A Mercer company - serving Miami, FL

Owens Corning Roofing Company Nationwide

Owens CorningOwens Corning
Architectural shinglesArchitectural shingles
Metal roofingMetal roofing
Tile roofingTile roofing
GAFGAF
Flat & low-slopeFlat & low-slope
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Free roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation

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Owens Corning Roofing Company in Miami: What to Know First

Owens Corning roof repair in Miami typically runs $425 to $2,400 depending on whether we’re replacing a few shingles or rebuilding the flashing system around a chimney. Most jobs are completed in one visit, with a written price in your hand before any work starts. We’re an independent Owens Corning service provider, not a factory warranty center, which means we tell you plainly when a repair makes sense and when the roof has hit the end of its useful life.

Call (850) 753-2996

This page is for Miami homeowners with Owens Corning shingles who want to know what’s wrong, what it costs, and who’s walking up the driveway. If your Owens Corning roof is leaking, lifting, or losing granules, call (850) 753-2996 for a straight answer.

How Owens Corning Products Fail – and How We Fix Them

Owens Corning makes solid shingles, but Miami’s climate works against every roof in specific, predictable ways. Here’s what we actually see on Owens Corning jobs in this city.

  • Duration Series granule loss near roof valleys. The Duration line’s SureNail strip holds well, but the heavy granule coating wears faster where rainwater channels through valleys at high speed. You’ll see dark patches and grit in the gutters within 12 to 15 years. Our fix is selective valley shingle replacement and a check of the valley metal underneath, which is often the real culprit.
  • Oakridge series lifting at the eaves. On older Oakridge installs, we regularly find that the starter strip wasn’t nailed within the nail line, so the first course loses its grip and wind gets under it. In neighborhoods like Kendall and Cutler Bay, we resecure the eave edge and replace any shingles with stripped nail holes.
  • Sealant strip failure on south-facing slopes. Owens Corning’s thermal sealant activates properly, but constant direct sun on a south-facing Miami roof can cure it past its useful flexibility in strong, sustained UV. The shingles hold but won’t self-seal. We re-seal under-lifted tabs with a compatible adhesive and inspect for anything that’s gone further.
  • Ventilation-related curling on Duration and Supreme lines. Curling at the edges isn’t always about the shingle. Many Miami attics run 140-plus degrees in August, and when intake ventilation is blocked by insulation or stucco, the heat pushes upward and warps the shingle. We address the ventilation first, then replace the damaged sections. Fixing only the shingle would fail again within a season.
  • Impact cracking on brittle legacy lines. Owens Corning’s older fiberglass lines like the original Supreme became brittle after years of Miami heat and occasional hail. Branches, foot traffic, or even a strong storm can crack them. We replace these with a modern Owens Corning product or a comparable GAF or CertainTeed line if the whole roof needs doing, which is usually the case when brittleness is roof-wide.
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Styles & brands we work with

Architectural shingles
Architectural shingles
Metal roofing
Metal roofing
Tile roofing
Tile roofing
GAF
GAF
Owens Corning
Owens Corning
Flat & low-slope
Flat & low-slope

Our Owens Corning Roofing Company Process

Every Owens Corning job through Mercer Roofing Co Miami follows the same steps, whether it’s a small repair or a full re-roof.

  1. 1
    Call and same-site diagnosis. You call (850) 753-2996, a live person answers, and we schedule a technician. You’ll receive the tech’s name and photo before they arrive. When they knock, they’ll be in a marked uniform and show you a photo ID badge.
  2. 2
    On-roof inspection. The technician walks the roof, not just the area you flagged. We check flashing, pipe boots, ridge vents, and the decking underneath the problem spot. Grant Whitlock personally attends every inspection and walks the roof himself.
  3. 3
    Written price with a plain-English breakdown. Before anything is touched, you get a written line-item price covering labor, materials, and any decking or underlayment work. No work starts without your sign-off.
  4. 4
    Parts decision: OEM or quality aftermarket. If Owens Corning shingles are available locally, we use them. If a specific color is discontinued, we match the nearest current Owens Corning line and tell you exactly what we’re installing. No surprises, no “close enough” without your approval.
  5. 5
    Repair or replacement, done clean. We seal every penetration, replace every damaged section, and haul away all debris. The yard looks like we were never there, except the roof is fixed.
  6. 6
    The 365-day test period. Every job includes our 365-Day Done Right Promise. If the work isn’t right within a year, we make it right, at no additional charge. In writing.
Before & after

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Before - Recent ProjectBeforeAfter - Recent ProjectAfter
Recent Project
Before - Full RestorationBeforeAfter - Full RestorationAfter
Full Restoration
Before - Complete UpgradeBeforeAfter - Complete UpgradeAfter
Complete Upgrade

What Owens Corning Roofing Company Costs in Miami

Here’s what we charge for common Owens Corning scenarios in Miami, with real numbers.

  • Small shingle replacement (3 – 10 shingles): $425 – $700
  • Valley flashing repair or replacement: $650 – $1,400
  • Pipe boot and vent flashing replacement: $350 – $600 per penetration
  • Eave and rake edge resecuring (up to 50 linear feet): $800 – $1,800
  • Sectional re-roof (single slope, full strip and replace): $3,500 – $7,200

What moves the price: slope and height, how many layers we’re removing, whether decking or underlayment needs replacing, and whether we’re matching an active color or sourcing a discontinued one. You’ll get the exact number in writing before work begins. Call (850) 753-2996 for a free estimate.

Why Miami Homeowners Call Mercer Roofing Co Miami for Owens Corning Work

Miami has hundreds of roofing companies. Most of them will send someone to your door. The difference with us is you know who that someone is before they knock. We send the technician’s name and photo ahead of every visit, and they badged-in with a photo ID at the door. That’s the Threshold Standard, and every Mercer Roofing Co Miami technician is held to it, with every technician background-checked and identity-verified before they step onto your property.

We’re not a pop-up storm chaser. We’ve been roofing Miami homes since 2000, and Grant Whitlock has spent the better part of three decades putting roofs on everything from Coral Gables bungalows to flat-top commercial buildings near Brickell. He’s walked enough Miami hurricane seasons to know exactly where a roof fails first. We also work with GAF and CertainTeed, so if your Owens Corning roof needs a full replacement and another brand is the better value, we’ll tell you straight. A roof shouldn’t be something you worry about – that’s our job.

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