If you’re pricing a roof replacement cost in Marietta, GA, the honest answer is: it depends on square footage, the roof system, and what’s underneath the old roof once we tear it off. Below are the general market ranges contractors in metro Atlanta are quoting right now, what pushes a job to the top or bottom of those ranges, what Cobb County expects on the permit side, and what it actually takes to get a number you can build a budget on.
These are widely-published metro Atlanta and Southeast market ranges, not a quote from us. Every roof is different, and the only way to get a real number is a walk of the roof.
Commercial Roof Replacement Cost in Marietta, GA
Most commercial buildings around Marietta are low-slope, so you’re looking at single-ply membrane, modified bitumen, or in some cases a metal retrofit. Pricing is quoted per square foot of roof area.
| System | General market range (installed) |
|---|---|
| TPO single-ply | $6.50 - $11.00 per sq ft |
| EPDM (rubber) | $6.00 - $10.00 per sq ft |
| Modified bitumen | $7.00 - $12.00 per sq ft |
| Standing seam metal, commercial | $9.00 - $16.00 per sq ft |
A 20,000 sq ft warehouse roof and a 20,000 sq ft office roof with a dozen HVAC curbs, skylights, and drains are not the same job, even at the same square footage. Penetrations, parapet walls, and drainage work drive the number more than the membrane itself does. If you own or manage more than one building, expect the per-building number to come down slightly once a contractor is mobilized across a portfolio rather than pricing each roof as a standalone trip.
Residential Roof Replacement Cost in Marietta, GA
Residential roofing is priced by the square, which is 100 sq ft of roof area.
- 3-tab asphalt shingle: roughly $350 - $500 per square
- Architectural (dimensional) shingle: roughly $450 - $650 per square
- Standing seam metal, residential: roughly $900 - $1,500 per square
A typical 2,200 sq ft Marietta home has somewhere around 20-24 squares of actual roof area once you account for pitch, so multiply accordingly. Steep pitches, multiple valleys, and cut-up rooflines with lots of dormers push labor time up regardless of material. Asphalt shingle roofs generally last 20-25 years, TPO and EPDM membranes 15-20 years, and standing seam metal 40-70 years, so age alone is often the first sign a home is closer to a replacement number than a repair number.
What Pushes a Job to the Top or Bottom of the Range
- Tear-off scope. One layer of old shingles or membrane costs less to remove than two or three. Georgia code generally caps residential roofs at two layers, so a third layer means a full tear-off is required either way.
- Deck condition. Rotten decking found once the old roof comes off gets replaced at a per-sheet rate, and you won’t know the real number until it’s uncovered.
- Access and height. Steep pitch, tall commercial parapets, or a building surrounded by equipment and landscaping all slow the crew down.
- Insulation and code upgrades. Commercial reroofs often trigger current energy code minimums for insulation R-value, which adds cost the old roof never had.
- Drainage. Low-slope commercial roofs with ponding water history may need tapered insulation to redirect water to the drains, which is a design and material cost on top of the membrane.
- Building size. Larger roofs generally have a lower cost per square foot because mobilization, equipment, and crew setup get spread across more area.
Permits and Code in Cobb County
Marietta falls under Cobb County’s building code jurisdiction, and most full tear-off reroofs, commercial or residential, require a building permit and a final inspection before the job is closed out. A straightforward recover on a residential roof may not need one depending on scope, but a licensed contractor should be pulling the permit as part of the job rather than leaving that step to the homeowner. Skipping the permit doesn’t just risk a fine — it can also void the manufacturer’s warranty and become a disclosure problem when the property sells. Ask any contractor bidding your roof whether the permit is included in their number before you compare quotes.
When to Repair vs Replace
Not every roof problem is a replacement. A single leak around a boot or flashing, a handful of missing shingles after wind, or ponding water on a small section of a commercial membrane can often be repaired for a few hundred to a few thousand dollars. Replacement becomes the right call when the roof is past its expected lifespan, when repairs are recurring in different spots rather than the same one, when granule loss or membrane brittleness shows up across the whole surface rather than one area, or when a Haag-certified inspection turns up hail or wind damage extensive enough that an insurance claim covers most of the cost anyway. A real inspection, not a guess from the ground, is what separates those two paths.
What You’re Actually Paying For
A roof replacement isn’t just membrane or shingles on a truck. It includes a Haag-certified inspection to document existing condition, tear-off and deck inspection, new underlayment or insulation, installation with GAF and Mule-Hide certified systems, permitting, and warranty registration at the end. That warranty is usually two layers: a manufacturer material warranty from GAF or Mule-Hide, and a separate workmanship warranty from whoever installed it, covering labor if something fails that isn’t a material defect. Skipping steps to hit a lower number usually shows up as a leak in year three, not year one, and a shortcut roof can also mean no manufacturer warranty at all if it wasn’t installed by a certified crew.
If a storm is the reason you’re replacing the roof rather than age or wear, the cost conversation changes, because insurance may be covering some or all of it. Our storm restoration team documents damage for the adjuster before any tear-off starts, which matters for what gets approved.
Getting an Accurate Number for Your Roof
Ranges are useful for budgeting, not for writing a check. Integrity CRR is a general contractor, service-disabled veteran-owned, licensed in Georgia (#GCCO009212), and we manage the roofing subcontractors on every job with a principal on site for the walk and the final inspection. That’s true whether it’s a single commercial building or a portfolio of properties. Read more about how we manage roofing projects, see examples of finished work in our project gallery, or check our broader commercial general contracting services if the roof is part of a larger build-out. See who we are before you call.
We work throughout the metro area, including Marietta, Kennesaw, and Smyrna. If you want a real number instead of a range, contact us or call (833) 423-6255 and we’ll get a principal on your roof.
Frequently Asked Questions
How much does a roof replacement cost in Marietta, GA?
Commercial single-ply roofs generally run $6.50 to $12.00 per square foot depending on the system and complexity, while residential shingle roofs run roughly $350 to $650 per square for asphalt and $900 to $1,500 per square for metal. These are general metro Atlanta market ranges, and an on-site walk is required for an actual number.
Does insurance cover a roof replacement if the damage is from a storm?
It can, if the damage is documented as storm-related rather than wear and age. An adjuster typically inspects the roof and approves a scope of work, which is a different process than a standard replacement. Our storm restoration team documents the damage before any tear-off starts.
How long does a roof replacement take?
A typical residential reroof takes 1 to 3 days depending on size and weather. Commercial low-slope roofs vary widely, from a few days for a small building to several weeks for a large warehouse or when the roof is done in phases to keep the building operational.
What’s the difference between a recover and a full tear-off?
A recover installs new roofing over the existing layer and costs less, but it’s only an option when the deck and existing roof are in sound condition and code allows it. A full tear-off removes everything down to the deck, costs more, but is the only way to find and fix deck rot or drainage problems underneath.
Is a permit required to replace a roof in Marietta, GA?
Most full tear-off reroofs in Cobb County require a building permit and a final inspection, whether the building is commercial or residential. A contractor should include pulling the permit as part of their scope, not leave it to the property owner. Skipping it can void the manufacturer’s warranty on top of the code risk.
How long should a roof last before it needs replacing?
Asphalt shingle roofs generally last 20-25 years, commercial TPO and EPDM membranes 15-20 years, and standing seam metal 40-70 years. Those are lifespans under normal wear, not storm damage, so a roof well inside its expected life can still need full replacement after a hail or wind event.