Boral Flashing Replacement Nationwide

Boral Flashing Replacement: The Orange County Owner’s Guide

Boral flashing replacement in Orange County typically runs $18 to $42 per linear foot installed, depending on the flashing profile, roof pitch, and whether we’re replacing step flashing, counter flashing, or both. We stock Boral-compatible flashing on our trucks and can usually complete most flashing replacements in a single visit. Most Orange County homeowners discover a flashing failure the hard way: a water stain on the ceiling, a damp patch in the attic, or paint bubbling on an exterior wall three feet below the roofline.

Call (559) 258-5703

The flashing is the metal seam that keeps water out where your Boral roof meets a wall, chimney, skylight, or valley. When it fails, water gets in quietly for months before you see the damage inside. By the time you spot the stain, the flashing has usually been compromised for a while. Here’s what you need to know to fix it right in Orange County, where we get eighteen inches of rain a year and a lot of marine-layer moisture along the coast.

Which Boral Models This Applies To

Boral’s concrete and clay tile roof systems all use the same fundamental flashing strategy, but the profile matters. We work with Boral’s flat shake, barrel tile, and slate profiles across their standard and lightweight concrete lines. The flashing profile for a Boral flat tile is different from what a barrel tile requires: the flat profile needs a lower kick angle at the wall junction, while barrel tiles demand taller step flashing increments to match the tile’s radius.

Here’s the compatibility gotcha most Orange County homeowners run into: Boral’s lightweight concrete tiles (the L-Series) sit slightly lower than their standard-weight equivalents, which means the flashing reveal below the tile edge changes by roughly three-eighths of an inch. A flashing cut for a standard Boral tile will show a gap or bind under an L-Series tile. If you don’t know which Boral product is on your roof, check the tile’s underside for a stamp or check your original building permit documents. We identify the exact profile and series during our estimate, before any metal gets ordered.

On the OEM-versus-aftermarket question: Boral doesn’t manufacture flashing themselves. Their flashing is sourced from regional metal fabricators. That means there’s no such thing as “Boral-branded” flashing. What matters is the gauge, material, and profile match. We use 26-gauge galvanized steel or 16-ounce copper depending on the application and budget. Both outlast the box-store aluminum flashing you’ll find at big-box retailers, which is too thin for tile work and fails years early along Orange County’s coast where salt air eats cheap metal.

Brennan Roofing Co Orange County is an independent service provider. We’re not affiliated with Boral, but we install and repair Boral roof systems regularly because their tile has been a mainstay in Southern California roofing for decades.

Signs Your Boral Flashing Replacement Is Failing

• Water stains on ceilings or walls near chimneys, skylights, or roof-wall junctions. This is the classic sign. The flashing has separated from the wall or the mortar cap has cracked, letting water travel down the wall cavity before it shows up on your ceiling below the roofline, not directly under the leak.
• Loose or lifted flashing visible from the ground. Walk around your house and look at where the roof meets any vertical wall. If the metal flange has pulled away, it’s no longer doing its job. In Orange County’s Santa Ana wind season, a loose flashing gets worked back and forth until the fasteners fail completely.
• Rust streaks or visible corrosion on any exposed flashing metal. Coastal moisture and salt air accelerate corrosion on galvanized flashing, particularly in Newport Beach, Huntington Beach, and Laguna Niguel. Once rust penetrates the zinc coating, the metal thins quickly and pinholes form.
• Granules or tile debris in gutters directly below flashing lines. When flashing fails, water gets under the tile, softens the underlayment, and begins breaking down the tile’s edge. You’ll often see concrete grit in your gutters before you see water inside.
• Damp or musty attic smell after rain. If your attic has a musty odor after a good Orange County storm, don’t wait. Water is getting somewhere it shouldn’t, and flashing failures are the most common culprit we find when we trace the source.

Replacement Cost & What’s Included

Here’s what Boral flashing replacement costs in Orange County right now:

• Step flashing replacement (roof-to-wall): $18 to $28 per linear foot installed
• Counter flashing (wall-side cap): $12 to $20 per linear foot installed
• Chimney flashing replacement (full saddle, step, and cap): $850 to $1,400 total
• Skylight flashing replacement: $350 to $700 total
• Valley flashing replacement: $22 to $42 per linear foot installed

The range comes down to roof pitch (anything over a 6/12 pitch means safety harnesses and slower work), whether we need to cut back stucco to access the wall side, and whether the old flashing was installed with tile channels we need to clean out first. Every estimate includes parts, labor, disposal, and a written line-item price before any work starts. The price goes on paper, it doesn’t move at the door, and there are no change orders mid-job unless we uncover something structural you approve first.

All flashing replacement work is covered by our 365-Day Done Right Promise: it’s in writing, it’s for one full year, and if the repair fails within that period, we come back at no charge.

DIY or Call Us?

Flashing replacement is not a weekend project for most homeowners, and here’s the honest reason: the flashing only works if the tile is properly lifted, the old sealant is fully removed, and the new flashing is secured to the wall sheathing under the weather barrier. Get the lap direction wrong or leave a gap, and you’ve built a water inlet disguised as a repair. Working on a tiled roof also means working on a steep surface while handling tiles that weigh eight to twelve pounds each. A dropped tile from an Orange County second story will go through a car windshield or worse.

That said, there’s one thing a homeowner can safely do. Grab binoculars and inspect your visible flashing for rust, lifting, or missing sections. That inspection helps you decide whether to call us or keep monitoring. If anything looks off, call (559) 258-5703. We’ll give you a written price before any metal goes up, and you’ll know exactly who’s on your roof: background-checked, uniformed technicians from Brennan Roofing Co Orange County.

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