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Flat & low-slopeFree roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
CertainTeed Roofing in Lennox, CA | Chatham Roof Repair
We provide independent CertainTeed roofing service across Lennox, from inspection to repair to full replacement. What makes our CertainTeed work here different is simple: most Lennox roofs sit on tightly packed apartments and duplexes where one building’s shingle failure becomes the neighbor’s ceiling stain. Call (866) 361-1724 for a free estimate, and we’ll tell you straight whether your CertainTeed roof needs a patch, a tie-in repair, or a full re-roof.
Why Lennox Residents Choose Us for CertainTeed Service
We’ve torn into enough CertainTeed shingles across Lennox to know exactly how this city’s sun and shared-wall building stock punish a roof. Landmark shingles don’t fail the same way in Lennox as they do three miles west in our CertainTeed service in El Segundo. Here, the heat builds up between adjoining buildings, deck ventilation is often terrible, and a flat-roof tie-in that’s been patched twice already is usually hiding a counterflashing problem that’s been leaking into the unit next door for months. Nelson Quarry, our owner, learned flat-roof diagnostics the hard way: years of field work across the South Bay before settling back in Inglewood, where his family still lives. He’s the one who maps the leak six feet from where the stain shows up, then explains exactly what failed and why before we quote a dollar figure. We’re an independent CertainTeed service provider, not manufacturer-affiliated. That means our recommendations are based on what your Lennox roof actually needs, not a corporate line.
Styles & brands we work with






Common CertainTeed Roofing Problems We Solve in Lennox
- Landmark granule loss and edge curling on low-slope sections. Lennox’s inland-adjacent heat bakes roofs all summer, and on 3/12 to 4/12 transitions the shingles take it hard. Attic ventilation in 1940s-to-1960s apartment rows is frequently inadequate, so the underside of the shingle cooks while the top dries out. We see granule loss starting at year eight and edge curling by year twelve on roofs that should have made it to fifteen.
- XtraGuard underlayment wrinkling and cracking over old board decking. The original board decking in Lennox’s older flats moves more than plywood ever will. When CertainTeed XtraGuard is installed over it, the underlayment wrinkles, then cracks along the board seams. Water migrates laterally, which is why one unit’s leak shows up in the adjoining unit’s ceiling.
- Presidential Shake and Carriage House blistering on mixed-roof accents. Those steep accent sections on Lennox apartments look great for a few years. Then the thermal shock of hot days and cool marine-layer nights cracks the adhesive strips. Blisters form, the seal fails, and wind-driven rain gets underneath. We repair these with matching OEM shingles where the deck is sound.
- Parapet and flat-roof tie-in failures from dried-out sealant. This is the most common call we get in Lennox. The original metal counterflashing gets reused on a re-roof, the sealant dries out after three or four summers, and ponding water finds its way through. The leak shows up next door because the parapet is shared. We replace the counterflashing and membrane, not just the sealant.
- Ponding leaks that cross property lines. On flat-roof tie-ins between adjoining structures, a puncture on one roof quickly becomes a leak in the neighboring unit. These aren’t separate problems. They’re one roof system with a shared drainage plane, and that’s how we treat them.
CertainTeed Service in Lennox: What Local Conditions Mean for Your Equipment
Lennox is a 1.5-square-mile pocket wedged between CertainTeed in Hawthorne and Inglewood, and it’s dominated by low-rise multi-unit rental housing from the 1940s through the 1960s. That one fact changes almost everything about how CertainTeed roofing work gets done here. A single re-roof on a Lennox apartment building often means coordinating shared roof areas, tenant access schedules, and matching flat or low-slope systems across adjoining units. You won’t run into that in neighboring owner-occupied cities where houses sit on their own lots. Here, a CertainTeed Landmark roof on one duplex may share a parapet wall with the building next door, which means our crew has to schedule work in phases so tenants can still get in and out, and we have to match the existing roof profile and color so the repair doesn’t announce itself from the street. Nelson Quarry puts it this way: “A roof doesn’t lie, it just takes a while to tell you what it knows.” In Lennox, what it knows usually involves a shared parapet and a landlord who’s had three tenants text about a ceiling stain in the last month.
CertainTeed Models & Products We Service in Lennox
We service Landmark Architectural Shingles, Presidential Shake, Carriage House, and XtraGuard underlayment across Lennox. When a repair calls for matching shingles, we use CertainTeed OEM product so the profile, color, and warranty class line up with what’s already on the roof. For flat-roof tie-ins and flashing work, we’re honest about the limits of OEM: certain aftermarket membranes and metal counterflashings simply hold up better under Lennox’s UV and ponding conditions, and we’ll tell you when that’s the better call. You get a straight repair-versus-replace assessment based on your actual deck condition and how many adjoining units are involved. We don’t sell you a re-roof when a patch and counterflashing replacement fixes the leak.
See the difference
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AfterCertainTeed Service Pricing in Lennox
Pricing for CertainTeed shingle replacement in Lennox typically runs $350 to $800 per square, depending on shingle type, roof pitch, and whether we’re matching existing product. Flat-roof patches and tie-in repairs land between $450 and $1,400, with the higher end reflecting parapet counterflashing replacement and membrane work across shared roof areas. What drives cost here more than anything is the building: how many units share the roof, whether tenant access needs scheduling, and what the deck looks like once we open it up. Every estimate includes a written line-item breakdown, and we walk you through what’s necessary versus what can wait. Call (866) 361-1724 for an exact quote. Estimates are free.
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 – CertainTeed Roofing in Lennox
Can you match my existing CertainTeed Landmark shingles on a Lennox duplex where only one side needs re-roofing? Yes. We stock Landmark shingles in the most common Lennox colorways and can match the profile and warranty class of what’s already on your duplex. The challenge isn’t finding the shingle, it’s making the transition at the shared parapet look and function right. Give us a call and we’ll assess the match before you commit.
Why do CertainTeed shingles on Lennox flat-roof tie-ins fail faster than on pitched roofs? Flat-roof tie-ins fail faster in Lennox because they concentrate water, heat, and movement in one spot. Ponding water sits against the shingle termination, the sealant between the shingle and the counterflashing dries out in the sun, and thermal cycling works the joint loose. A pitched roof sheds water; a tie-in has to hold it back. We see this failure pattern on Lennox apartments constantly. Call (866) 361-1724 and we’ll inspect your tie-ins before the next rain finds them.
Do you replace the CertainTeed XtraGuard underlayment when patching a flat roof on a 1960s Lennox apartment? It depends on what we find when we open the roof. If the XtraGuard is wrinkled, cracked, or pulling away from the board decking, yes, we replace the affected section. Reusing failed underlayment under a new patch just moves the leak sideways into the neighboring unit. We’ll show you what we found and explain the scope before any work starts.
How do you handle tenant access and noise when re-roofing a densely packed Lennox apartment building with CertainTeed shingles? We schedule re-roofs in phases, typically two half-days or a phased sequence, so tenants can still enter and exit the building without walking under active tear-off. We coordinate with property managers on noise windows and keep the work area contained. Lennox’s narrow streets mean we stage materials tightly and clean up the same day. Call (866) 361-1724 and we’ll map out a schedule for your specific building.
Is a CertainTeed Landmark roof a good choice for a Lennox duplex with a low-slope section? Landmark shingles work on low-slope sections down to 3/12 if the underlayment and ventilation are done right. On Lennox duplexes, the weak point is usually the transition where the pitched section meets the flat roof. If that tie-in is flashed properly and the deck is sound, Landmark is a solid choice. If the tie-in is already compromised, we’ll recommend fixing that first so the new shingles don’t inherit an old problem.
Service Areas Near Lennox
Chatham Roof Repair provides independent CertainTeed service across Lennox and the surrounding South Bay and Inglewood-adjacent communities. We regularly work in CertainTeed service in View Park-Windsor Hills, CertainTeed service in Ladera Heights, Hawthorne, Westmont, and Inglewood. If you’re unsure whether we cover your building, call us at (866) 361-1724.
For the full picture on our CertainTeed capabilities and how we approach this brand across the region, see CertainTeed sales & service. Our Lennox service area page explains the local roofing challenges in this community in more detail.
Book Your CertainTeed Service in Lennox Today
If your Lennox roof is showing granule loss, a ceiling stain, or a flat-roof tie-in that’s been patched before, we’ll find the real source of the problem and quote a fix that fits. Call (866) 361-1724 to schedule your free CertainTeed roofing estimate in Lennox.
Written by Nelson Quarry, Owner at Chatham Roof Repair, serving Lennox and the South Bay since his days at LA Trade-Tech taught him how to name what’s wrong before touching a shingle.