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Flat & low-slopeFree roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
Tamko Roofing Company in Los Angeles: What to Know First
We service and install Tamko roofing products across Los Angeles as an independent contractor, not a Tamko subsidiary. Most repairs take one visit, and every job starts with a written price before we touch your roof. You won’t find prices posted on Tamko’s site, which is exactly why we publish ours below.
If you own a Tamko roof in Los Angeles and need a straight answer about whether it’s repairable, call (213) 521-8272. We’ll talk you through what you’re seeing before we ever schedule a visit.
How Tamko Products Fail – and How We Fix Them
- Heritage and Heritage Premium architectural shingles losing granules faster than expected. Los Angeles sun works differently than the Pacific Northwest where these lines were first tested. UV exposure combined with Santa Ana winds accelerates granule loss on sun-facing slopes. You’ll see granules in the gutter and a patchy sheen on the south and west roof faces. Our fix: we assess the deck and underlayment condition, then replace the failing shingles or the affected slope using a matched Tamko color, or recommend a more sun-tolerant replacement if the structure warrants it.
- Tamko MetalWorks and Lamarite panels with fastener back-out on steep hillside roofs. In neighborhoods like Silver Lake and Echo Park, thermal expansion on metal roofing is brutal. The panels expand and contract daily, and improperly installed fasteners work themselves loose. Owners hear a popping or creaking sound in the late afternoon when the roof cools. We find the backed-out fasteners, inspect the washers, and resecure with the correct TPO or EPDM washers so the panel stays sealed.
- TAM-RAIL and underlayment failures on torch-down flat roofs in the Valley. Tamko’s modified bitumen systems are common on flat roofs in Van Nuys, North Hollywood, and Reseda. The weak point is usually not the membrane itself but the seams where TAM-RAIL meets parapet walls or AC curbs. Los Angeles heat softens the seam sealant, then seasonal rain finds a hairline gap. We pull the old TAM-RAIL, clean the substrate, and reseat it with a fresh torch-down bond, then check every seam within a three-foot radius.
- Heritage VT and Proline shingles curling at the eaves on older two-story homes. Curling at the roofline is rarely a shingle defect. It’s almost always a ventilation issue, the attic is trapping heat, and the bottom course takes the brunt. In LA’s Mediterranean climate, attics get shockingly hot by July. We don’t just replace curled shingles. We check the intake ventilation at the soffits and add ventilation if airflow is blocked. Then we replace the damaged course with the same Tamko line.
- FlashShield and Youngstown flashing interface failures around chimneys and skylights. Tamko’s flashing products are solid, but the failure point is where they meet a chimney or a skylight curb, especially on older LA homes where the chimney masonry has shifted after years of seismic settling. We see rust stains or water marks inside the attic near the chimney chase. We remove the old flashing, inspect the masonry, and reset the flashing with new sealant and proper counterflashing so water can’t get behind it.
Styles & brands we work with






Our Tamko Roofing Company Process
- 1
You call. A live person answers at (213) 521-8272. Not a voicemail. Not a call-back form. You describe what you’re seeing, and we’ll give you a straight read on whether it sounds urgent.
- 2
We send you our technician’s name and photo before they arrive. That’s a non-negotiable part of how Mercer Roofing works. You’ll know exactly who is at your door, and they’ll present a photo ID badge before stepping foot on your property.
- 3
We diagnose in person. Our technician walks the roof, takes photos, and inspects the specific Tamko product you have. For example, if you have Heritage shingles, we’re checking granule retention, nail placement, and seal strip adhesion. If it’s a flat torch-down, we’re looking at seams and TAM-RAIL joints.
- 4
You get a written price before any work starts. No verbal estimates that later become different invoices. The price we show you is the price you pay, with no change orders unless you approve them in writing first.
- 5
We fix it and test it. Repairs are made with Tamko-approved methods, or quality aftermarket components when OEM parts are discontinued. We test water flow, check for proper adhesion, and leave the work area clean.
- 6
You get a written guarantee on every repair. Not a handshake. A piece of paper that says if the repair fails within 365 days, we come back and make it right at no charge.
See the difference
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After
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AfterWhat Tamko Roofing Company Costs in Los Angeles
Here’s what you can expect to pay for common Tamko scenarios in the LA market. These are real ranges based on the work we do across the basin, not national averages that don’t reflect local labor costs.
- Tamko shingle repair (isolated leak or missing shingle): $350 – $650
- Granule-loss assessment and partial slope replacement: $1,800 – $4,200
- Flat roof seam repair on a Tamko torch-down system: $500 – $1,200
- Flashing reset around chimney or skylight: $450 – $950
- Full Tamko re-roof on a 1,500 sq ft home: $12,000 – $22,000 depending on tear-off, decking condition, and underlayment choice
What moves the price: roof pitch (a hillside bungalow in Mount Washington costs more than a flat roof in Mid-City), number of layers being torn off, decking that’s rotted from years of undetected leaks, and whether the existing ventilation needs reworking. Call (213) 521-8272 and we’ll give you an exact quote. Estimates are free, and you won’t get pressure to expand the scope.
Why Los Angeles Homeowners Call Mercer Roofing Co Los Angeles for Tamko Work
Because when we say someone is coming to your house, you know who it is before they ring the bell. Every technician we dispatch is background-checked, identity-verified, and badged under the Threshold Verified standard. They show up in a clean uniform with a photo ID. That’s not a marketing line, it’s how we’ve run every job since Mercer Roofing was founded in 2000 as part of the Threshold Group family.
Every repair carries our 365-Day Done Right Promise in writing. If the fix doesn’t hold within a year, we return and make it right. And if you ever decide Tamko isn’t the right product for your next roof, we also install and service GAF, Owens Corning, and CertainTeed. You get the brand that fits your home, not the brand we happen to prefer.
Grant Whitlock, who owns Mercer Roofing Co Los Angeles, grew up in Eagle Rock and trained at Los Angeles Trade-Technical College. He’s spent the better part of two decades on roofs across the LA basin, from flat torch-down decks in the Valley to clay tile on Silver Lake hillsides. He’d rather talk you out of a roof you don’t need than sell you one.
A roof should be the last thing on your mind. Let’s keep it that way. Call (213) 521-8272.
FAQs
No. We’re an independent Tamko service provider. We install and repair Tamko products using manufacturer-recognized methods, but we’re not a Tamko subsidiary or authorized warranty contractor. That means we can give you an honest read on whether a repair is the right call or a re-roof makes more sense without having to protect a manufacturer’s interests.
It depends on what’s wrong and when your roof was installed. Tamko’s material warranties typically cover manufacturing defects, not installation issues or weather damage. If a repair involves replacing individual shingles, warranty coverage on the remaining shingles generally stays intact. If you’re unsure, call us and we’ll help you figure out what your warranty actually covers before you spend a dollar.
We typically schedule diagnostics within a few days across Los Angeles. If you have active water coming through the ceiling, tell the person who answers the phone, and we’ll prioritize your call. We don’t promise same-day service on every call because we don’t want to overpromise, but we will give you a straight answer about when we can be there.
The short answer: if the decking and underlayment are still solid and the shingles are under 15 years old, a repair usually makes more sense. If you’re seeing multiple leaks, widespread granule loss, or curling on more than one slope, re-roofing starts to be the smarter money. We’ll show you photos of what we see and let you decide. We won’t push a full replacement unless the roof genuinely needs it, and the price will be in writing either way.
Yes. Tamko’s modified bitumen and TAM-RAIL systems are common on flat roofs in the Valley and parts of West LA, and we repair and replace them regularly. The most common issue on flat Tamko roofs in Los Angeles is seam separation at parapet walls and AC curbs, which we can usually fix in a single visit. Call (213) 521-8272 for a free estimate on flat roof repair.
Written by Grant Whitlock, Owner, Mercer Roofing Co at Mercer Roofing Co Los Angeles, serving Los Angeles and nearby areas.