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 Replacement Across Westmont
Roof replacement in Westmont usually means tearing off 30 to 80 years of sun-baked shingles or failed rolled roofing and starting fresh with decking, underlayment, and a material that actually fits a low-pitch or flat roof. Most homes here were built between the 1920s and 1960s, which means the roof you’re looking at today is probably not the original, but it may be the second or third layer sitting on framing that needs attention. We work throughout the 90047 corridor and know these roofs by their symptoms: granule loss on the south slope, soft decking near parapet walls, scuppers packed with leaf litter against stucco. Call (866) 974-2271 and we’ll walk your roof before we ever quote it.
Why Koreatown Roofing Is Westmont’s Preferred Roof Replacement Company
We’re a roofing-only contractor. That sentence matters more in Westmont than in most places, because the roofs here demand a specialist’s eye. A general contractor who runs a roofing crew twice a month isn’t going to recognize why a parapet drain keeps backing up on a 1948 low-rise, or why the valley flashing on a stucco bungalow failed eleven years early. We see those failures every week. Our Roof Replacement team works on nothing but roofs, every day, across inspection, repair, and replacement. For Westmont property owners, that means the person measuring your roof can also tell you whether your decking will survive another tear-off.
Manny Cordero runs our crew, and he’s the one who holds the tape measure and walks the roof with you. You deal with the same people from first estimate to final inspection, not a rotating crew dispatched from a call center. When a Westmont customer calls back two years later because a seam is leaking at the property line, the person who installed that seam is still on our payroll and still knows your roof.
Styles & brands we work with
Roof Installation in Westmont
Roof Installation in Westmont is rarely a simple shingle swap. The older stucco bungalows and low-rise multi-unit buildings that dominate 90047 often have low-pitch or flat sections that need membrane decisions, not shingle decisions. A typical tear-off and re-roof on a Westmont bungalow runs $9,000 to $16,000 depending on decking condition and material choice. On a flat or low-pitch section, modified bitumen or a single-ply membrane usually makes more sense than forcing shingles onto a slope they were never designed for.
Choosing Between Pitched and Flat Materials
If your roof pitch is 2:12 or lower, shingles are the wrong choice no matter what a builder-grade quote says. We lay out the actual options for your specific slope: architectural shingles where pitch allows, peel-and-stick underlayment for sections that gather water, and membrane systems for true flat sections over carports or add-on units.
When a Repair Becomes a Replacement
Westmont roofs tend to get patched for years before anyone replaces them. Granule loss on the south slope, water stains near a scupper, a soft spot by the chimney – each gets a patch. We’ll tell you when patching still makes sense and when three more patches are just financing your next tear-off in installments.
Roof Replacement Contractor in Westmont
A Roof Replacement Contractor in Westmont needs to understand how piecemeal replacements work in this neighborhood. Unlike a master-planned suburb where whole tracts get re-roofed on a schedule, Westmont roofs get replaced building by building, each with different materials, ages, and framing styles. That means your new roof often gets married to a neighbor’s older roof at a shared wall or parapet line. A typical full replacement on a mid-century Westmont home runs $11,000 to $22,000 once you factor in decking replacement, drip edge, flashing at all penetrations, and disposal of two or even three old layers.
Decking Assessment Before You Sign
We don’t quote a Westmont replacement over the phone or from satellite photos. We walk the roof, check the decking from inside the attic, and probe around every scupper and parapet before giving you a line-item number. Soft decking from a decade of slow scupper overflow is routine here, and you need to know about it before the tear-off, not during.
Working Within Westmont Building Rules
Westmont is unincorporated LA County, which means permits go through LA County Building and Safety, not a city hall. That often means inspections on a county timeline. We pull the permit, schedule the inspection, and handle the paperwork. You get a roof that passes the first time because we don’t skip the details inspectors in this area actually check.
Trusted Brands We Service in Westmont
We’re not married to one manufacturer, and that matters on the patchwork of roof styles in 90047. We work with GAF, CertainTeed, Owens Corning, and Boral among others, so your material choice is driven by what your roof actually needs, not by what one supplier has sitting in a warehouse. Your roof, your material choice. That’s the whole point. If a low-pitch bungalow needs a CertainTeed membrane and a pitched gable needs GAF architectural shingles, that’s what we install. No brand quotas, no leftover inventory pushed onto your roof to hit a margin.
See the difference
Before
After
Before
After
Before
AfterCommon Roof Replacement Problems We See in Westmont Homes
- Sun-baked granules and brittle shingles: Intense dry-season UV cooks builder-grade or original shingles until the granules wash off and the matting cracks. By the time you see bare spots, the shingle is usually past repair and the first heavy rain will find its way through.
- Clogged scuppers against stucco: Q On the older flat and low-pitch roofs throughout 90047, parapet and scupper drains collect windblown leaves and debris where the roof meets stucco walls. The first real storm of the season is when a decade of slow drainage suddenly shows up as a ceiling stain.
- Failed flashing at property-line seams: Because Westmont re-roofs happen building by building, one new roof often meets an older neighbor at a shared wall. That seam is where water gets in if the flashing isn’t lapped correctly, and it’s one of the first things we check on every replacement.
- Multiple old layers on older framing: We regularly tear off two layers of brittle composition shingles that should have been removed decades ago. The extra weight stresses roof framing that was never sized for it, and the tear-off reveals decking damage that a shingle-over would have hidden forever.
Pricing for Roof Replacement in Westmont, CA
A tear-off and replacement on a typical Westmont bungalow runs $11,000 to $18,000 for architectural shingles on a moderate pitch, including new underlayment, drip edge, pipe jacks, and ridge vent. Flat or low-pitch sections that need membrane instead of shingles usually land between $9,000 and $16,000 depending on square footage and decking condition. Roof decking replacement adds $2 to $4 per square foot when soft spots turn up, which happens often here. If your roof is on the smaller side or has simple geometry, you may fall under those ranges; complex multi-level roofs push past them. We give written line-item estimates so you can see exactly where money goes. Call (866) 974-2271 for a free estimate and we’ll put real numbers on your roof, not a salesman’s guess.
We Also Serve Cities Near Westmont
Our crews cover Roof Replacement in Westmont and the surrounding communities, including View Park-Windsor Hills, West Athens, Inglewood, and Lennox. If your property sits near the border of any of these areas, the same crew and the same pricing apply. We don’t run different crews for different zip codes.
Serving Westmont, CA — Our Local Coverage Area
We’re based in the Westmont 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 Replacement in Westmont
You are not stuck with rolled roofing, but shingles are not always the upgrade people assume. For any slope below 2:12, shingles fail prematurely because water moves too slowly off the roof and works its way under the overlaps. Modern modified bitumen and single-ply membranes seal far better on low slopes and can be installed with a clean, finished look. We’ll show you membrane options that outlast the rolled roofing you have now without forcing a shingle product where it doesn’t belong. Call (866) 974-2271 and we’ll tell you what your pitch actually supports.
A typical 900 to 1,200 square foot Westmont bungalow with a low-pitch roof works out to 11 to 15 squares of roofing. A square is 100 square feet, and every bid you get will be priced per square for material and labor. Contractors who measure differently or round up produce bids you can’t compare against each other. We measure to the exact square foot and show the math in your estimate, so you can line up two bids side by side and see whether one is missing something or padding something. Call us with any bid and we’ll help you read it.
A replacement gives you the chance to fix it properly, but the scupper itself needs redesign, not just a new roof around it. We’ll widen or reposition the drain, add a proper grate or strainer, and taper the roof surface toward the outlet so water doesn’t pool against the stucco wall. On a recent Westmont job, we tore off two layers of brittle shingles and found soft decking around a clogged scupper where windblown debris had been sitting against the stucco. We replaced the decking, ran ice and water shield through the valleys and penetrations, and set a fresh architectural shingle field with proper drip edge and new fascia. The interior stains stopped at the next winter rain burst.
On newer construction in Westmont, your roof replacement won’t void the structural warranty if the work is done by a licensed contractor and permitted through LA County. The original builder’s roof warranty usually expires or transfers separately from structural coverage. We pull the permit and follow county inspection requirements, which is what builders need to see if a structural claim comes up later. We’ll also document the condition of the framing we expose during tear-off so you have a record of what was there if a separate warranty question ever comes up.
Spend on underlayment and flashing before you spend on shingle prestige. On a Westmont roof, a builder-grade shingle often fails because the underlayment beneath it dried out or the flashing at a scupper or valley gave way, not because the shingle itself was inadequate. A synthetic underlayment upgrade and heavier-gauge drip edge buy you more years than jumping to a premium shingle on the same weak waterproofing layers. Architectural shingles are worth it for looks and wind rating; designer shingle colors are not. We’ll show you the line-item difference so you can choose where the money goes.
Written by Manny Cordero, Owner at Koreatown Roofing, serving Westmont and the surrounding South LA communities.