Metal roofing
Architectural shingles
Tile roofing
GAF
Owens Corning
Flat & low-slopeFree roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
Fast, Reliable Roof Installation Across Walnut Park
Roof installation in Walnut Park typically runs $8,500 to $18,000 for a full tear-off and architectural shingle replacement on the 1920s to 1950s bungalows that dominate the grid. Most jobs are completed in 3 to 5 working days once the permit clears. Call us at (213) 521-8272 and you’ll get a written price before anything is torn off, along with the name and photo of the technician who will be on your roof before they arrive.
We work the narrow alleys and shared driveways between Broadway and Seville Avenue every week, so we know what Walnut Park throws at a crew before the first ladder goes up. Grant Whitlock leads the team, and every tech who steps onto your property arrives badged, uniformed, and background-checked under our Threshold Verified standard.
Why Mercer Roofing Co Los Angeles Is Walnut Park’s Preferred Roof Installation Company
Walnut Park is mostly small stucco bungalows from the 1920s through the 1950s, and they came with details that newer construction doesn’t have. Original clay tile set directly onto spaced sheathing with no underlayment. Gravel-and-tar built-up roofs. Decking that has spent eighty years cooking in the sun and now comes apart when you pull a nail. We’ve spent years working those conditions, and the crews we dispatch to Walnut Park know them by sight.
When you call, a live person answers. Not a voicemail. Not a callback form. You talk to a human, and you get a written price before any work begins. That’s how it has worked since our founding in 2000 as part of the Threshold Group family, and it’s how every independently owned location operates under the same Threshold Verified standard.
Walnut Park homeowners tell us the same thing after a job is done: the badge at the door was the moment they relaxed. Before a single boot touches your threshold, you know their name, you’ve seen their face, and you can check the photo ID against the picture we sent. That matters when you’re home alone, when your kids are in the other room, when you’ve been burned by a stranger at the door before.
Every roof we install includes the 365-Day Done Right Promise. If the work isn’t right within a year, we make it right. In writing. On every job.
Styles & brands we work with
TPO Roofing Installation in Walnut Park
TPO Roofing Installation in Walnut Park is a common upgrade for flat and low-slope additions on these older lots, especially over enclosed porches and the flat sections we find behind the gable on many 1930s and 1940s homes. TPO is a heat-welded single-ply membrane that reflects the brutal August sun off your roof instead of absorbing it, which keeps an unventilated attic from turning into an oven.
A TPO install on a typical Walnut Park flat section runs $6,200 to $9,800, depending on whether we’re overlaying a sound substrate or tearing off an old built-up gravel roof first. The welded seams are the whole game with TPO. If the crew doesn’t get them right, water finds the pinhole and you don’t see the stain until the drywall bubbles a year later. We inspect every seam before we leave.
When a Walnut Park Homeowner Needs TPO
The original built-up roofs on these bungalows were never meant to last eighty years. Once the gravel starts thinning and the sun-baked membrane cracks at the pipe penetrations, replacement is overdue, and TPO is the modern fix. If you’re already putting architectural shingles on the sloped sections, installing TPO on the flat sections at the same time is cheaper than splitting the job.
What a TPO Install Covers
We remove the old membrane and gravel, add or replace tapered insulation to get the drainage slope right, then mechanically fasten and heat-weld new TPO. The flashing details at the edges and penetrations get reinforced cover strip, which is where budget installs fail and ours don’t.
Shingle Roof in Walnut Park
Shingle roof replacement in Walnut Park is the workhorse job on these blocks, almost always an architectural asphalt shingle from GAF or Owens Corning over the original 1920s to 1950s framing. The shingle itself is the easy part. What makes or breaks the job is what’s underneath, and that’s where we spend most of our inspection time.
A full tear-off and architectural shingle install on a typical Walnut Park bungalow runs $8,500 to $14,000. If the decking has rotted and needs a full redeck, add $2,800 to $5,500. We write that possibility into your estimate before we start, so the number doesn’t move on day two.
What Goes Under the Shingles
New synthetic underlayment, new drip edge, new flashing where the roof meets walls and chimneys, and a water-and-ice barrier at the eaves. On Walnut Park homes where original tile is being removed from spaced sheathing, we always add a solid deck or foam backer before shingles go on. Skipping that is how leaks start before the first winter rain.
When Shingles Beat Tile in Walnut Park
If your original clay tile has cracked tiles scattered across the plane and the tile is cemented directly onto gapped sheathing, resetting a few tiles won’t solve the leak. Replacing the whole roof with architectural shingles over new decking usually costs less than reroofing in new clay tile, and the warranty is comparable.
Trusted Brands We Service in Walnut Park
We install and repair roofs using manufacturer-recognized shingle brands including GAF, Atlas, and Tamko, and we stock common parts locally for fast turnaround on Walnut Park jobs. If a delivery gets delayed or a bundle arrives damaged, our crews can often pull what they need from local supply houses the same day rather than leaving your roof half-finished. The brand matters less than the installer’s hand, but we’re certified to install the major shingle lines so your manufacturer’s warranty holds.
See the difference
Before
After
Before
After
Before
AfterCommon Roof Installation Problems We See in Walnut Park Homes
- Cracked original clay tile with no underlayment. Many 1930s tile roofs in Walnut Park were cemented directly to spaced sheathing, which was standard practice at the time. A single crack becomes an open channel into the attic, and the first sign is often a ceiling stain nowhere near the cracked tile.
- Rotted or split decking hidden under old shingles. Decking on 80-year-old homes has been through decades of summer heat and winter moisture. Snap two nails into it and the board splits, which is why many reroofs in this neighborhood need a full redeck instead of an overlay.
- Sun-baked built-up gravel roofs failing at penetrations. The flat sections over these older additions expand all day in the Walnut Park sun. The membrane cracks first around the plumbing vents, and water gets inside without ever showing a leak where the problem started.
- Insufficient attic ventilation cooking the new shingles. The original bungalows were built with almost no eave or ridge venting. We add intake and exhaust venting on most Walnut Park reroofs so the new shingles don’t bake from underneath and fail prematurely.
Pricing for Roof Installation in Walnut Park, CA
Here’s what Walnut Park homeowners should expect to budget. A straight architectural shingle reroof on a small bungalow starts around $8,500. A full redeck adds $2,800 to $5,500 depending on square footage. TPO on a flat section runs $6,200 to $9,800. Removing original clay tile and replacing with shingles over new decking typically falls between $12,500 and $18,000. Every estimate is a written line-item quote delivered before work starts, and the price doesn’t move unless we find something hidden and you approve the change in writing first.
Call us at (213) 521-8272 and we’ll schedule a free estimate. Roof Installation starts with an inspection, not a handshake.
We Also Serve Cities Near Walnut Park
Our crews work Walnut Park, Los Angeles, Burbank, South Gate, and Lynwood, so we’re familiar with the older housing stock across the whole southeast LA basin. If you’re just outside the Walnut Park boundary, call us at (213) 521-8272 and we’ll confirm coverage for your street.
Serving Walnut Park, CA - Our Local Coverage Area
We’re based in the Walnut Park area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About Roof Installation in Walnut Park
The original decking on your 1920s to 1950s bungalow is a half-inch to three-quarter-inch solid board that’s been drying in the attic heat for eight decades. It splits when we nail into it, and code won’t pass a permit if the decking can’t hold fasteners. We’ll know after the tear-off whether you need a full redeck or spot replacement, and we write the allowance into your contract before we start. Call us at (213) 521-8272 for an inspection and exact quote.
We lift the tile, repair or replace the decking, install ice and water shield at the eaves, lay new synthetic underlayment and drip edge, and reset the original tiles. On Seville Avenue we opened a 1941 bungalow and found its original tile set without underlayment over gapped sheathing. Our crew pulled the tile, repaired the decking, laid the new base, and reset those original tiles. The attic stayed dry through the next winter’s rains and the homeowner avoided a full tile replacement.
Yes. A reroof permit in Walnut Park requires an inspection before we can cover the underlayment, and the inspector will fail the job if the decking is unsound or the ventilation doesn’t meet current code. That’s the same dynamic as opening walls on a 1940s home: the old work underneath sets the standard, not the new surface. We pull the permit, schedule the inspection, and make sure it passes.
Yes. The same crew starts the job and finishes it. We work the tight setbacks, narrow alleys, and shared driveways around Seville Avenue and Broadway every week, and we plan the tear-off logistics so we’re not blocking a neighbor’s driveway without notice.
We don’t overlay built-up gravel. We tear it off and remove the old gravel ballast, which often lightens the roof compared to what’s sitting on it now. If we install TPO in its place, the new assembly weighs less than the waterlogged gravel and membrane it replaced. Call (213) 521-8272 for a free estimate and we’ll explain the current roof load on your specific home.
Written by Grant Whitlock, owner at Mercer Roofing Co Los Angeles. Serving Walnut Park roofing customers with written pricing, badged technicians, and the 365-Day Done Right Promise since 2000.
For a free estimate on roof installation in Walnut Park, call (213) 521-8272. A live person answers, and your technician’s name and photo arrive before they do.