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Boral Flashing Replacement: The Los Angeles Owner’s Guide
Boral flashing replacement in Los Angeles typically runs $380-$720 installed for a standard roof-to-wall or chimney transition, and we stock Boral-compatible flashing profiles on our trucks for same-week scheduling. Most homeowners discover the problem the same way: a water stain on the ceiling after the first real rain, or granules from the barrel tiles showing up in the gutter where the flashing has pulled away. The flashing is the unsung joint where roof meets wall, chimney, or valley, and when it fails on a Boral roof, the tile itself is rarely the culprit. It’s the metal underneath that gave out first.
Erik Lindgren has been walking Los Angeles roofs long enough to know that Boral tile jobs live or die by their flashing details. We’re an independent roofing company, not affiliated with Boral, but their tile profile is one we work with regularly across LA neighborhoods from Woodland Hills to Pasadena.
Key Takeaways
- Installed Boral flashing replacement in Los Angeles: $380-$720 for most residential transitions.
- We stock flashing matched to Boral’s barrel and flat tile profiles, plus quality aftermarket equivalents where the OEM part has been discontinued.
- Written price in dollars before any work starts, always.
- 365-Day Done Right Promise on every flashing repair we perform.
Which Boral Models This Applies To
Boral’s concrete roof tile lines share a common footprint across much of their catalog, which means flashing profiles matched to their Barcelona, Saxony, Villa, and Milano series are generally interchangeable where the tile profile height and nail-hole placement line up. The real compatibility variable is not the tile name: it’s the rake and eave treatment. A Boral barrel tile with a high-profile butt needs a step flashing with more depth than a low-profile flat tile on the same wall. We measure the tile rise at the wall line before we order or cut anything.
If you have the original Boral installation paperwork, the tile series is printed on the delivery manifest. Don’t have it? A photo of the tile edge profile and the tile thickness sent to us is enough to identify what we’re matching. Most Boral flashing in Los Angeles is cut from pre-finished galvanized steel or painted aluminum, but coastal homes within two miles of the water should use stainless or copper. Salt air eats standard flashing in about half the time.
One gotcha we see often: Boral’s current OEM flashing is distributed through regional tile suppliers, not direct, and some profiles ordered as “OEM” arrive as generic L-shaped metal with a Boral sticker. We’re upfront about which is which and will show you the material before it goes on the roof. Quality aftermarket flashing from W.P. Hicks or Berger Bros. meets Boral profile specs, often for 20-30% less than OEM, and carries the same workmanship coverage from us.
Signs Your Boral Flashing Replacement Is Failing
- Water staining on ceilings or upper wall corners after rain. Los Angeles roofs see long dry spells, so when water finally hits, the first sign is often a faint brown ring. Flashing that’s lifted or separated at the wall joint lets water run behind the stucco.
- Visible gap between the tile and the wall or chimney. Walk around the house and look up. If you can see daylight through the joint where the tile meets a vertical surface, the flashing has either pulled away or been chewed through by corrosion.
- Granules and tile fragments in the gutter below a wall junction. When flashing fails, tiles near the joint loosen and rub. The debris trail points straight at the problem area before you ever climb a ladder.
- Exposed fasteners or lifted metal flashing edges. Flashing that’s visible from the ground with nails popping or metal edges peeling backward means the original install used undersized cleats or the wrong fastener spacing. It’s a matter of when, not if, water finds it.
- Interior paint bubbling or peeling near vaulted ceiling beams. Water traveling behind flashing often shows up on interior surfaces first, especially in rooms with tongue-and-groove or beam ceilings where there’s no drywall to absorb the first intrusion.
Replacement Cost & What’s Included
For Los Angeles homes, flashing replacement on a Boral tile roof breaks down like this:
- Standard wall-to-roof step flashing replacement: $380-$520 per wall transition.
- Chimney flashing replacement (including counterflashing and reglet cut): $520-$720 per chimney.
- Valley flashing replacement: $40-$65 per linear foot installed.
- Roof-to-pipe or vent jack replacement: $180-$260 per penetration.
These numbers include the flashing material, removal of the affected Boral tiles, new mortar or sealant at the transition, tile resetting, and cleanup. What drives the range: how many tiles must be lifted, whether the existing flashing was set in mortar (common on older LA Spanish-style homes) or just nailed, and whether we find rot in the underlying plywood or battens. You’ll see your exact number in writing before we start, and it doesn’t change unless we both agree in writing that something hidden needs attention.
Every Boral flashing repair in Los Angeles carries our 365-Day Done Right Promise: if the flashing isn’t right, we make it right. That guarantee is stamped on your estimate, not buried in fine print.
DIY or Call Us?
You can safely check what you’re seeing from the ground: take photos of the flashing where it meets the wall or chimney, note any water stains on ceilings near the roofline, and clear gutters below the suspected area so you can watch what collects after the next rain. Tell me what you’re seeing, and I’ll tell you exactly what it means for your roof.
What we don’t recommend is climbing onto a Boral tile roof with a caulking gun. Concrete tile is brittle, walking on it without proper load distribution cracks tiles two and three rows away from where you’re standing, and a roof that’s already had flashing failure usually has hidden soft spots in the decking underneath. A slip on tile sends you off a Los Angeles roof about as fast as anything we know. We’ll do the climbing, the measuring, and the cutting. Call (424) 766-4937 if you’d rather one of us be the one up there.
FAQs
Standard galvanized flashing on a Los Angeles Boral roof lasts 15-20 years, but homes within two miles of the coast often see 8-12 years because of salt exposure. Flashings with three or more nails per foot and properly sealed overlaps push toward the top of that range. If your home is coastal or canyon-adjacent with heavy morning marine layer, ask us about stainless or copper options, which effectively outlast the tile itself.
In some cases, yes: a single lifted nail or a sealant failure at a wall joint can be patched and re-secured for $120-$180. But if the metal has gaps, rust-through, or separation at the reglet, patching buys you one season at best. Boral flashing in Los Angeles that’s visibly corroded should be replaced. We’ll tell you honestly which one you’re looking at, usually with photos from the roof so you can see it for yourself.
A single wall transition replacement takes 4-6 hours on most Los Angeles Boral roofs, including tile removal, new flashing installation, tile resetting, and mortar work. Chimney flashing replacement typically runs a full day. We protect the interior from the start: shoe covers at the door, drop cloths through the hallway, all debris cleared and photographed before we leave.
We stock common Boral-compatible flashing profiles on our trucks, including step flashing sized for high-profile barrel tile and standard counterflashing. For unusual transitions or discontinued OEM specs, we fabricate on site from coil stock matched to your tile profile, which means no multi-week wait for a part to ship. If you’re also considering GAF, Owens Corning, or CertainTeed accessories on other parts of the roof, we stock those lines as well.
No. The price we put in writing before work begins is the price you pay, unless we uncover hidden damage like rotted decking and you approve additional work in writing. No surprises, no change orders slipped into the final invoice. Call (424) 766-4937 for an exact quote, and you’ll have the number in your hands before we ring the doorbell.
If your Boral flashing is showing its age, call us at (424) 766-4937. We’ll set up a time to look at the roof, send you a written estimate with the full breakdown, and schedule the work around your family’s schedule. Shoe covers at the door, drop cloths through the hallway, and a photo of the finished clean-up before we pack up.
Written by Erik Lindgren, Owner, Birchbark Roofing at Birchbark Roofing, serving Los Angeles and nearby areas.






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