Flat Roof Repair and Replacement in Mobile, AL
Wise Builders repairs, coats, and replaces flat and low-slope roofs across Mobile and Baldwin County. We fix ponding water, leaking seams, and worn-out membranes on offices, retail centers, restaurants, and churches.
Every flat roof starts with core cuts and a moisture check, so the fix matches what is actually under the membrane.
Call (251) 305-7282 for a free roof inspection.
★★★★★ 5.0 on Google · 160+ verified reviews · Alabama GC License #60291 · Licensed, bonded & insured
Flat Roof Repair, Restoration and Replacement
Flat and low-slope roofs fail at the water: where it stands, where it drains, and where it gets in at seams and flashings. We fix all three.
Repair
Open seams, failed flashings, pitch pans, and drains on TPO, PVC, mod-bit, and built-up roofs. See commercial roof repair.
Restore
A silicone coating over a dry flat roof stops leaks and reflects heat. Silicone tolerates ponding better than any other coating. See roof coatings.
Fixing Ponding Water
Water standing more than 48 hours after a rain shortens any flat roof.
- Clear and reset drains and scuppers.
- Add crickets to move water around curbs and walls.
- Install tapered insulation to build slope into the roof.
- Add drains or scuppers where the roof has too few.
- Choose a membrane that tolerates the water that remains.
Flat Roof Types We Work On
Every flat roof system common in South Alabama.
- TPO and PVC single-ply.
- Modified bitumen (mod-bit).
- Built-up roofs with gravel or cap sheet.
- EPDM rubber.
- Coated roofs and existing spray foam roofs.
What Flat Roof Work Costs
A leak repair, a coating, and a replacement are very different numbers. Here are the typical ranges.
Typical Gulf Coast Cost Ranges
Typical Gulf Coast ranges for a 10,000 square foot flat or low-slope roof. Your inspection replaces these with one fixed price.
| System | Cost per Sq Ft | 10,000 Sq Ft Roof | On-Site Time |
|---|---|---|---|
| Leak repairseams, flashing, pitch pans, drains | $350 to $1,500 per leak | Per leak | Same day to 2 days |
| Silicone coating restorationponding areas, single-ply or mod-bit | $2.00 to $3.50 | $20,000 to $35,000 | 4 to 7 working days |
| Single-ply recover over a dry existing roofTPO or PVC with cover board | $4.25 to $6.50 | $42,500 to $65,000 | 1 to 2 weeks |
| TPO or PVC tear-off and replacecode insulation, new edge metal | $6.50 to $11.50 | $65,000 to $115,000 | 2 to 3 weeks |
Water that stands more than 48 hours after a rain shortens the life of any flat roof. Fixing the slope with tapered insulation or new drains is cheaper than replacing a roof that ponds every summer.
What Changes a Flat Roof Price
Flat roofs fail at the water. That is where the money goes.
Drainage
Clogged drains, low spots, and undersized scuppers cause most flat-roof leaks. Crickets and tapered insulation fix the slope.
Number of Layers
Older flat roofs often have two or three layers. Each layer adds tear-off cost and weight. A recover is only an option over one dry layer.
Wet Insulation
A leak spreads through insulation far from where you see the stain. Core cuts and a moisture scan show how much has to come out.
Ranges are installed costs for a simple 10,000 square foot low-slope roof, adjusted to Alabama from national 2026 roofing cost data and published Gulf Coast contractor pricing. Deck, purlin, and wet-insulation replacement, HVAC curb work, and permits are priced after we inspect the roof.
"Jim Brock is the best project manager ever! He constantly communicated with me about the materials, build and timeline. No stones were unturned! Exceptional work by his team."
From Inspection to Warranty
Every commercial roof runs through one contract and one project manager. You make the decisions. We carry the crew, the permit, the inspections, and the warranty paperwork.
Step 1. Roof Inspection and Core Cuts
We walk the roof and check the membrane or panels, seams, flashings, curbs, drains, gutters, and edge metal. We cut cores to see the layers and test the insulation for moisture, and we look at the deck or purlins from inside when we can.
Step 2. Options and a Fixed Price
You get a written proposal with every layer, thickness, fastening pattern, and warranty term listed, plus a fixed price. When repair, coating, recover, and replacement are all real options, we price them side by side.
Step 3. Wind Design and Permit
We size the fastening, perimeter and corner enhancement, and edge metal to the design wind speed for your address, then pull the permit with the city or county that has your building.
Step 4. Schedule Around Your Business
We plan the work around your hours. On occupied buildings we work in sections, protect HVAC intakes, and dry in every section before the crew leaves. Your doors stay open.
Step 5. Install With Daily Updates
Your project manager is on the roof with the crew and sends progress photos. Hidden damage, like rusted purlins or wet insulation, is priced at the unit price in your proposal and approved by you before we fix it.
Step 6. Inspection, Warranty and Closeout
The manufacturer inspects the finished roof before it issues the warranty. You get the warranty, the final inspection, lien waivers, and a photo record of the roof, start to finish.
"Great people, great work and great experience. Great communication by William Fields. Work was done on schedule and exactly as stated. I will use these guys again!"
Work From Our Recent Jobs
Two recent Duro-Last PVC retrofits over rusted metal roofs: The Homestead Mobile in Theodore and the Mobile SPCA in Mobile.
See the full scope of both jobs on our commercial roofing page. We also build out commercial interiors, like Breakout Games at The Wharf.
Why Building Owners and Property Managers Hire Us
One Contractor, Roof and Building
We are a licensed general contractor, not only a roofer. When a leak has ruined ceilings, drywall, or insulation, the same crew and the same project manager fix the inside too.
One Fixed Price, in Writing
The proposal lists the system, every layer, the warranty term, and unit prices for hidden damage. The price changes only through a written change order you sign first.
Built for Small and Mid-Size Buildings
Offices, retail centers, churches, metal shops, and apartments are our focus. Your roof gets a dedicated project manager, not the crew left over from a warehouse job.
The Credentials Behind Every Commercial Roof
Wise Builders holds Alabama General Contractor License #60291 and is a Duro-Last approved contractor, which lets us offer manufacturer No-Dollar-Limit warranties up to 30 years, depending on the system. Every commercial roof also carries our 5-year workmanship warranty. We carry general liability and workers' compensation and are BBB accredited.
Before you sign with anyone, ask for the license number, a certificate of insurance, and a sample of the warranty you will actually receive. A No-Dollar-Limit warranty covers labor and materials for leaks. A materials-only warranty does not. We send ours with the proposal.
"The contract was clear and all work was performed on schedule. A certificate of compliance was issued by a third party after inspection. It is refreshing to find a company like this."
Frequently Asked Questions About Flat Roofs
Why does water pond on my flat roof, and is it a problem?
Ponding comes from clogged drains, low spots, sagging deck, or too few drains. Water standing more than 48 hours after a rain wears the membrane faster and finds every weak seam. It is worth fixing.
What is the best flat roof material for South Alabama?
White PVC or TPO over new insulation for most buildings. PVC where there is grease exhaust or heavy ponding. Silicone coating to restore a flat roof that is still dry underneath.
Should we repair, coat, or replace?
Repair a few leaks on a sound roof. Coat a dry roof with scattered leaks. Replace a roof with wet insulation across large areas or two layers already on it. Core cuts decide it.
How much does a flat roof cost?
On the Gulf Coast, flat roof work typically runs from $350 for a single leak repair to $11.50 per square foot for a full replacement. A silicone restoration is $2.00 to $3.50 per square foot, a single-ply recover $4.25 to $6.50, and a TPO or PVC tear-off $6.50 to $11.50.
How long do flat roofs last?
Typically 20 to 30 years for PVC and TPO, 15 to 20 for mod-bit and built-up roofs, and 10 to 20 for a silicone coating before a recoat. Drainage and maintenance decide where in that range your roof lands.
Ready to Fix Your Flat Roof?
Your flat roof starts with a free inspection, core cuts, and a written, fixed price. Nothing to pay and nothing to sign.
Wise Builders Roofing and Renovations holds Alabama General Contractor License #60291, is a Duro-Last approved contractor, and brings one project manager, one written scope, and one fixed price to every commercial roof in Mobile and Baldwin County.
Call our Mobile headquarters at (251) 305-7282 or our Foley office at (251) 270-5270, or send the form and we will set a free roof inspection.
Wise Builders Roofing and Renovations, 6215 Rangeline Rd #105, Theodore, AL 36582 and 105 W Camphor Ave #100A, Foley, AL 36535.
"William is great to work with. Wise Builders are extremely thorough and professional. Everything was done exactly how and when they said it would be. A++++"