is inadequate or water damage has already occurred. An experienced EIFS contractor can evaluate the best approach.

Who is responsible for installing kickout flashing?

On new construction, the roofing contractor typically installs the kickout as part of the step flashing sequence. On re-roofing projects, the roofer should include it. During EIFS repairs involving roof-wall intersections, coordination between the roofing and EIFS contractors ensures the detail is completed correctly.

How much does it cost to add or repair kickout flashing?

Costs vary widely based on accessibility, existing conditions, and whether water damage has occurred. A simple retrofit on an accessible one-story home might cost $300 to $600. If EIFS removal, sheathing repair, and system reinstallation are needed, costs can reach $5,000 to $15,000 or more.

Is kickout flashing required by building codes?

Yes. The International Residential Code (IRC) requires kickout flashing at the termination of step flashing where a roof meets a sidewall. Many local jurisdictions in Indiana have adopted these requirements. Proper installation should also meet EIFS manufacturer specifications.

How often should I inspect my roof-wall intersections?

Indiana Wall Systems recommends an annual visual inspection in the spring, plus additional checks after severe storms. Look for staining, cracks, loose flashing, and sealant failure. Every 3 to 5 years, consider a professional EIFS moisture inspection for a more thorough evaluation.

When to Call Indiana Wall Systems

Homeowners across Indianapolis, Greenwood, Plainfield, Avon, and the surrounding Central Indiana communities trust Indiana Wall Systems for EIFS inspection and repair services.

Consider scheduling an evaluation if you notice:

• Staining or discoloration on interior walls or ceilings near rooflines
• Soft or spongy areas when pressing on EIFS near a roof-wall intersection
• Visible cracks in the EIFS finish near where the roof meets the wall
• Missing or damaged kickout flashing visible from the ground
• A musty smell in rooms below a roof-wall intersection

The Indiana Wall Systems team, led by Jeff Johnson with over 26 years of experience in the EIFS industry, provides honest assessments and repair recommendations based on what the building actually needs, not on upselling unnecessary work.

To schedule an inspection or request a repair estimate, call (765) 341-6020 or visit the contact page.

Step-by-Step: Proper Kickout Flashing Installation for EIFS

For contractors and hands-on homeowners who want to understand what proper installation looks like, this section breaks down the correct sequence for installing kickout flashing at an EIFS roof-wall intersection.

Step 1: Prepare the Substrate

Before any flashing goes on, the wall substrate must be ready:

• Wall sheathing should be dry, with substrate moisture content below 19% for wood-based sheathings
• Any damaged or rotted sheathing must be replaced
• The water-resistive barrier (WRB) must be properly lapped according to the shingle-lap principle

Step 2: Install the Starter Step Flashing

The first course step flashing (also called the starter step flashing) sits at the lowest point of the roof-wall intersection:

1. Position the L-shaped flashing with the roof leg extending under the first full shingle
2. The wall leg should extend at least 4 inches up the wall
3. Fasten in the upper portion only, in the nailing zone restrictions area where the next course will cover
4. Never use face-nailed flashing on the exposed portion

Step 3: Continue the Step Flashing Sequence

Each subsequent piece of step flashing overlaps the one below:

• Maintain at least 2 inches of overlap at each course
• Follow the shingle course overlap pattern, with each flashing piece sitting at the shingle butt line
• Use concealed fastener method placement for all pieces
• Avoid overdriven fasteners that can dimple or crack the metal

Step 4: Install the Kickout Diverter

At the bottom of the sequence, the kickout goes in last:

1. Slide the kickout diverter under the starter step flashing
2. Position the kickout outlet angle at 45 to 60 degrees, pointing into the gutter
3. Ensure the kickout leg height matches or exceeds the step flashing upturn
4. Verify gutter entry alignment so water flows cleanly into the gutter trough
5. Seal the lap joint between the kickout and step flashing with a lap joint sealant bead of compatible sealant

Step 5: Integrate with the Water-Resistive Barrier

The WRB must tie into the flashing system properly:

• Apply self-adhered flashing membrane or peel-and-stick flashing over the step flashing wall legs
• Ensure the WRB shingle-laps over this membrane, creating a continuous barrier
• Check for any reverse lap condition that could allow water behind the barrier
• At roof terminations, the WRB or liquid-applied flashing should extend onto the roof surface far enough for the underlayment to cover

Step 6: Install Roof Underlayment

The roof underlayment ties the system together:

• Ice and water shield at wall is required in cold climates like Indiana
• The underlayment turned up wall should extend at least 4 inches above the roof surface
• This layer must be under the WRB/flashing membrane for proper drainage plane continuity

Step 7: Terminate the EIFS System

Finally, the EIFS terminates above the roofline:

• Install starter track termination or weep screed termination above the roof surface
• Maintain weep screed clearance to roof of at least 2 inches (some manufacturers require more)
• Complete EIFS edge wrapping detail to protect all exposed EPS foam
• Embed reinforcing mesh termination fully in the base coat
• Allow proper cure time before applying finish coat

Sealant Selection and Application at Kickout Locations

The joints between flashing components, EIFS, and other materials require sealants that can handle thermal movement while maintaining a watertight seal.

Understanding Sealant Joint Movement

Metal flashing expands and contracts with temperature changes. A 10-foot run of aluminum step flashing can move by 1/8 inch or more between summer and winter extremes. This thermal expansion at flashing puts stress on sealant joints.

Sealant joints that fail are among the most common causes of water intrusion at roof-wall intersections after the kickout itself is properly installed.

The Two-Sided Adhesion Rule

Proper sealant joints follow the two-sided adhesion rule: the sealant should bond to only two surfaces (the two sides of the joint), not three. When sealant bonds to three surfaces (three-sided adhesion), it cannot stretch properly and tears or pulls away.

To prevent three-sided adhesion:

• Use backer rod sizing appropriate for the joint width (typically backer rod diameter should be 25% larger than the joint width)
• For shallow joints, use bond breaker tape on the back of the joint
• Never fill a joint completely with sealant

Sealant Types for EIFS and Metal Flashing

Sealant Type	Movement Capability	Notes for EIFS Applications
Polyurethane sealant	±25% to ±50%	Good adhesion to EIFS and most metals; UV stability varies by product
Neutral-cure silicone sealant	±25% to ±50%	Will not corrode metals; excellent UV resistance; some not paintable
SMP hybrid sealant	±25% to ±35%	Combines benefits of both; good for painted applications

Surface Preparation

Before applying any sealant:

1. Cleaning metal before sealant: Remove oil, dirt, oxidation, and old sealant residue
2. Apply primer for sealant adhesion if required by the sealant manufacturer
3. Ensure surfaces are dry (no dew, rain, or condensation)
4. Verify sealant compatibility with EIFS finish coat material

Common Sealant Failures

Signs that a sealant joint has failed include:

• Sealant adhesion failure: Sealant pulls away from one or both surfaces
• Cohesive failure: Sealant tears through the middle
• Hardening or cracking: Loss of flexibility over time
• Caulk failure at roof-wall: Visible gaps or openings at joints

When sealant fails, water enters. A single failed joint at a kickout location can undo all the benefits of proper flashing installation.

Drainage EIFS vs. Barrier EIFS: Why the System Type Matters

The type of EIFS system on a home affects both the risk of damage from kickout flashing failures and the repair approach.

Barrier EIFS (1990s Systems)

Barrier EIFS systems were designed as “face-sealed” assemblies. The acrylic finish coat was intended to be the only line of defense against water. These systems:

• Have no drainage plane behind the foam
• Trap any water that enters the wall cavity
• Were common on homes built before 2000
• Are associated with the EIFS moisture problems that led to class-action lawsuits

On a barrier EIFS home, a kickout flashing failure allows water to accumulate with no escape path. Damage progresses faster and spreads further than on modern systems.

Water-Managed EIFS (Modern Systems)

Water-managed EIFS and drainage EIFS systems include:

• A drainage plane (grooved EPS foam or a drainage mat) behind the insulation
• Weep holes function at the base of the wall to allow water to exit
• A secondary water-resistive barrier behind the drainage plane

These systems can tolerate small amounts of incidental moisture. However, they are not designed to handle the concentrated runoff from a missing kickout. Even a water-managed system will eventually fail if subjected to continuous water entry at a roof-wall intersection.

Identifying the System Type

Homeowners can sometimes identify their system type by looking at the wall base:

• Visible weep screed with small openings: Likely a water-managed system
• EIFS extending to grade with no visible termination: May be barrier EIFS
• Termination bar or starter track termination visible: Suggests a properly detailed system

For definitive identification, a professional inspection is recommended. Indiana Wall Systems can identify the system type and recommend appropriate repairs or upgrades.

Roofing Systems and Kickout Flashing Compatibility

Different roofing materials present different flashing challenges. The kickout detail must be adapted to work with the specific roof type.

Asphalt Shingle Sidewall Flashing

Asphalt shingles are the most common roofing material in Central Indiana. Standard step flashing and kickout details work well with this roofing type. Key considerations:

• Step flashing must extend under each shingle course
• Flashing pieces should be at least the same height as the shingle exposure plus 2 inches
• Shingle course overlap should conceal all fasteners

Standing Seam Metal Roof Sidewall

Metal roofing requires a different approach:

• Step flashing typically runs continuously rather than in individual pieces
• The standing seams must be integrated with the sidewall flashing
• Soldered seam (metal) or sealed seam (metal) connections may be required
• Thermal movement is more significant and must be accommodated

Tile Roof Sidewall Flashing

Clay and concrete tile roofs present unique challenges:

• Heavier flashing materials may be required
• The profile of the tile affects how water reaches the sidewall
• Counter flashing must follow the tile profile
• Professional installation is strongly recommended

Slate Roof Sidewall Flashing

Slate roofing has the longest lifespan of any roofing material, so flashing must match:

• Copper or stainless steel flashing is typical
• Custom fabrication is often required
• The kickout must be durable enough to last the life of the slate

Flat and Low-Slope Roofs

Where a flat or low-slope roof meets an EIFS wall:

• Different flashing approaches apply (through-wall flashing, cap flashing, counterflashing)
• TPO roof membrane interface or EPDM roof membrane interface requires compatible adhesives and flashings
• Modified bitumen roof interface may allow torch-applied flashing

Special Situations: Dormers, Valleys, and Multiple Roof Pitches

Complex roof geometry creates multiple opportunities for water management failures.

Dormer Roof-Wall Intersection

Dormers create small roof-wall intersections on each side. Each side needs:

• Its own step flashing sequence
• A kickout diverter at the bottom of each sequence
• Proper integration with the main roof flashing

Many homes in the Village of West Clay and other upscale Carmel neighborhoods feature multiple dormers, increasing the number of critical flashing details.

Valley Discharge Toward Wall

When a roof valley directs water toward a wall, the valley flashing tie-in must be carefully detailed. The concentrated runoff from a valley can overwhelm a standard kickout.

Options include:

• Oversized kickout diverter to handle higher flow rates
• Cricket diverter (comparison) installed upstream to redirect water
• Extended gutter capacity at the valley termination

Multiple Roof Pitches at Wall

Some homes have roof planes with different pitches meeting at a single wall. Each pitch change creates a transition that must be flashed correctly. The roof pitch change at wall area is a frequent leak source because:

• Different shingle exposures create different step flashing requirements
• Water flow rates and angles vary between pitches
• Flashing transitions are difficult to execute cleanly

Rake Edge Runoff Control

At gable ends, water running down the rake edge can concentrate at a single point. Rake edge runoff control may require:

• Extended drip edge metal
• Hemmed drip edge to prevent capillary wicking
• Additional kickout where the rake meets a lower roof or wall

Permit and Inspection Considerations

Kickout flashing installation may trigger permit requirements, and the work should pass inspection.

Permit Inspection Triggers

In most Central Indiana jurisdictions, permits are required for:

• New roof installation
• Siding or cladding replacement
• Significant exterior repairs

A simple kickout retrofit on an existing home may not require a permit, but larger EIFS repair projects typically do. Check with the local building department.

What Inspectors Look For

Building inspectors reviewing roof-wall flashing details will check:

• Kickout present at each step flashing termination
• Proper geometry (angle, height, gutter alignment)
• Correct material and fastener selection
• Integration with the wall WRB
• Proper EIFS termination

Documentation for Future Reference

Homeowners should keep records of flashing work, including:

• Photos of the flashing before, during, and after installation
• Manufacturer specifications for the kickout diverter used
• Contractor contact information and warranty documentation
• Inspection approval (if applicable)

This documentation helps with future repairs, insurance claims, and real estate transactions.

Insurance and Real Estate Implications

Kickout flashing problems can affect both insurance coverage and property transactions.

Home Insurance Considerations

Standard homeowner’s insurance policies may cover water damage from a sudden event (like a storm that damages flashing), but they typically exclude:

• Gradual water intrusion from long-term flashing defects
• Damage caused by lack of maintenance
• Mold remediation beyond certain limits

Homeowners with EIFS should review their policies for water intrusion exclusion language and consider endorsements that provide broader coverage.

Real Estate Transactions

When selling an EIFS home:

• Real estate disclosure water intrusion rules require sellers to disclose known water problems
• Buyers may request a specialized EIFS inspection as part of due diligence
• Missing kickout flashing can be a negotiating point or deal-breaker
• Buyer due diligence EIFS moisture test results may reveal hidden damage

When buying an EIFS home:

• Request documentation of any previous flashing repairs
• Have all roof-wall intersections inspected
• Budget for kickout installation if none exists
• Factor potential repairs into the purchase price

Summary: Protecting Your EIFS Home from Roof Runoff Damage

Kickout flashing is a small component with a big job. When properly installed and maintained, it protects EIFS homes from one of the most common sources of hidden water damage.

Key points to remember:

• Every roof-wall intersection needs a kickout diverter at the bottom of the step flashing sequence.
• The kickout must have the correct angle, size, and gutter alignment to handle concentrated roof runoff.
• EIFS terminations at the roofline require proper backwrapping, sealing, and integration with the water-resistive barrier.
• Regular inspections and prompt repairs prevent small problems from becoming major restoration projects.
• When hiring contractors, clarify who is responsible for kickout flashing installation and verify that work meets code requirements.

Central Indiana homeowners who take these precautions can expect their EIFS cladding to perform well for decades. Those who ignore the roof-to-wall leak path risk discovering $15,000 or more in hidden damage when the water finally makes itself visible inside the home.

For questions about kickout flashing, EIFS inspections, or water damage repair, contact Indiana Wall Systems at (765) 341-6020. Serving Hamilton County, Marion County, Hendricks County, Johnson County, Boone County, Morgan County, and all of Central Indiana.