Commercial Roof Repairs in Harahan, LA
Big Easy Roofing repairs commercial and low slope roofs across Harahan and east bank Jefferson Parish. On a Harahan-address commercial building the first question is not the defect, it is the office. ZIP 70123 covers both the City limits and the unincorporated commercial belt around Elmwood, and the two permit routes run to different offices with different fee schedules.
Harahan commercial roof repairs at a glance
A commercial roof is normally low slope, which changes what fails and which code governs it. Since 2025 a commercial re roof also needs its own permit and inspection under Louisiana state law, and which office issues it depends on where the building actually sits inside ZIP 70123.
What we repair
Single ply TPO and EPDM, modified bitumen, built up gravel systems, and standing seam or R panel metal. Repairs cover seams and laps, penetrations and curbs, drains and scuppers, parapet and coping details, and storm damage. Call Big Easy Roofing on (504) 800-8196 and we will survey the assembly before quoting.
Which office covers you
ZIP 70123 spans the Harahan city limits AND the unincorporated Elmwood and River Ridge areas of Jefferson Parish. The commercial belt sits largely in the unincorporated part, so most 70123 commercial buildings go to Jefferson Parish rather than the City of Harahan Regulatory Department on (504) 737-6765. The boundary is verified at the specific address, not at the ZIP.
Which code applies
Louisiana R.S. 37:3737(I)(1) sends buildings other than one and two family dwellings to International Building Code Chapter 15, as adopted by the state. Only (I)(2), the houses, goes to the residential code. Louisiana is on the 2021 editions with state amendments.
No storefront preservation rule
The City of Harahan has no downtown preservation review board on record, so a repair on a Harahan storefront is not caught by the kind of appearance approval that some Louisiana downtowns require. What decides the permit route here is the boundary between City and Parish, not the visibility of the roof.
The survey
We identify the membrane and its age, walk the drainage to find where water actually stands, check every penetration and curb, and look for wet insulation below the membrane. A repair over saturated insulation is likely to fail again, so it gets found before, not after.
Warranty
Our workmanship warranty covers the repair itself. Where the repair is on a system already carrying a manufacturer warranty, we work to that manufacturer's repair requirements so nothing on the existing warranty is voided.
A low slope commercial roof fails in a small number of places. Seams open, penetrations lose their seal, curbs lift where the vibration from rooftop equipment works at them, drains and scuppers get blocked and hold water, and parapet and coping details work loose against wind. What decides whether a repair holds is not usually the patch itself, it is whether the insulation under the membrane has stayed dry, because a wet insulation layer defeats any repair above it.
The other thing to settle before a repair is scoped is which office permits and inspects it. Since Act 239 of 2025 came in, a commercial re roof in Louisiana is a permitted job under R.S. 37:3737(I)(1) and the code the office inspects against is IBC Chapter 15. On a Harahan-address building that office is more often Jefferson Parish than the City of Harahan, because ZIP 70123 covers both the City limits and a commercial belt in the unincorporated part of the parish, and the boundary decides the route rather than the mailing address.
Low slope systems and what fails on each
Four systems account for the bulk of the low slope commercial roofing in this market: TPO, EPDM, modified bitumen and standing seam metal. What fails on each is different enough that the repair approach follows the assembly rather than the age of the roof, and the survey identifies which system is in front of us before anything is priced.
| System | What we usually see | Typical failure mode | Repair approach |
|---|---|---|---|
| TPO single ply | Large open commercial roofs | Seam separation, punctures at penetrations, membrane shrinkage at edges | Weld a new seam or a patch, replace insulation under any wet area, reflash penetrations against the manufacturer detail |
| EPDM rubber | Simpler roofs and older commercial buildings | Seam adhesive failure and shrinkage over time, punctures | Cover strip a failed seam, replace deteriorated flashing, patch on clean substrate with the manufacturer adhesive |
| Modified bitumen | Smaller roofs and complex detailing | Alligatoring of the surface, ply separation, blistering, granule loss | Cut out failed area, prime and torch or self-adhere a new ply, replace granule surface where UV protection has gone |
| Standing seam metal | Sloped commercial roofs and rooftop metal | Fastener corrosion at concealed clips, seam separation, coating failure at cut edges | Replace fasteners on their own schedule, reseal seams, address coating where cut edges have started to fail |
The highlighted row is the commonest low slope system on large open commercial roofs generally, and the one whose seam and penetration detail is the most sensitive to how the repair is executed. On any of the four, the question below the visible defect is whether the insulation under it is still dry, and that gets sampled at the survey rather than assumed. Call (504) 800-8196 and we will survey the assembly and put the scope in writing.
Permit routing on a 70123 commercial building
ZIP 70123 covers both incorporated Harahan and a commercial belt in unincorporated Jefferson Parish. The boundary determines the permit route, and getting it right at the address before anything is filed avoids two calls to two offices that ought to have been one.
Inside the Harahan city limits
For an address inside the Harahan city limits, the City of Harahan Regulatory Department on (504) 737-6765 at 6437 Jefferson Hwy handles the commercial permit and inspection. The Department confirms the current application route on request, and we make the confirming call as part of the survey.
In unincorporated Jefferson Parish
For an address in the unincorporated part of the parish, including most of the Elmwood commercial corridor and much of River Ridge, the Jefferson Parish permits office handles the commercial permit through its own portal. The Parish route uses its general commercial schedule rather than a roofing line.
Which code applies
Under R.S. 37:3737(I)(1), non-dwelling buildings are routed to International Building Code Chapter 15 as adopted with Louisiana amendments. Louisiana is on the 2021 editions.
Either office may accept photographs
The statute allows a code enforcement officer to accept location verified geotagged photographs or video for roofing inspections. Whether the office handling your permit takes that up on a given job is settled at the survey rather than assumed.
Why the address matters more than the ZIP
A postal ZIP is a delivery boundary, not a jurisdiction boundary. On 70123 the two things do not line up, so a building whose mail is Harahan may be physically in unincorporated Jefferson Parish, and the permit and code enforcement route follows the physical location.
The cheap version of getting this right is to verify the boundary at the survey rather than at the pre-permit meeting. Filing at the wrong office costs a week; filing at the right office because we checked the boundary first costs nothing.
What the permit file needs to contain
The office issues the permit against the scope, so a written specification that reads to IBC Chapter 15 rather than to a plan is what the inspector will actually work from. We write the scope to name the system, the insulation, any drainage adjustments and the penetration details, and we build the photographic record in the R.S. 37:3737(H) geotag format so it sits in the file the way the code allows.
Big Easy Roofing Process
Four steps, and the boundary and the code are settled before the scope, because both of them can change the paperwork on a job that is otherwise identical from the roof.
Verify the boundary and the office
The specific address is checked against the City limits, and the permit route is confirmed with the office that covers it before anything else is discussed. On a 70123 commercial building this usually means the Jefferson Parish route rather than the City, but not always.
Survey the assembly
Membrane identified, drainage walked, penetrations recorded, insulation checked for saturation where the survey suggests it is worth doing. The failure and the cause are separated before the repair is scoped.
Written scope to IBC Chapter 15
The repair scope is written to the code the office inspects against, with the system named, the detail matched to the manufacturer requirements where the roof already carries a system warranty, and any documentation cost named on the line.
Execute, inspect, hand over the file
The repair is executed, the inspection happens at the stage the office requires, and you receive the permit file with the inspection sign off and any manufacturer paperwork required to keep the existing system warranty intact. Call (504) 800-8196 to book the survey.
Everything else we do in Harahan
The rest of the Big Easy Roofing services available in Harahan, each with its own page, crew and written scope. Where a commercial roof is holding water after a repair, a coating or a full re roof is usually the next thing worth pricing, so ask us to compare the two on the same visit alongside the commercial inspections page.

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Read MoreHarahan Commercial Roof Repairs FAQs
Which commercial roofs we repair in Harahan, how the permit route is settled on a 70123 building, and why the boundary is what matters.
Topic
Question not here?
Tell us the address and the roof system, and we will survey the assembly and put the repair scope in writing. No charge and no obligation.
Call (504) 800-8196What kind of commercial roofs do you repair in Harahan
Low slope single ply, TPO and EPDM, modified bitumen and built up gravel systems, and sloped standing seam and R panel metal. Repairs cover seams, penetrations and curbs, drains and scuppers, parapets, and storm damage. The scope of any repair follows a survey rather than a photograph.
What is the difference between a commercial and a residential roof repair
The assembly is different (low slope commercial, sloped covering residential), the code is different (IBC Chapter 15 for commercial under R.S. 37:3737(I)(1) as against the IRC for houses), and the permit route can be different too. On a Harahan-address commercial building the permit is more often Jefferson Parish than City of Harahan, because the commercial belt sits in the unincorporated part of ZIP 70123.
Does a commercial roof repair need a permit in Harahan
A commercial reroof does, under Louisiana R.S. 37:3737(I)(1). A localised repair usually does not, though the office confirms the position based on the scope. Which office covers a given building depends on whether the address sits inside the Harahan city limits or in the unincorporated part of Jefferson Parish.
How do I know if my building is in the City or the Parish
The specific address is checked against the City limits rather than against the ZIP. A Harahan mailing address can be in either the City proper or the unincorporated part of Jefferson Parish, because ZIP 70123 covers both. The commercial corridor around Elmwood is almost entirely unincorporated, so most 70123 commercial buildings file with the Parish rather than the City.
What code applies to a commercial roof repair here
International Building Code Chapter 15, as adopted by Louisiana with state amendments. Louisiana is on the 2021 editions. The state statute directing non-dwelling buildings to IBC is R.S. 37:3737(I)(1), added by Act 239 of 2025 and recodified by Act 881 of 2026.
Does Harahan run a downtown preservation review for commercial buildings
Not on our record. Unlike some Louisiana downtowns, the City of Harahan does not run a preservation review board with an appearance approval rule that would reach a storefront on a commercial reroof. The permit question here is about the boundary between City and Parish, not the visibility of the roof from the street.
What is the survey looking for
The membrane and its age, drainage patterns and where water actually stands, penetration details, and the moisture state of the insulation under the membrane. That last one is what usually decides whether a repair holds. A dry patch over wet insulation is a repair with a date on it.
Can you repair a roof that is under an existing warranty
Usually yes, but the manufacturer requires the repair to be done to its own detailing rules and by an approved installer if the existing system warranty is to stay intact. We work to those requirements where the roof already carries a warranty, and we tell you in writing what the constraints are before the work starts.
How long does a commercial roof repair take
A single visit for a scoped defect, longer where an area of wet insulation has to be cut out and replaced before the membrane is restored. The survey names both the duration and the tenant coordination in advance, so a scheduled operation is not surprised by the work.
How much does a commercial roof repair cost
Priced by the survey rather than by a per-foot figure. Commercial roofing prices swing on assembly and insulation condition more than on the size of the visible failure, so a range that stayed honest across the buildings this covers would be so wide as to be useless. Call (504) 800-8196 for a survey and a written scope.
Get a commercial repair surveyed against the address and the code before anything is quoted
We verify the boundary at the specific address, walk the assembly, sample the insulation where the survey suggests, and write the scope to IBC Chapter 15 with the permit route confirmed at the correct office. If you would rather start in writing, tell us what the job involves and we will come back with an estimate.
Call (504) 800-8196





