Boral Flashing Replacement Nationwide

Boral Flashing Replacement: The Los Angeles Owner’s Guide

Boral flashing replacement in Los Angeles typically runs $18 to $42 per linear foot installed, depending on accessibility, the Boral profile you have, and how much of the surrounding material has to come up to do the job right. We carry Boral-compatible flashing stock on our trucks and can usually match your existing profile the same day we look at it. Most homeowners discover the problem the hard way: a water stain on a ceiling, a damp spot near a chimney, or visible rust and separation at a roof-to-wall joint where the old flashing has finally given out.

Call (361) 320-9467

The flashing is the least glamorous part of any Boral roof system, and it’s the part that fails first. It takes the most direct weather exposure, moves with every thermal cycle, and gets brittle under decades of Los Angeles sun. When it starts to go, the tile above it can look perfectly fine while water works its way underneath. If you’re seeing signs of moisture inside the house and you have a Boral roof, flashing is the first place we look.

Key Takeaways

• Installed Boral flashing replacement in Los Angeles: $18 – $42 per linear foot, with most jobs landing between $450 and $1,400 total.
• We stock Boral-compatible flashing profiles on the truck, so most replacements happen same day.
• Flashing fails long before Boral tile does; LA’s heat and smog accelerate the breakdown of old metal.
• The work is backed by our 365-Day Done Right Promise, in writing.

Which Boral Models This Applies To

Boral’s roofing line in Southern California spans several profiles, and the flashing has to match. The most common we see across Los Angeles are Boral’s flat and low-profile barrel tiles, the CedarLite shake profile, and the Mission S-style used on Spanish and Mediterranean homes from the Valley to the Palisades. Each profile has a different rise and valley geometry, and the flashing is formed to that specific shape. Getting the wrong profile means gaps, and gaps mean water entry.

Here’s the compatibility gotcha most people don’t know: Boral flashing dimensions changed subtly after Boral’s roofing division was acquired by Westlake Royal in 2021. Older Boral products, particularly pre-2018 CedarLite and Mission S profiles, take a slightly different flashing width than the current production runs. If your roof was installed before 2018, the flashing on the truck may not match the original without field-bending. We measure the existing profile and the tile pattern before we quote anything, so you don’t get a surprise.

On OEM versus aftermarket: Boral-branded flashing is produced to the exact profile spec, and we order it when the job calls for precise matching on a newer roof. For most repairs, a quality aftermarket flashing cut from the same gauge material and formed to the same profile does the job and costs less. We’ll tell you plainly which one makes sense for your roof and your budget, and we’ll put that recommendation in writing with the price before any work starts. We’re an independent roofing company; we’re not affiliated with Boral, and we don’t pretend to be. We just work with their materials every week across Los Angeles.

Signs Your Boral Flashing Replacement Is Failing

• Water staining on ceilings or upper walls after rain. This is the classic first sign. Water travels along the underside of the flashing and shows up feet away from the actual breach, so the stain location doesn’t always tell you where the problem is. A roofer who knows Boral installations will trace it back to the source.
• Visible rust, pinholes, or flaking metal at roof-to-wall joints. Los Angeles air, particularly in neighborhoods closer to the 405 and the industrial corridor, carries enough pollutants to eat through galvanized flashing in 15 to 20 years. Once you see rust scale, the metal underneath is thinner than it looks.
• Lifted or separated flashing at chimneys, skylights, or parapet walls. Thermal expansion and contraction works the fasteners loose over time. The flashing pulls away from the wall, and water runs straight down behind it. In the San Fernando Valley, where summer roof temperatures hit 140 degrees, this movement is worse than in coastal areas.
• Roof cement or sealant cracking around mortar edges. Older Los Angeles installations often relied on tar and cement instead of properly lapped flashing at tile-to-wall transitions. That tar bakes hard and cracks in about three to five years. It was never a permanent fix, and when it fails, the flashing underneath is usually the next thing to go.
• Granule loss or dark streaking on adjacent underlayment areas. If you can see the underlayment around a flashing point and it’s breaking down, water has been getting past the flashing for a while. By the time the underlayment degrades, you’re usually looking at decking involvement and a bigger repair bill.

Replacement Cost & What’s Included

For Boral flashing replacement in Los Angeles, plan on $18 to $42 per linear foot installed. A standard chimney flashing replacement on a Boral tile roof runs $450 to $900. A full roof-to-wall flashing run along a 30-foot section runs $550 to $1,300. The range depends on how much tile has to come up, whether the decking underneath is still sound, and how many stories up the work happens to be.

Our price includes removing the existing flashing, inspecting the underlayment and decking beneath it, replacing the flashing to match your Boral profile, re-bedding the tile, and hauling off every scrap of old material. The price goes on paper before any work starts, and it does not move at the door. No change orders, no “we found extra damage” phone calls unless you’re standing right there with us looking at it. Every Boral flashing replacement we do in Los Angeles carries the 365-Day Done Right Promise: in writing, for one full year, and we come back for free if it fails.

DIY or Call Us?

What you can safely do yourself: look. Walk the perimeter of your house, check for rust on any metal you can see at roof-to-wall joints, and keep an eye on ceiling stains after heavy rain. That’s honest homeowner diligence, and it costs you nothing.

What you shouldn’t do is get up on a Boral tile roof to pull flashing. Tile is brittle, and walking it wrong cracks it. Flashing replacement means lifting tile, cutting back underlayment, and working at height along roof edges and chimneys. Falls from roofs remain one of the most common causes of serious injury on residential job sites, and a cracked tile you didn’t notice becomes a leak you won’t find for six months. One honest paragraph, not a scare tactic: this is the point where we tell you to call a professional. Travis Oakley, our owner at Brennan Roofing, still pulls his own inspections, and he’ll tell you flat-out whether a $600 flashing repair fixes it or whether you’re looking at something bigger. Call (361) 320-9467 and we’ll schedule that inspection.

FAQs

Get a Written Price Before Any Work Starts

If you have a Boral roof and suspect flashing failure anywhere in Los Angeles, call (361) 320-9467. You’ll talk to a live person, not a voicemail system, and we’ll schedule an inspection with a background-checked, uniformed technician who shows up when we say they will. You’ll get a written price for the flashing replacement before any work begins, and the number won’t change at the door. A roof that’s squared away doesn’t need a sales pitch.

Written by Travis Oakley, Owner, Brennan Roofing at Brennan Roofing, serving Los Angeles and nearby areas.