Free roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
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AfterIKO Roofing Company in Los Angeles: What to Know First
Mercer Roofing provides independent IKO roof repair and replacement across Los Angeles, with most repair jobs completed in a single visit and full replacements typically finished within two to five days depending on roof size and slope. We are not an IKO dealer or authorized installer, but we work on IKO roofs every week, and we quote every job with a written price before a single nail goes in. If you own a home with IKO shingles and you’re seeing granule loss, curling, or leaks, call us at (743) 200-8347 and we’ll tell you honestly whether it’s a repair or a replacement.
This page is for Los Angeles homeowners who already have IKO roofing and need someone who actually knows the product, not a contractor who treats every shingle the same. We’ll walk you through how IKO fails, what it costs to fix, and why our technicians show up with a photo ID badge and a written guarantee in hand.
Key Takeaways:
- We repair and replace IKO roofs throughout Los Angeles, from San Pedro to Sylmar and everywhere between.
- Written price before any work starts, every time. Always.
- Every repair comes with a written 365-day guarantee, and a free second visit if the repair doesn’t hold.
- We also service GAF, Owens Corning, and CertainTeed roofs, so if a section needs matching or a mixed-brand roof needs attention, we handle it in one trip.
How IKO Products Fail – and How We Fix Them
IKO makes a solid shingle, but Los Angeles has a way of finding the weak points in any roof. Here’s what we actually see on IKO jobs across the city, and what we do about it.
- Cambridge granule loss on south-facing slopes. IKO’s Cambridge line is common in Los Angeles, and on roofs that take full afternoon sun, the ceramic granules start wearing off faster than they do on east-facing slopes. Granule loss exposes the asphalt underneath, which then bakes and cracks in our dry heat. We clean the affected area, check how deep the wear goes, and either repair the section or talk straight with you about whether the roof has hit its realistic lifespan.
- Nordic and Dynasty seal strip failures in coastal air. IKO’s laminate lines rely on heat-activated seal strips to bond overlapping shingles. In beach-adjacent neighborhoods like Playa del Rey or San Pedro, morning marine layer keeps shingles cool and damp longer than they do inland, which can delay or weaken that bond. A strong Santa Ana wind event then starts lifting shingles that never fully sealed. We re-seal where it’s viable, and replace where it isn’t.
- Crowne Slate and Royal Estate heavy-laminate nail-line misalignment. These thicker architectural shingles have a narrower nail zone, and we regularly find roofs where the original installer nailed high, outside the reinforcement strip. Result: shingles that hold for a few years, then start sliding. Our fix involves removing the loose course, checking the decking underneath, and reinstalling to IKO’s nail-line spec, not guessing.
- Valley and flashing leaks on older IKO installs. Many Los Angeles IKO roofs from the early 2000s were installed with standard metal flashing that has since corroded or pulled away at the seams. Water gets in at the valleys before the shingles themselves fail. We don’t just patch the flashing. We pull the affected shingles, inspect the underlayment below, replace the flashing with new metal, and reseal the valley so water moves off the roof instead of into it.
- Ventilation-related premature aging on IKO Marathon shingles. IKO Marathon is a tougher shingle, but no shingle survives a poorly vented attic in Los Angeles summers. When we see Marathon shingles cracking at the edges at year eight or ten, the shingle is often not the root cause. It’s trapped heat and moisture in the attic cooking the roof from underneath. We fix the visible shingle damage, then tell you honestly whether you need additional intake or exhaust ventilation. A replacement shingle on a suffocated attic is just a temporary patch.
Our IKO Roofing Company Process
Here’s how an IKO roofing job goes from the first call to the final walkthrough with Mercer Roofing.
- 1
You call (743) 200-8347. A live person answers. Not a voicemail, not a call-back form. We ask what you’re seeing, what the roof is doing, and whether there’s water inside the house.
- 2
We send a technician with a name and a face. Before they arrive, you get their name and photo. When they knock, they’re in a clean Mercer uniform and they’ll present a photo ID badge at the door. Background-checked, every visit. It’s the first thing we tell every homeowner because it’s the first thing most roofing companies won’t do.
- 3
The roof gets read, not just looked at. Our tech walks every slope, checks the flashing, the valleys, the underlayment where accessible, and the attic ventilation. They look for IKO-specific issues like the ones above, not a generic “it’s old” answer.
- 4
You get a written price before anything happens. We tell you what we found, what we recommend, what it costs, and what we’d do if we were in your position. If it’s a repair and that repair fails within 365 days, we come back out at no charge. That guarantee is included in the written price, every time.
- 5
The work happens on schedule. For a repair, it’s usually the same visit. For a replacement, we protect the property, work efficiently, and keep the site clean at the end of every day.
- 6
We leave you with a written guarantee and a roof that’s done. If you never think about your roof again, that’s the best outcome. Everything we fixed or installed is covered in writing.
What IKO Roofing Company Costs in Los Angeles
Here are honest price ranges for the most common IKO roofing jobs we do in Los Angeles. These are not quotes, but they will get you in the right frame of mind before you call.
| Job Type | Typical Los Angeles Price Range |
|---|---|
| Small IKO shingle repair (patch, reseal, or isolated replacement) | $350 – $900 |
| Valley or flashing repair on IKO roof | $500 – $1,500 |
| Full IKO shingle replacement (1,200 sq ft roof) | $8,500 – $14,000 |
| Full IKO shingle replacement (2,500 sq ft roof) | $16,000 – $26,000 |
| Attic ventilation upgrade during IKO replacement | $1,200 – $3,800 |
What moves the price up or down: roof pitch (steeper costs more), number of valleys and penetrations, the condition of the decking underneath, and whether you need a full tear-off or a overlay (we’ll recommend the tear-off in most cases, and we’ll tell you if an overlay is a mistake). Every estimate is a written price, locked before we start. Call (743) 200-8347 and we’ll tell you exactly where your job lands.
Why Los Angeles Homeowners Call Mercer Roofing for IKO Work
Most Los Angeles roofing companies can put a shingle on a roof. Few can explain the difference between IKO Cambridge granule wear on a south slope and Dynasty seal failure near the coast. We can, because we work on these roofs every week. Grant Whitlock, the owner of Mercer Roofing, grew up in Sylmar and learned the structural side of the trade at L.A. Trade-Technical College, so he reads a roof the way a mechanic reads an engine, not the way a salesman reads a spec sheet.
We also carry backup when you need it. If you have IKO shingles on part of the house and GAF, Owens Corning, or CertainTeed on another section, we service all of it in one visit. And every repair, every replacement, starts with a written price and ends with a written guarantee. A roof that’s doing its job is one you never think about. Let’s keep it that way.
FAQs
Generally no. IKO’s material warranty covers manufacturing defects in the shingles themselves, not workmanship, and it does not extend to labor performed by independent companies. As an independent IKO service provider, we are not authorized by IKO, but our repairs are covered by our own written 365-day guarantee, which covers our workmanship regardless of what IKO’s warranty does or doesn’t do. Call (743) 200-8347 and we’ll walk through what your specific IKO warranty actually covers.
In most cases, yes. IKO has kept its core colorways, like Weatherwood, Dual Brown, and Driftwood, fairly stable over the years, and we can usually match them with current production shingles. Older or discontinued colors may require blending or a selective replacement on a less visible slope. We’ll show you the match before we install it.
For active leaks or visible shingle damage, we typically schedule within a few days of your call, and a live person answers the phone 24/7 to get you on the calendar. We don’t use call-backs or hold music as a front door. Call (743) 200-8347 and tell us what’s happening, and we’ll give you a real answer about when a tech can be there.
If the roof is under 10 years old and the damage is isolated, a repair often makes sense. If you’re seeing widespread granule loss, shingles lifting across multiple slopes, or the roof is past year 15, a replacement is probably the better value, especially if the decking underneath is showing age. We’ll tell you which one you actually need, even when the honest answer means we do less work.
No. The written price you approve before work begins is the price you pay, unless you ask us to do something outside that scope, in which case we’ll put that in writing too before any new work is authorized. No surprises on the invoice, ever.
Written by Grant Whitlock, Owner, Mercer Roofing at Mercer Roofing, serving Los Angeles and nearby areas.