FREE Roofing Estimates
Claim Banner - Big Easy Roofing
24 Hour Roof Replacement Guarantee
Call Icon Top

Call Our Roofing Experts! (504) 800-8196

FREE Roofing Inspections
Home/Service Areas/Louisiana/Harahan/Commercial Roof Replacement

Commercial Roof Replacement in Harahan, LA

Big Easy Roofing replaces low slope commercial roofs across Harahan and east bank Jefferson Parish. On a commercial roof the membrane is the part everyone quotes and the insulation under it is where the money and the risk actually sit, so the first thing we settle is whether the existing assembly comes off or stays. On a Harahan-address building the second thing to settle is which office issues the permit, because ZIP 70123 covers both the City limits and a commercial belt that sits outside them.

Get Your Commercial Quote! Call (504) 800-8196
Tear off or recoverThe first decision
Parish route by defaultOn a 70123 commercial building
IBC Chapter 15Code for the building
Two recordsPermit file and warranty

Harahan commercial roof replacement at a glance

A commercial replacement is priced on area, assembly and what is found when the membrane comes up, so it is surveyed before it is quoted rather than priced from a plan. On a Harahan-address building the permit is more often Jefferson Parish than City of Harahan, because the commercial belt sits in the unincorporated part of ZIP 70123.

What we replace

Low slope and metal

Single ply TPO and PVC, EPDM, modified bitumen, built up systems and standing seam metal. Call Big Easy Roofing on (504) 800-8196 and we will survey the roof before quoting.

Which office covers you

Parish by default on 70123 commercial

ZIP 70123 covers the Harahan city limits AND the unincorporated Jefferson Parish areas of Elmwood and River Ridge, and the commercial corridor sits largely in the unincorporated part. Most 70123 commercial buildings are therefore Jefferson Parish permits rather than City of Harahan permits, and the boundary is verified at the specific address before anything is filed. Inside the Harahan city limits the City Regulatory Department on (504) 737-6765 handles it.

Which code applies

IBC Chapter 15

Louisiana R.S. 37:3737(I), introduced by Act 239 of 2025 and recodified by Act 881 of 2026. Subsection (I)(1) routes every building that is not a one or two family dwelling to International Building Code Chapter 15, the roof assemblies chapter, as adopted with Louisiana amendments.

How the fee is set

On scope, confirmed at file

Neither the City of Harahan nor Jefferson Parish publishes a standalone commercial roofing permit fee line item this page can verify. The Parish route is priced from its general commercial schedule rather than a roofing line, and the City route is confirmed with the Regulatory Department at file. Both are permit side costs, not the cost of the roof itself.

What decides the price

The insulation, not the membrane

Membrane cost per square foot varies far less between systems than the cost of what is underneath it. Saturated insulation found at tear off is the largest single variable on a commercial replacement, which is why we measure it before quoting rather than after.

Warranty

Two of them, and they differ

Our workmanship warranty covers the installation. The membrane manufacturer issues its own warranty on the system, on its own terms, usually after its own inspection and only where the installer holds its approval. They are separate documents and one does not stand in for the other.

A commercial roof is an assembly rather than a covering. Deck, vapour control, insulation, cover board, membrane and every flashing and penetration through it are one system, and a replacement is the only moment when the parts below the membrane can be corrected at all. That is why a replacement quote that names only a membrane is describing a fraction of the job it is pricing.

The decision that sets everything else is whether the existing roof comes off. A recover lays a new membrane over what is there, which is quicker and cheaper, and it cannot take water out of the assembly. That is also why the code does not permit a recover where the existing roof is water soaked or too deteriorated to build on. A tear off takes the assembly back to the deck, which costs more, takes longer and is the only version that lets anyone see the deck. Neither is automatically right. What settles it is the condition of the insulation, the number of coverings already on the building, and what the deck is doing at the perimeter.

The assemblies we replace and what each one is for

Five systems account for the bulk of low slope commercial roofing. The table sets out what each is suited to and where each tends to be chosen, so a quote can be read against the building rather than against a brand name.

AssemblyWhat it suitsTypical service lifeWhat to watch
TPO single plyLarge open roofs, reflective surface wanted20 to 30 yearsSeam quality is the whole system. Welded seams are only as good as the day they were run
PVC single plyKitchens, plant rooms, grease or chemical exposure20 to 30 yearsCosts more than TPO and is the reason it is specified where grease is present
EPDM rubberSimple roofs, long track record wanted20 to 30 yearsBlack surface absorbs heat, so it is a poorer fit where cooling load matters
Modified bitumenSmaller roofs, foot traffic, complex detailing15 to 20 yearsMulti ply and forgiving to detail, but heavier and slower to install
Standing seam metalSloped commercial roofs, long life wanted40 to 60 yearsHighest cost, longest life. Movement and fastener detailing decide whether it lasts

Service life ranges are what these systems are generally specified to achieve, not a promise about any particular roof, and the figure depends far more on detailing, drainage and maintenance than on the choice of membrane. We do not publish square foot pricing for commercial work because the area, the assembly and the condition of the insulation move it too far for a range to mean anything. Call (504) 800-8196 and we will survey the roof and put the specification and the price in writing.

Since 2025 a commercial reroof here leaves two separate records

This part has changed and may not yet be familiar to every building owner. A Harahan-address commercial replacement now generates a permit file and a manufacturer warranty file covering the same roof, at the same stages, to different requirements. Plan for both at the start, and ask for any documentation cost to be named on the quote.

The permit route

R.S. 37:3737(I)(1)

Act 239 of 2025 requires any parish or municipality that issues construction permits to permit and inspect roof construction and reroofing. For a building that is not a one or two family dwelling the code named is International Building Code Chapter 15.

The office that covers you

By boundary, not by ZIP

ZIP 70123 covers Harahan city limits and unincorporated Elmwood and River Ridge, and the commercial corridor sits largely in the unincorporated part. Most 70123 commercial buildings therefore go to the Jefferson Parish permits office, but the boundary is verified at the specific address before anything is filed. City of Harahan permits run through the Regulatory Department on (504) 737-6765.

Either office may accept photographs

R.S. 37:3737(H)

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 commercial job is settled at the survey rather than assumed beforehand.

The warranty is a separate record

Issued by the manufacturer

A system warranty on a single ply roof is issued by the membrane manufacturer, usually after its own inspection, and only where the installer holds its approval. That warranty and the permit file are two separate documents. Neither substitutes for the other.

Why we survey before quoting

Commercial roofing prices swing on insulation condition more than any other factor, and insulation condition cannot be seen from below or from a satellite. Saturated insulation found at tear off is the largest single variable on a replacement, and a quote written from a plan rather than a survey is a quote that will change once the work starts.

So we walk the roof, measure water where it stands, sample the insulation where the survey suggests it is worth doing, and price the assembly against what we find. Nothing is added afterwards without a written change order.

Recover or tear off, and what the code allows

A recover lays a new membrane over the existing one, keeps the building in service through most of the work, and cannot dry out wet insulation. The code allows a single recover on a roof that is not saturated and not already carrying two coverings, and refuses it otherwise. A tear off takes the assembly to the deck, costs more and takes longer, and is the only version that lets the deck be seen and the insulation replaced. Which one is right is a survey question rather than a price question.

Get Your FREE Quote Call (504) 800-8196

Working over an occupied building

Most commercial reroofs happen over a business that keeps operating through the job. Three things about that shape the sequence, and none of them is about the roof itself. It is about how the work is staged so the building underneath keeps working.

Weather windows are the schedule

A single ply roof cannot be started ahead of rain and left in a half-torn state overnight, and the Gulf coast delivers rain at short notice through most of the year. So the schedule is built around weather windows and daily tie-off details, not the other way round. A tie-off run at 4pm because a squall arrived is one of the commonest sources of a leak that shows up months later.

Interior tenants keep working

Most commercial buildings keep running through a reroof, so noise, dust and any interior water are managed on the tenant side rather than left to sort themselves. Tear off dust falls where the tear off is, floor by floor drops are contained, and any suspended ceiling below the work is checked before the work rather than after.

Rooftop equipment stays live

HVAC, exhaust fans and the electrical service passing through the roof all have to keep working while the membrane around them is replaced. That is why penetrations get scheduled by trade rather than by geography: we run curbs and flashings around live equipment in an order that stops the equipment being isolated on the wrong day.

Big Easy Roofing Process

Four steps, and the survey precedes any figure because the insulation is what decides the price. A quote written from a plan rather than from the roof is a quote that will change.

A roofer surveying a low slope commercial roof and its insulation before quoting a replacement
Get Your FREE Quote Call Our Roofing Experts!
01

Survey the roof and the assembly

Membrane identified, drainage walked, penetrations recorded, and the insulation sampled where the survey suggests it is worth doing. What is found is what the quote is written against, so nothing appears at tear off that had not been discussed.

02

Settle the permit route and the code

The boundary is checked at the specific address, and the permit route confirmed with the office at file. IBC Chapter 15 is what the office inspects against on a commercial job, and the survey is written so the file matches the code.

03

Written specification and price

Membrane, insulation, cover board, drainage adjustments and penetration details are all listed, with any tenant coordination noted, and the price is fixed to that scope rather than a plan.

04

Execute, document, hand over the two files

The work runs to the specification, the inspections happen at the stages the office requires, and you receive two records at the end: the permit file with the inspection sign offs, and the manufacturer warranty on the finished system. 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 and scope of work. A replacement is the point at which drainage, insulation and rooftop penetrations can all be corrected at once, so it is worth reading the commercial inspections and commercial repairs pages alongside this one.

Filter by service type: