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Flat & low-slopeFree roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
Fast, Reliable Roof Installation Across Lennox
Roof installation in Lennox runs between $11,500 and $34,000 for a standard single-family home, depending on material, square count, and what we find when the old roof comes off. That range covers both shingle roofs and standing seam metal, the two systems we install most often for Lennox homeowners. If you’re pricing a replacement or planning a new build near Lennox Park or along Hawthorne Boulevard, call (213) 521-8272 for a written line-item estimate before any work begins.
We’ve worked throughout Lennox long enough to know what this neighborhood’s roofs go through: intense sun, Santa Ana wind gusts, and the occasional winter downpour that finds every weak flashing. Our Roof Installation team treats Lennox as our home turf. We know the county permit path for unincorporated areas, we know which 1950s framing holds up and which doesn’t, and we know what those old swamp coolers have been quietly doing to the decking underneath them.
Why Mercer Roofing Co Los Angeles Is Lennox’s Preferred Roof Installation Company
Homeowners in Lennox don’t want a crew that looks at their street like a map pin. They want a roofer who knows that Lennox Boulevard sees different wind exposure than the blocks east of Inglewood Avenue, and that post-WWII homes here often carry original skip sheathing under layers of newer material. That’s the kind of local knowledge that changes how a roof gets installed.
Every Mercer technician who steps onto a Lennox roof is background-checked, identity-verified, and uniformed. Before the visit, you get the technician’s name and photo sent to your phone. At the door, they badge in with a photo ID. That’s the Threshold Verified standard, and every Mercer location is contractually held to it. For a homeowner home alone or a parent with young kids, that’s the difference between a roofer you trust and a stranger you hope for.
Grant Whitlock, who leads Mercer Roofing, built the company around one idea: the roofing industry ignores the stranger-at-the-door problem. We don’t. You’ll know who’s coming, what they’ll do, and what it costs, in writing, before a single nail is driven.
We carry GAF, CertainTeed, Owens Corning, IKO, Atlas, Tamko, and Boral materials, and we stand behind installations with the 365-Day Done Right Promise. If it’s not right within a year, we make it right. Written guarantee included with every job. That’s not a slogan. It’s the paper you keep.
Styles & brands we work with






Shingle Roof in Lennox
Shingle roof installation in Lennox is the most common full replacement we do, and it works well here when you choose the right shingle for the sun load this area gets. A shingle roof in Lennox typically runs $11,500 to $21,000 installed, depending on square count, tear-off layers, decking condition, and the shingle line you choose.
We pull permits through Los Angeles County for every shingle roof in Lennox because the county’s unincorporated status has its own permit triggers and inspection schedule. That’s not a hurdle. It’s the thing that keeps your installation legal and your resale clean.
When Shingle Roof Makes Sense in Lennox
If your Lennox home has a pitched roof with asphalt shingles from the 1980s or 1990s, a shingle replacement is usually the most cost-effective path. Post-WWII homes in Lennox were often built with wood shake or early asphalt shingles, and those have largely reached the end of their life. Composition shingles now dominate for a reason: fire resistance, wind ratings, and a price point that keeps replacement within reach.
How We Install Shingle Roofs in Lennox
We don’t roof over failed materials. We strip to decking, inspect every rafter and seam, and replace rotted decking before underlayment goes down. In Lennox, we pay extra attention to eaves and rakes, because Santa Ana winds have a habit of lifting starter strips that weren’t nailed to spec.
Standing Seam Metal Roof in Lennox
Standing seam metal roof installation in Lennox runs between $22,000 and $34,000 for most single-family homes, and it’s the roof we recommend most often for Lennox homeowners who want something that outlasts the sun. The price reflects the material, the profile, the panel count, and the labor, which is more specialized than shingle work.
Lennox gets relentless UV exposure. A standing seam metal roof reflects more heat than asphalt, handles wind better, and carries a lifespan measured in decades, not years. For a Lennox homeowner who plans to stay, it’s a serious option.
Why Metal Works for Lennox Roofs
Standing seam panels have no exposed fasteners at the weather surface. That matters in Lennox because thermal expansion and contraction, driven by our hot afternoons and cool nights, is what eventually loosens screws and opens gaps on cheaper metal roofs. Standing seam lets the metal move without compromising the seal.
What to Expect From a Metal Installation
The process starts with the same tear-off and decking inspection as any shingle job. Then we set the underlayment, install the panels with a mechanical seamer, and flash every penetration to county code. It’s louder work during install, but it’s quiet money afterward: no shingle blow-off, no granule loss, no second roof in your lifetime.
Trusted Brands We Service in Lennox
We install GAF, Atlas, and Tamko shingle lines most often in Lennox, along with standing seam systems from manufacturers we trust for coastal-adjacent heat and wind. We keep common sealants, flashing materials, and fasteners stocked for Lennox jobs, which means a mid-project fix doesn’t stall your roof for days. Whatever brand you choose, the installation standard stays the same: written price, county permit, Threshold Verified crew, and a written guarantee on the work.
Common Roof Installation Problems We See in Lennox Homes
- Wood shake roofs with sun-baked gaps. Original shake roofs in Lennox dry out and shrink under decades of UV. The gaps let wind-driven rain soak the decking, and by the time you see a ceiling stain, the decking is often already rotting. We don’t roof over compromised decking. We replace it.
- Swamp cooler flashings gone bad. Many Lennox homes still carry old evaporative coolers, and most were flashed with whatever the original installer had on hand. The result is a slow, persistent leak around the penetration. We check coolers first on every Lennox leak call, and if you’re replacing the roof, we re-flash or remove the cooler properly.
- Santa Ana wind damage along eaves and rakes. Wind gusts in Lennox don’t announce themselves. We see shingles lifted along the windward rake, starter strips torn, and underlayment left exposed. When we install, we use the manufacturer’s high-wind nailing pattern as the baseline, not the exception.
- Flat roof ponding from clogged or undersized drains. Flat and low-slope roofs in Lennox, especially on mid-century apartments and additions, pond water after heavy rain. Ponding accelerates membrane failure. During installation we check slope, drainage, and overflow scuppers so water doesn’t sit and eat the membrane.
See the difference
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AfterPricing for Roof Installation in Lennox, CA
For a standard Lennox single-family home, expect $11,500 to $21,000 for a shingle roof and $22,000 to $34,000 for standing seam metal. Square count is the biggest driver: most Lennox homes run 18 to 28 squares, and material choice moves the number significantly within each range. Decking replacement, fascia repair, swamp cooler removal, and county-required upgrades all adjust the final figure, and every one of those gets written into your estimate before work starts.
We don’t give “ballpark” numbers and then surprise you later. Grant Whitlock’s standing instruction is a written line-item price before any work begins, fixed pricing with no change orders unless you approve them in writing first. Call (213) 521-8272 for a free estimate. The price you see is the price you approve, and the price you pay.
We Also Serve Cities Near Lennox
Our crews cover Lennox and the surrounding communities of Lennox, Los Angeles, Burbank, South Gate, and Lynwood. If you’re just outside Lennox proper and need roof installation with the same written-price, badge-at-the-door standard, call us and we’ll confirm coverage for your block.
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 Installation in Lennox
Lennox is unincorporated Los Angeles County, so your roof installation permit comes through LA County’s building department, not a city hall. That means county permit triggers and county inspections, which sometimes differ from what neighboring cities like Inglewood or Hawthorne require. We handle the paperwork, the scheduling, and the inspections as part of the job. Call (213) 521-8272 and we’ll tell you exactly which permits your Lennox roof triggers before anything gets torn off.
Old swamp coolers ruin Lennox roofs slowly, from the penetration outward. Most were flashed poorly decades ago, and every rain since has been working water into the decking around the unit. When we roof a Lennox home with a cooler, we either remove it and deck over the opening, or we re-flash it properly with a raised curb and new sealants. We check it first because it’s usually the source of the leak you’ve been chasing for years. Call us for an inspection and a written fix.
Standing seam metal lasts longest under Lennox conditions, with a realistic service life that beats shingles by two to three times. Its hidden fasteners and wind-resistant profile handle both the UV load and the gusts off the Santa Anas. If metal is outside your budget, a high-wind-rated architectural shingle from GAF or Atlas, installed with the manufacturer’s full nailing pattern, is a strong second choice. We’ll write both options up so you can compare.
Most Lennox single-family homes run between 18 and 28 squares, with ranch-style homes more often landing around 20 to 24. Square count drives material and labor cost, so getting it right matters. When we measure, we measure the actual roof surface, not the footprint of the house, because pitch and overhangs add real squares. Estimates are free and written, so you know your exact count and your exact price.
Flat and low-slope Lennox roofs don’t need ice and water shield the way a pitched roof in snow country does, but they do need proper waterproofing at every penetration and transition, and that’s where Lennox flat roofs usually fail. For low-slope applications we specify the right membrane, either TPO or torch-down, with the details done to county code. If you have a flat section on your Lennox roof, ask us about it during the estimate. The conversation could save you a leak in next winter’s first heavy rain.
Your Lennox Roof, Done Right
Roof installation in Lennox isn’t a mystery. It’s a series of decisions: material, tear-off, decking repairs, flashing details, permit path. We walk you through every one of them in writing. Your technician’s name and photo come to your phone before they arrive. They badge in at the door. The price is on paper before the first nail is driven.
Call (213) 521-8272 for a free roof installation estimate in Lennox. You’ll get a real number, a straight answer about your roof’s condition, and a written guarantee on the work we do.
Written by Grant Whitlock, Owner at Mercer Roofing Co Los Angeles, serving Lennox and surrounding communities since 2000.