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 Paramount
Roof replacement in Paramount runs between $9,800 and $18,500 for a typical mid-century single-story home, with architectural shingle tear-offs landing around $12,000 to $15,000 on average. We’re Koreatown Roofing, a roofing-only contractor, and we work throughout the 90723 zip code every week. If your roof is at the end of its life on one of the tight lots near Paramount Boulevard or Alondra Boulevard, call (866) 974-2271 and Manny Cordero will set up a free inspection.
We know Paramount’s housing stock well. The homes here were built mostly between the 1950s and 1970s, which means shallow-pitch roofs, attached garages with flat sections, and composition shingles that have been cooking under inland sun for decades. That’s a different job than what you’d see in newer neighboring cities. We plan for it before we ever tear anything off.
Why Koreatown Roofing Is Paramount’s Preferred Roof Replacement Company
Koreatown Roofing is a roofing-only contractor, not a generalist who picks up roofing work between kitchen remodels. Every job we take on in Paramount is a roofing job. That focus means our crews know exactly what they’re walking into when they arrive at a 1960s tract home with a low-slope addition over the back bedroom and a shared property line six feet from the neighbor’s wall.
We’re rooted in the community, and our reputation depends on how we handle jobs in neighborhoods like the ones off Somerset Boulevard and Garfield Avenue. When we quote a roof in Paramount, we’re quoting a roof on a street where neighbors talk to each other. That matters. We don’t send rotating crews from a call center. The people who inspect your roof are the same people who replace it.
Manny Cordero personally reviews every Paramount estimate before it goes out. If there’s a flashing detail at the property line that needs attention, it’s in the written scope, not discovered later as a surprise. That’s the kind of accountability you get from a company whose name is tied to the neighborhoods it serves.
Styles & brands we work with






Asphalt Shingle Roof Replacement in Paramount
Asphalt shingle roof replacement is the most common job we do in Paramount, and on the mid-century single-story homes that dominate this city, it usually means a full tear-off down to the decking. A typical asphalt shingle roof replacement in Paramount runs $9,800 to $14,500, depending on square footage, roof complexity, and what the tear-off uncovers. Most homes here have original or once-replaced composition shingles that are past their useful life.
The sun is relentless on the south LA County plain. Shingles on Paramount roofs don’t just wear out from rain; they bake, dry out, and lose their granule surface over decades of UV exposure. By the time we’re called, curling, cracking, and bare spots are the norm. We replace the full system: underlayment, edge metal, shingles, and ventilation where needed.
Decking and Underlayment on Older Homes
When we tear off an old Paramount roof, we often find the original 1×6 skip sheathing has delaminated or rotted in spots. On a job near the intersection of Paramount Boulevard and Alondra Boulevard, our crew tore off three layers of aging composition shingles and found exactly that. The 1950s-era sheathing was failing and the fascia was soft from years of winter rain exposure. We replaced 12 linear feet of fascia, installed new 7/16-inch OSB decking, laid down GAF Tiger Paw underlayment, and finished with CertainTeed Landmark architectural shingles, all after pricing the decking and fascia repairs in writing and getting the homeowner’s approval before we ordered materials.
That’s how we handle every asphalt shingle job in Paramount. Nothing gets added to the bill without a written change order.
Architectural Shingle Options
Most Paramount homeowners choose architectural shingles when they’re replacing an old three-tab roof. They hold up better to heat cycling and give the home a deeper shadow line. We offer architectural options from GAF, CertainTeed, and Owens Corning, so you’re not locked into whatever one manufacturer happens to have in stock. The choice should fit the job and your budget, not our supplier relationships.
New Roof Installation in Paramount
New roof installation in Paramount is less common than re-roofing, because the city’s housing stock is overwhelmingly mid-century rather than newly built. But when we do new roof installation here, it’s typically for an addition, a garage that was never properly roofed, or a full tear-off where the existing structure needs a complete rebuild. A new roof installation on an addition or detached structure in Paramount typically runs $10,000 to $17,000, with full-home new roof installations starting around $13,000 and going up from there based on size and roof geometry.
New construction in Paramount means working on compact lots where access is tight and material staging is a real consideration. We’ve done new roof installs on homes within earshot of the 710 and 105 freeway corridors, and we plan deliveries and crane access accordingly. You don’t want a roofing crew blocking a shared driveway in a neighborhood where every foot of curb counts.
Roof Decking Replacement on New Installs
When a new roof goes on, the decking underneath has to be right. On many Paramount homes, the original decking is skip-sheathed 1×6 boards that don’t meet current attachment standards for modern shingle systems. We replace damaged or undersized decking before laying underlayment, so the new roof has a solid nailing surface. That detail is often skipped by contractors who want to get shingles down fast.
Flat and Low-Slope Sections
Many Paramount homes have flat or low-slope sections over garages, carports, or rear additions. A new roof installation that includes a flat section requires either modified bitumen or a proper low-slope shingle application, not just shingles laid over a shallow pitch. We address those sections as part of the overall system, so you’re not patching a leak six months after the main roof is replaced.
Trusted Brands We Service in Paramount
We work with the brands you already trust. On Paramount roofs, we frequently install GAF, CertainTeed, and Owens Corning products, and we can also source Boral, IKO, Atlas, and Tamko if the job calls for them. Seven manufacturers means we’re not married to one supplier. If a certain shingle profile fits your home’s style and your budget better than another, that’s what we quote. We stock common components for Paramount jobs and have fast turnaround on materials from our local suppliers, which keeps a replacement moving on schedule.
See the difference
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After
Before
After
Before
AfterCommon Roof Replacement Problems We See in Paramount Homes
- Failed flashing at shared property lines and parapets. On Paramount’s tight lots, a single unresolved leak at a low-slope section near the property line can read as a problem on the neighbor’s side. We treat parapet and edge flashing as the make-or-break detail on every replacement, because that’s where water gets in and where blame gets assigned.
- Undersized or damaged framing discovered only after tear-off. Homes built in the 1950s through 1970s often have framing that was barely adequate when new. Decades of heat and occasional rain have left some rafters and fascia boards soft or split. If we don’t inspect before bidding, you’ll be hit with a change order. We inspect first and write allowances into the contract.
- Ponding on flat sections over additions and garages. Flat and low-slope sections are common on Paramount homes. When scuppers clog and underlayment deteriorates, water ponds and finds its way inside during the first real winter rain. These sections need attention during a full replacement, not just a patch over the old surface.
- Multiple layers of old shingles. It’s not unusual to find two or three layers of old composition shingles on a Paramount roof. That adds weight, hides decking damage, and complicates a proper tear-off. A full replacement means getting down to the decking and starting clean.
Pricing for Roof Replacement in Paramount, CA
Here’s what roof replacement actually costs in Paramount in 2026. A standard architectural shingle tear-off on a 1,200 to 1,800 square foot single-story home runs $11,500 to $16,000. A flat or low-slope section replacement over a garage or addition adds $2,500 to $6,000 depending on size and system. Full new roof installation on a complete tear-down scenario starts around $13,000. Decking replacement, if needed, runs $75 to $110 per sheet installed. Fascia repair runs $18 to $28 per linear foot. Every quote is a written line-item estimate, and any uncovered damage is priced in writing before we do anything. Call (866) 974-2271 for a free estimate.
We Also Serve Cities Near Paramount
We work throughout the Gateway Cities and surrounding areas. Beyond our Paramount coverage, you’ll find our Roof Replacement team in Bellflower, Lynwood, East Rancho Dominguez, and Downey. If you’re in a neighboring community and need a dedicated roofing contractor, call us at (866) 974-2271.
Learn more about how we approach full replacements on our Roof Replacement page.
Serving Paramount, CA — Our Local Coverage Area
We’re based in the Paramount 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 Paramount
Yes. Once the decking is exposed, Paramount’s building inspector typically requires the roof to meet current code for fire rating, nailing patterns, and underlayment. That almost always means replacing skip sheathing with solid OSB or plywood and adding a modern underlayment like GAF Tiger Paw. We include these upgrades in our initial quote whenever we can see evidence of skip sheathing during the pre-bid inspection, so the permit stage doesn’t become a surprise line item. Call (866) 974-2271 to schedule a free inspection and get a written scope before permits are pulled.
We write a per-sheet and per-linear-foot allowance into the contract before we start. That means if we open a 1960s roof and find rotted decking or soft fascia, you already know what it costs. The decking gets replaced at $75 to $110 per sheet, fascia at $18 to $28 per linear foot, and nothing gets ordered until you approve the written change order. No surprises is not a slogan; it’s the contract structure. Get your free estimate by calling (866) 974-2271.
Parapet flashing, edge flashing at shared walls, and scupper flashing on flat sections. On Paramount’s tight lots, a roof that’s six feet from the neighbor’s wall needs clean edge details, because any water that gets behind the flashing will show up inside your space or appear as efflorescence on the neighbor’s side. We install proper counter-flashing, apron flashing at headwalls, and correct scupper details on every replacement. Call (866) 974-2271 to have us look at your specific roofline.
Yes. We match the low-slope sections with a modified bitumen system or a proper self-adhered membrane, depending on the existing deck condition and slope. The key is that we don’t lay shingles on a pitch that can’t hold them. On many Paramount homes, the garage or rear addition has a nearly flat section that needs a membrane, not shingles. We quote both systems separately so you know exactly what each section costs. Call (866) 974-2271 for a line-item quote.
A typical 1,200 square foot Paramount home has about 14 to 18 squares of roofing, including waste. A garage and low-slope addition add another 4 to 8 squares. Pricing scales by square, with architectural shingles running roughly $520 to $700 per square installed on a straightforward tear-off. More squares means more material and labor, but also more area where underlying issues can hide. We inspect before quoting so the square count you’re given reflects the actual roof, not a guess. Call (866) 974-2271 for a free estimate.
Written by Manny Cordero, Owner at Koreatown Roofing, serving Paramount since the company’s founding with a focus on mid-century homes and tight-lot roofing conditions.