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 runs $9,500 – $18,500 for a typical asphalt shingle tear-off on the 1920s – 1950s bungalows that make up most of this unincorporated South LA pocket. Most jobs take 3 – 6 working days once we start, assuming the decking underneath is sound. If you’re off Western Avenue, Century Boulevard, or the residential blocks between Inglewood and Gardena, you’re in our regular service area. Call (855) 382-1073 for a free estimate, and we’ll send someone out to walk the roof before you commit to anything.
We’re not the kind of company that quotes a replacement over the phone without looking. On Westmont’s narrow lots, where one bungalow sits within arm’s reach of the next, that inspection matters more than it does almost anywhere else. We check what’s under the shingles as much as what’s on top of them.
Why Barnwood Roofing Is Westmont’s Preferred Roof Replacement Company
We’ve spent enough time on Westmont’s 25-foot lots to know that the house next door is part of the job. A tear-off here doesn’t happen in isolation. The crew is often three feet from a neighbor’s roof edge, and one wrong toss of old shingle can damage their property. So we tarp, we protect, we plan debris chutes, and we talk to the neighbor before we start swinging hammers. That’s not a courtesy. It’s how you do a replacement on blocks this close together without making enemies of the whole street.
Ruben Calloway leads our crews, and he’s the one who walks every Westmont job before we price it. That’s a deliberate choice. The homes here hide things. Multiple layered roofs, soft decking, dry-rotted fascia. You want someone who’s seen it before making the call on what you actually need.
Most of the roofs we replace in Westmont are original or first-generation re-roofs on homes built between the 1920s and the post-war years. Long-term owners, not flippers. People who want a roof that lasts another 25 years, not one that photographs well for a listing. That changes the conversation. We’re not selling curb appeal to someone who’s about to move out. We’re building something that stays.
Styles & brands we work with
Asphalt Shingle Roof Replacement in Westmont
Asphalt Shingle Roof Replacement is the most common job we do in Westmont, and on these older stick-framed bungalows it typically runs $9,500 – $14,000 for a full tear-off and re-shingle, depending on roof size, pitch, and what we find under the old layers. The coastal-influenced climate here is mild, but the summer UV is relentless. Santa Ana winds don’t help either. Asphalt shingles on Westmont roofs bake, curl, and lose granules faster than homeowners expect, especially on unshaded southern exposures off Century and the blocks closer to Inglewood.
When we replace shingles in Westmont, we don’t overlay. We pull the old material down to the decking. That’s partly because the local building stock often carries two or three hidden layers already, and partly because you can’t see failed waterproofing if you never look under the surface. On low-slope roofs, which are common here, trapped moisture between layers is a slow rot that nobody notices until a winter rain gets through.
We re-deck where the plywood or tongue-and-groove has gone soft, and we replace dry-rotted fascia and drip edge before the new material goes on. Code-correct drip edge matters on these homes, because Westmont sees enough Santa Ana wind that exposed edges get lifted and torn if the detail isn’t right.
Materials matched to the home
We stock and install products from GAF, CertainTeed, Owens Corning, IKO, Atlas, Tamko, and Boral. That’s seven major manufacturers, and the list exists so we can tell you the truth about what fits your home and budget, not push whatever’s in the warehouse. A mid-century stucco house near the Westmont Recreation Center might do better with a CertainTeed Landmark architectural shingle than a premium Atlas product designed for a different climate profile. The point is you get a choice based on your roof, not our inventory.
What to expect during the job
A typical Westmont tear-off and replacement takes three to five working days. Day one is protection and tear-off. Days two through four are decking repairs, underlayment, shingle installation, and flashing. Day five is cleanup, detail work, and a final walk with you. We don’t leave a dumpster in your driveway longer than we have to, and on tight lots we stage materials on the street wherever the city allows. If you’ve got no driveway at all, which happens on some of these narrow blocks, we’ll coordinate with you ahead of time so you’re not surprised.
New Roof Installation in Westmont
New Roof Installation in Westmont usually means one of two things: a first-time roof on a new addition or ADU, or a complete tear-down-to-framing replacement on an original roof that’s reached the end of its service life. Costs for a new roof install here generally land between $12,000 and $18,500, with the higher end reflecting situations where we’re replacing significant decking, upgrading ventilation, or correcting framing that was never built to current code.
Westmont’s housing stock is overwhelmingly 1920s – 1950s construction. Stick-framed, low-slope, often with original wood-shingle or built-up roofing under whatever asphalt went on later. When we install new, we’re not just putting shingles on. We’re making sure the decking is fastened to the rafters correctly, the valleys are properly flashed, and the edge details will hold up to wind and rain. On some of these older homes, the original roof framing was never designed for the weight and span of modern materials, so we correct that before it becomes a problem.
Roof decking replacement and structural repair
We find soft decking on a meaningful share of Westmont new-install jobs. It clusters along valleys and around pipe penetrations, where water found a way in years ago and never dried out. On a recent 1940s stick-framed bungalow off the narrow blocks near Westmont, our crew pulled three layers of old shingle and found the decking soft along a valley and the fascia dry-rotted from years of Santa Ana UV and deferred leaks. We re-decked the bad runs, laid new ice and water shield in the valleys and underlayment across the field, reset the drip edge, and finished with GAF architectural shingles nailed to spec for the wind rating. The extra decking was priced and approved in writing before we touched it. That’s how we handle every Westmont job.
Flat and low-slope roofing
Plenty of Westmont homes have flat or very low-slope sections, especially add-ons and rear porches built in the post-war years. These need membrane or modified-bitumen systems rather than asphalt shingles. We handle flat roofing as part of a full replacement, and we’re careful to tie the flat section into the pitched roof correctly, because the transition is where water gets in on older homes. If your home has a mix of slopes, we’ll price each section accordingly. No guessing.
Trusted Brands We Service in Westmont
We install and work with products from GAF, CertainTeed, Owens Corning, IKO, Atlas, Tamko, and Boral, and we keep a rolling inventory of common shingle colors and accessory parts that match Westmont’s older housing stock. That matters here, because these bungalows weren’t built with modern roofing dimensions in mind. We can source the right starter strips, ridge caps, and valley metal without a week of lead time on most jobs. If you’ve got a specific product in mind, we’ll tell you honestly whether it’s the right fit for a low-slope Westmont roof, or whether something else in the seven-brand lineup does the job better for less.
We’re brand-agnostic on purpose. Our only interest is putting a roof on your house that performs. That’s what Roof Replacement should mean: the right material, installed correctly, at a price you saw in writing before we started.
See the difference
Before
After
Before
After
Before
AfterCommon Roof Replacement Problems We See in Westmont Homes
- Multiple layered roofs hiding soft decking. We regularly pull two or three layers of old shingle off Westmont homes and find the decking underneath has been rotting in the dark for years. You can’t see it, and an overlay won’t fix it.
- Failed valley and penetration waterproofing. The dry South LA climate masks leaks for months. Then the first real winter rain hits, and suddenly there’s water running down an interior wall. We strip valleys down and redo them properly during replacement.
- Dry-rotted fascia and missing drip edge. Decades of Santa Ana UV and deferred maintenance leave original wood fascia brittle and edge details compromised. We replace rotted sections and install code-correct drip edge before shingles go on.
- Neighbor proximity stress on tear-off logistics. On 25-foot lots, debris management and protection of the adjoining roof and yard aren’t optional. We tarp, we chute, and we plan staging before we start.
Pricing for Roof Replacement in Westmont, CA
A full asphalt shingle roof replacement in Westmont typically runs $9,500 – $14,000 depending on roof size, slope, and condition of the decking underneath. New roof installation on homes requiring structural correction or full re-decking lands between $12,000 and $18,500. Flat or low-slope sections add cost based on square footage and membrane type. What moves the number the most on Westmont homes isn’t the shingle choice. It’s what we find when the old layers come off. Soft decking, rotted fascia, and failed waterproofing are the big three. We handle that with allowances written into the contract, and any added work gets priced and approved in writing before we proceed. Call (855) 382-1073 for a free estimate. We’ll walk the roof, show you what’s there, and give you a line-item number.
We Also Serve Cities Near Westmont
If you’re outside Westmont proper but nearby in Westmont or the surrounding area, we also cover View Park-Windsor Hills, West Athens, Inglewood, and Lennox. Same crews, same honest assessment. Call (855) 382-1073 if you’re in one of those neighborhoods or anywhere else within a short drive of the 90047 ZIP code.
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
Because Westmont’s homes are old enough that the roof you can see is only half the story. We routinely find soft decking, hidden layered roofs, and rotted fascia once the shingles come off. We write allowances into the contract for exactly this, and any added work is priced and approved in writing before we touch it. Call (855) 382-1073 and we’ll walk you through what to expect on your specific home.
We tarp the neighbor’s roof and yard, set up debris chutes, and stage materials so we’re not blocking their access any longer than necessary. On 25-foot lots, the crew is often working within a few feet of the adjoining home, so we plan protection into the job from day one, not as an afterthought. It’s standard practice on every Westmont replacement we do.
We generally won’t. Most Westmont homes already have two or three layers on them, and adding another hides moisture and traps heat, which shortens the life of the new roof and masks soft decking. A full tear-off costs more up front, but it’s the only way to see what’s actually under the surface and give you a roof that lasts decades rather than years. We’ll tell you honestly if a repair is enough.
We work with GAF, CertainTeed, Owens Corning, IKO, Atlas, Tamko, and Boral. Having seven manufacturers in the mix means we match the product to your home’s roof profile and your budget, not to whatever we happen to stock. For Westmont’s low-slope bungalows, that often points toward architectural shingles from CertainTeed or Owens Corning, but we’ll show you the options side by side.
We use line-item pricing with explicit allowances for decking repair, fascia replacement, and waterproofing surprises. Every added scope is priced in writing and needs your approval before we proceed. The quote you get after the inspection is built on what we can actually see, and we tell you what the likely hidden costs are before you sign. Call (855) 382-1073 to schedule a free inspection and get a number you can plan around.
Written by Ruben Calloway, Owner at Barnwood Roofing, serving Westmont and South LA since the beginning.