Free roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
Before
After
Before
After
Before
AfterFast, Reliable Roof Replacement Across Lennox
A full roof replacement in Lennox typically runs between $11,000 and $28,000 for a small bungalow or 2-to-4-unit apartment building, with flat roof membrane systems landing on the lower end and architectural shingle tear-offs on the higher end. The work usually takes 3 to 7 days depending on access, and on tight Lennox lots that number matters because staging space dictates the schedule. We know these blocks, the apartment courts off Hawthorne Boulevard and the narrow driveways off 111th and 110th streets, and we plan around them before the first shingle comes off. Call (424) 766-4937 for a written quote and a walk-through of your specific lot.
Why Birchbark Roofing Is Lennox’s Preferred Roof Replacement Company
Lennox is not an incorporated city, which means roof permits and final inspections run through LA County Building and Safety, not a municipal building department. That single fact changes what a replacement job looks like here, and it is one we handle weekly. Our team knows the county plan-check queue, what inspectors look for on a flat roof tie-in at a shared party wall, and how to sequence a tear-off so tenants in the lower unit are never walking under falling debris. Erik Lindgren, who leads our crews, has worked more Lennox flat roofs than most contractors in this part of LA County, and he still walks every job before we quote it.
Homeowners here ask us the same thing on almost every bid: will the crew respect the house, the drive, and the neighbor’s wall? The answer is specific, not a promise without a plan. Shoe covers at the front door. Drop cloths through the hallway to the roof hatch. A dumpster placed on the driveway apron, not blocking the shared drive. A photo of the cleaned-up ground before anyone leaves. Those things are not extras; they are on every Birchbark job, which is why Lennox customers keep our name in the group chats and the landlord forums.
Flat Roof Replacement in Lennox
Flat roof replacement in Lennox is the most common re-roof job we do, because the housing stock here was built mostly between the late 1940s and early 1970s with built-up tar-and-gravel systems that are now decades past their service life. A flat roof replacement in Lennox generally runs between $11,000 and $18,000 for a small 2-unit bungalow, depending on whether the old gravel needs full tear-off, whether decking repairs are required at the parapet walls, and how many roof penetrations need new flashing. Most flat replacements on these buildings are performed over occupied units, which changes the job: we tarp the interior, schedule noisy tear-off windows with the tenants, and never leave an open roof overnight.
Built-Up Tar-and-Gravel Tear-Off
Most Lennox flat roofs are original built-up tar-and-gravel, with gravel embedded in hot asphalt over multiple felt layers. By the time we’re called, the gravel is thin, the felts are blistered from marine-layer moisture cycling, and the asphalt has alligatored into brittle cracks. We tear down to the deck, inspect for rot at the perimeter and at penetrations, and install a modern membrane system with new drip edge and flashing.
Membrane Systems Over Occupied Units
When the building is occupied, we choose systems that can be installed without torch-down flames. GAF and CertainTeed cold-applied or self-adhered membranes eliminate the open-flame risk above a family’s ceiling, and they perform well in Lennox’s daily fog-to-sun cycling. The result is a quieter, safer install, and tenants notice the difference.
Roof Installation in Lennox
Roof installation in Lennox for new construction or complete re-decks follows the same county permit path as a replacement, but adds the complication of LAX airspace. Because much of Lennox sits beneath the approach corridors to the airport, FAA Part 77 height restrictions can cap how high we can set a crane or aerial lift on a given lot. A roof installation in Lennox on a small apartment building or new ADU over a detached garage generally runs between $14,000 and $28,000 depending on roof size, slope design, and whether the project triggers any site-specific FAA review.
New Construction and ADU Roofs
New construction roofs in Lennox skew flat or very low-slope, both because the lots are small and because the planning norms in this unincorporated area favor compact, rectangular massing. We work with the county plans as drawn, coordinate lift times around any Part 77 constraints on the parcel, and schedule the install so the framing crew’s schedule is not held up waiting on a crane.
Roof Decking Replacement
On older bungalows here, the decking under the shingles or gravel is often the real failure point. Years of low-frequency vibration from aircraft overflight works nails loose and lets moisture into the plywood at the eaves and around vents. When we quote a Lennox replacement, we include a decking inspection line item and flag in writing what we expect to replace before the job starts, so the homeowner sees the full picture, not a vague “maybe” that turns into a change order.
Trusted Brands We Service in Lennox
We install and service roofs using materials from GAF, Atlas, and Tamko, with each brand chosen for what it does on a Lennox roof, not for the logo. GAF flat membranes handle the daily marine-layer moisture and ponding we see on these low-slope buildings. Atlas shingles hold up to the heat-to-fog cycling that bakes and swells cheaper products. Tamko’s low-slope options work well on the modern ADU and new-build roofs popping up across unincorporated Lennox. Because we stage these materials locally, restocks mid-job do not mean a week-long delay, even for odd-sized trims and flashing.
Common Roof Replacement Problems We See in Lennox Homes
- Fastener back-out from LAX overflight vibration. The near-constant low-frequency hum from aircraft approaches loosens screws and nails over years, especially along shared party walls and at roof edges, and that is often the first domino in a leak.
- Marine-layer blistering on flat built-up roofs. Daily fog and heat cycling blisters the asphalt felts and lets moisture in through failed seams at parapet walls and roof penetrations, even in dry years.
- Party-wall flashing failures on shared lots. Most Lennox buildings share at least one wall, and when the flashing at that wall fails, water travels inside the neighbor’s unit rather than showing up on the roof first. Neighbor complaints often reveal a roof problem neither owner knew about.
- Ponding and decking rot under old gravel. Because Lennox roofs are nearly flat and the lot drainage is tight, water pools in the same low spots for years. The decking under those pools rots quietly, hidden beneath gravel that looks intact from the ground.
Pricing for Roof Replacement in Lennox, CA
Here is what we see on Lennox bids, in real dollar terms. A flat roof tear-off and membrane replacement on a small 2-unit runs $11,000 to $18,000. A shingle roof replacement on a modest bungalow runs $12,000 to $21,000, and on a 3-to-4-unit apartment building with architectural shingles, $18,000 to $28,000. Access tightness moves the number: a lot where we can stage a dumpster on the driveway apron is cheaper than one where we must coordinate a street closure or crane. Decks, rotted fascia, and failed party-wall flashing add line items we spell out in the written price before any work starts, never after. You get the number in writing, in dollars, and the price does not change because we forgot something.
Call (424) 766-4937 and we will walk the roof with you and put the exact quote in your hand.
We Also Serve Cities Near Lennox
Beyond Lennox, our crews cover nearby communities across the LA basin. If you are in Lennox and have a rental or family home in a neighboring area, we regularly take on Roof Replacement work in Los Angeles, San Diego, San Jose, and San Francisco. The same written-price rule and the same clean-up standard apply everywhere we go.
Serving Lennox, CA - Our Local Coverage Area
We’re based in the Lennox 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 Lennox
Lennox is an unincorporated area of Los Angeles County, so there is no city building department to issue your permit. Every roof replacement application, plan check, and final inspection for Lennox properties runs through LA County Building and Safety. That means a different fee schedule, a different inspection phone queue, and a different set of field expectations than a homeowner in Hawthorne or Inglewood would face. We prepare our Lennox permit packages for the county’s review process from day one, and we schedule our work around their inspection windows, not the other way around. Call (424) 766-4937 and ask us what your specific roof will need for county sign-off.
Yes, they can. Much of Lennox sits under the LAX approach corridors, and FAA Part 77 rules can restrict how high a crane or aerial lift can be set on your lot, and in some cases whether one can be used at all. On tight apartment sites we often skip the crane entirely and hand-carry materials, which adds labor but removes the permit and airspace headache. We check the parcel’s airspace status as part of the bid so your price reflects what will actually be allowed on your lot, not a best-case assumption. Call (424) 766-4937 for an estimate that accounts for access realities up front.
We plan the job around the tenants and the lot, not the other way around. We tarp the interior below the work area, schedule tear-off noise for daytime hours only, and never leave an open roof exposed overnight. If the lot cannot fit a dumpster without blocking the neighbor’s drive, we coordinate the dumpster placement in writing with that neighbor before the job starts. On one 2-unit bungalow near the 110th Street corridor, the original 1960s built-up tar-and-gravel had blistered and fasteners had backed out along the shared party wall from years of low-frequency LAX overflight vibration. We tore off to decking, laid ice and water shield along the party wall and at every penetration, installed a GAF flat membrane with new flashing and drip edge, and staged the dumpster on the driveway apron only because the lot was too tight to block the neighbor’s shared drive. Final inspection cleared through LA County Building and Safety, and the downstairs tenants stayed put throughout. Call (424) 766-4937 to discuss your building’s layout and what staging will look like.
Three local factors work together. First, the daily marine-layer fog and morning moisture cycle blisters built-up asphalt systems and creates persistent ponding at low spots. Second, the chronic low-frequency vibration from LAX overflight backs out fasteners and opens seams at party walls and penetrations, turning small gaps into slow leaks. Third, the buildings themselves are old, most dating to the 1950s and 1960s, and the decking under the old gravel has often been damp for years before anyone notices. You can expect a flat membrane roof in Lennox to need real attention every 15 to 20 years, and sooner if the building sits directly under a frequent approach path. Call (424) 766-4937 for an honest assessment of what your roof’s age and location mean for the next replacement.
We quote it by first standing on the roof and walking the lot, measuring the actual staging options, and checking the county permit and LAX airspace constraints that apply to your parcel. Then we write a line-item price in dollars that includes the dumpster location, any neighbor coordination needed, decking we expect to replace, and the permit and inspection fees. You get that number before any work starts, and it does not change unless we discover hidden rot that no one could have seen from the surface, in which case we show you a written change before we touch it. Call (424) 766-4937 to schedule the walk-through and get your written number.
Written by Erik Lindgren, Owner at Birchbark Roofing, serving Lennox roof replacement and flat roof work with written pricing and a 365-Day Done Right Promise.