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Home/Service Areas/Louisiana/Baton Rouge/Commercial Roof Repairs

Commercial Roof Repairs in Baton Rouge, LA

Big Easy Roofing repairs commercial and low slope roofs across Baton Rouge and East Baton Rouge Parish. A commercial roof does not fail the way a house roof does, and since August 2025 it does not get permitted the same way either, so we survey the assembly, settle which office and which code cover your building, and put the scope in writing first.

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IBC Chapter 15Code for your building
East Baton RougeWho permits it
Set on valuationHow the fee works
Same weekSurvey turnaround

Baton Rouge commercial roof repairs at a glance

A commercial roof in Baton Rouge is typically low slope, which changes what fails, how it is repaired and which code governs it. Since 1 August 2025 a re roof also needs a permit and inspection, on the commercial limb of the new law rather than the residential one.

What we repair

Low slope and metal

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 it before quoting.

Who issues the permit

East Baton Rouge Parish

For addresses in Baton Rouge and the unincorporated parish. If the building sits inside the City of St. George limits it is permitted by St. George instead, and Baker, Zachary and Central run their own. We confirm which office covers the address before filing.

Which code applies

IBC Chapter 15

Act 239 of 2025 splits roofs two ways. Buildings other than one and two family dwellings go to International Building Code Chapter 15. Houses go to the residential code instead. If you own a shop, a warehouse, a church or an apartment block, you are on the commercial limb, written as the 2021 I codes with Louisiana amendments.

How the permit is priced

On construction valuation

There is no flat reroof fee in the East Baton Rouge schedule. A commercial permit is calculated per thousand dollars of construction valuation, and a separate plan review fee is calculated the same way. The bands are in the table below, read from the parish fee page on 3 September 2026.

The survey

Assembly, drainage and moisture

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 it is not after.

Warranty

Workmanship on the repair

The repair carries our workmanship warranty. Where the membrane is still inside a manufacturer warranty we work to the manufacturer detail rather than against it, because an incompatible patch can void the remaining cover on the whole roof. The terms are the manufacturer's, so we confirm what they require before starting.

A commercial roof rarely announces itself the way a house roof does. There is usually no attic to stain and no ceiling directly under the deck, so the first sign is often a damp patch in an office two bays away from the actual defect, or an insulation board that has been quietly wet for a year. By the time it is visible inside, the assembly below the membrane has normally been holding water for some time.

That is why a commercial repair starts with the drainage rather than the leak. Low slope roofs are designed to move water to a small number of drains or scuppers, and the first thing to check on a repeat repair is whether water is getting there at all: a drain proud of the deck, a scupper blocked since the last storm, or a section that settled and now holds a pond after every rain. Fix the defect and leave the pond, and that seam is the one most likely to go again.

The second thing that has changed is administrative rather than physical. Until August 2025 a commercial reroof in East Baton Rouge did not need its own roofing permit and inspection. It does now, it runs through MyGovernmentOnline, and the fee is worked out from the value of the job rather than a fixed price. That is worth knowing before a budget is signed off rather than after the first inspection.

What the parish charges to permit a commercial roof

East Baton Rouge has no roofing line in its fee schedule, so a commercial roof is permitted like any other commercial work: on construction valuation, with a separate plan review fee on top. These are the parish figures, not ours.

Construction valuationPlan review feeBuilding permit feeWhat this typically covers
$100,000 or less$3 per thousand, $100 minimum$5 per thousand, $100 minimumWhere most commercial repair work and small single building re roofs sit
Over $100,000 to $500,000$3 per thousand, $100 minimum$500 plus $4 per thousand above $100,000A full single ply or modified bitumen replacement on a mid size building
Over $500,000$1,500 plus $0.50 per thousand above $500,000$2,100 plus $1.50 per thousand above $500,000Large industrial roofs, schools, and multi building sites
Any valueTechnology fee $25 on every permitReinspection $75, after hours $150Added on top of the two fees above. Card payments carry a 5 percent charge

Figures read from the East Baton Rouge permit and inspection fee page on 3 September 2026 and quoted as the parish charges them. They are the cost of the permit, not the cost of the roof. Fees change and valuation is assessed by the parish, so confirm the current figure with Permits and Inspections on 225-389-3205. For what the work itself costs, call (504) 800-8196 and we will survey the roof and put a price in writing.

Which code and which office cover a commercial roof

Nearly everything written about the 2025 Louisiana roofing law describes it as a rule about houses. It is not. The statute has two limbs, and a commercial building is on the other one, which changes the code, the inspection and the paperwork.

What actually changed

Permit and inspect

Act 239 of 2025 introduced the requirement, now carried at La. R.S. 37:3737(I), requiring every municipality and parish that issues construction permits to permit and inspect roof construction and re roofing. East Baton Rouge applied it to jobs beginning after 1 August 2025, and its own notice says it covers roof installations, including both re roofs and new construction, for commercial and residential structures.

Your building is on the commercial limb

IBC Chapter 15

Subsection (I)(1) sends every building other than a one and two family dwelling to International Building Code Chapter 15, as adopted by the Louisiana State Uniform Construction Code Council. Only (I)(2), the houses, goes to the residential code. Louisiana is on the 2021 editions with state amendments, and the council has the 2024 editions proposed for 1 January 2027.

The inspection can be done from photographs

Geotagged and filed

La. R.S. 37:3737(H) allows a building code enforcement officer to accept photographs that are location verified with geotagging for roofing inspections. East Baton Rouge takes that up and wants the set filed as a single PDF with its Roofing Information Form through MyGovernmentOnline, all shots in landscape.

The office is not always the parish

Check the address first

Permitting inside the City of St. George limits transitioned to St. George for applications filed on or after 16 October 2024, and Baker, Zachary and Central run their own. A building can read as Baton Rouge on an envelope and be permitted somewhere else, which is a phone call at the start and a lost fortnight in the middle.

The parish roofing form is written in residential code language

This is worth knowing before you file. The photograph checklist attached to the East Baton Rouge roof permit notice asks for the deck, the underlayment and the roofing system to be photographed in accordance with the 2021 IRC and state amendments. The IRC is the International Residential Code. Act 239 routes a building that is not a one or two family dwelling to IBC Chapter 15 instead.

The same form asks whether any portion of the roof has a pitch below 4:12, which on a commercial low slope roof is usually the entire roof, and asks for a photograph of the installed starter strip, which a single ply membrane does not have. None of that stops a commercial roof being permitted. It does mean the documentation route is worth settling with Permits and Inspections on 225-389-3205 before the crew mobilises, rather than after an inspection is rejected. We do that as part of the job.

One practical detail sits in the same notice. On new construction or an addition the roof is permitted as part of the main building permit rather than as a separate roofing permit, but the parish still wants the roofing form and the full photograph set filed against it. A new commercial building therefore does not avoid the documentation, it simply arrives under a different permit number, and the work still has to be photographed in sequence as it goes on rather than reconstructed afterwards.

The 25 percent rule is a Florida rule and it is not what triggers an upgrade here

It comes up on commercial work constantly, usually from an owner who has read that repairing more than a quarter of the roof forces a full replacement. That idea comes from Section 706 of the Florida Building Code, Existing Building, which carries conditions of its own and applies in Florida. Louisiana is on the International codes and has no equivalent percentage trigger.

What decides it on a commercial roof here is the scope of work and the permit itself. Once the parish classes the job as a re roof it is permitted and inspected on the Chapter 15 route, whatever fraction of the area that happens to be. The useful question is not what percentage you are replacing, it is whether the parish is going to class the work as a re roof, and that is answerable before you start.

There is a real percentage rule in East Baton Rouge, and it catches people out because it sounds like the Florida one. Under the parish floodplain rules, work counts as substantial improvement once its cost reaches 50 percent of the market value of the structure, for buildings inside a Special Flood Hazard Area. That is a federal flood requirement rather than a roofing rule, it measures the value of the work against the value of the building rather than the area of the roof, and it only applies in the flood zone. If the building sits in a Special Flood Hazard Area, settle where the work stands against that threshold with the parish before the scope is fixed rather than after, because it can change what else the building is required to do.

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What fails first on Baton Rouge commercial roofs

Three patterns come up again and again on low slope roofs in this climate. Each one is a reason a previous repair did not last, and each is fixable, but only if the thing causing it is fixed at the same time rather than patched over.

Standing water on a roof that never had the fall it needed

A low slope roof is not a flat roof, and the difference is drainage. Where a deck has settled, an insulation layer has compressed, or a drain sits slightly proud of the surface, water stops moving and stays. In Baton Rouge heat that pond then cooks the membrane above it, and a seam that might otherwise have had years left in it can go early.

The tell is a dark ring on the membrane that is still visible when the roof is dry. A repair inside that ring without correcting the fall is a repair with a known expiry date, so we price the drainage correction beside the patch and let you choose with both numbers in front of you.

Seams and laps giving up before the field of the membrane does

Single ply roofs almost never fail in the middle of a sheet. They fail where two sheets meet, because that is where the heat welding, the adhesive or the tape has to do the work. Twenty years of Gulf humidity, thermal movement and ultraviolet ages a lap faster than the field, and an older EPDM roof with taped seams is a typical example.

That is good news commercially. A membrane with sound field sheets and failing laps can often be repaired or re covered rather than torn off, which can cost less than a full replacement. Which of the two applies is settled by surveying the assembly.

Penetrations, curbs and parapets, which is where most leaks actually are

Every unit, vent, pipe and conduit through a commercial roof is a hole that was made watertight by a detail rather than by the membrane itself. Rooftop equipment gets serviced, engineers walk on flashings, and a curb that was sound at installation is often the thing that has been stepped on for a decade.

Parapet walls and coping joints belong in the same group. Water gets behind a coping cap and runs down inside the wall, which reads inside the building as a wall problem rather than a roof problem and gets diagnosed late. We check these details before we look at the membrane itself.

Big Easy Roofing Process

Four steps. The first two happen before anyone quotes a price, because on a commercial roof the expensive mistake is repairing the leak and leaving the reason for it.

A roofer inspecting a flashing detail where a roof meets a wall
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01

Survey the assembly and the drainage

We identify the membrane and its age, walk the falls to find where water actually stands, check every penetration, curb, drain and parapet detail, and look for wet insulation under the membrane. You keep the photographs whether or not you use us.

02

Settle the permit route before pricing

We confirm whether the scope is a repair or a re roof, which office covers the address, and what documentation the parish wants for a Chapter 15 building. On a commercial roof that answer changes the programme and the cost, so it comes first.

03

Written scope, with the drainage priced separately

You get the defect named, the fix described and the price in writing, with any drainage or insulation correction priced as its own line so you can see what is a patch and what is a cure, and decide accordingly.

04

Repair, photograph, and keep you trading

Work is sequenced around your opening hours where it can be, noisy and disruptive stages flagged in advance, the finished detail photographed, and the site left clear. Call (504) 800-8196 to get the survey booked.

Everything else we do in Baton Rouge

The rest of the Big Easy Roofing services available in Baton Rouge, each with its own page, crew and written scope. Where a commercial roof is still holding water after a repair, a coating or a re roof is usually the next thing worth pricing, so ask us to compare the two.

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