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Commercial & Residential / Flat Roof Installation
Proper drainage, tight seams, and the right membrane system for your structure.
A flat roof is only as good as its drainage design, membrane system, and installation quality. Done right, a low-slope roof will protect your building for decades. Done wrong, it ponds water from day one. Our crews install TPO, EPDM, and modified bitumen systems with proper taper, tight seams, and correctly terminated flashings — backed by a workmanship warranty and honest, upfront pricing.
Fast, free, and no obligation.
A properly installed flat roof membrane system, layer by layer
New Roof Installation
Installation isn’t just for new buildings. Here are the most common situations where a full new flat roof system is the right answer.
We work with builders and general contractors on new commercial and mixed-use projects, designing and installing flat roof systems to code from the structural deck up.
Low-slope sections on modern homes, sunrooms, and covered porches need a membrane system, not shingles — we install the right system for the slope.
When an existing flat roof has too many layers, a failed deck, or improper drainage, a full tear-off and fresh installation is the only way to start correctly.
After a major storm or insurance total-loss determination, we install a complete new flat roof system — handling documentation and adjuster communication along the way.
Moving from an aging tar-and-gravel or mod-bit system to modern TPO or EPDM is a popular upgrade that improves drainage, reflectivity, and long-term performance.
Warehouse extensions, retail build-outs, and covered walkways with low-slope geometry all require membrane roofing — we size and specify the right system for each.
Why Choose Us
We design taper and drain placement before we touch the deck — because drainage is the single most important factor in flat roof longevity.
Every flat roof installation meets local building code and we pull the required permits so your project is fully documented and inspected.
We follow TPO, EPDM, and mod-bit manufacturer specifications exactly — so full material warranties remain valid and claims are honoured if needed.
Parapet flashings, pipe boots, drain collars, and edge terminations are part of every installation — the details most contractors rush that determine how long a flat roof actually lasts.
Our Installation Process
Every new flat roof installation follows the same five-step process, so you always know what happens next and why.
We discuss your project scope, membrane system options, drainage design, and any structural or load considerations before anything else.
A line-item estimate covering every component — deck prep, insulation, cover board, membrane, flashing, drains, and labor — with no hidden costs.
We pull required permits, coordinate membrane and insulation delivery, and schedule the crew so the project runs on time and on budget.
Our crews install every layer in proper sequence — deck prep, insulation taper, cover board, membrane, seam welding or bonding, drain collars, and parapet flashings.
A full post-installation walkthrough covers every seam, drain collar, flashing termination, and parapet detail — followed by complete site cleanup and debris removal.
Membrane Systems
We install all major low-slope membrane systems. We’ll help you choose the right one for your building’s structure, drainage design, and budget.
Our most installed flat roof system. Heat-welded seams, a reflective white surface, and strong UV and chemical resistance make it the leading choice for commercial and residential low-slope roofs.
The proven rubber membrane with one of the longest track records in flat roofing. Excellent UV and ozone resistance, outstanding flexibility across temperature extremes, and a long service life.
A multi-ply torch-applied or cold-process asphalt system with a granulated cap sheet. Excellent impact and foot-traffic resistance — a reliable choice for buildings with rooftop access.
Why Trust Us
We’ve built our reputation on flat roof installations that drain correctly and seal completely from day one — across Mississippi, Alabama, and Georgia.
Top 3% of roofing contractors nationwide — held to higher installation standards on every project, including low-slope and commercial systems.
Decades of flat and low-slope installation experience across commercial, industrial, and residential projects on every crew we send out.
Every flat roof installation is backed by our workmanship warranty — on top of the manufacturer’s material warranty on the membrane system.
A local crew that shows up when scheduled, pulls the permit, and stays until the installation passes inspection — not a franchise routing work from out of state.
Financing Available
A new flat roof system is a significant investment, especially on commercial buildings or full tear-off projects. Our team works with flexible financing options so budget doesn’t compromise the quality of the system you install.
“B&A designed and installed a new TPO system on our commercial building from scratch. They got the taper right, the drains in the right spots, and the seams were perfect. Passed inspection on the first visit. Best flat roof install we’ve ever had done.”
— A B&A Roofing Customer, Hattiesburg, MS
Get Started Today
Fast, free, and no obligation. Tell us about your project and one of our local flat roofing specialists will follow up to discuss membrane options, drainage design, and next steps.
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A local B&A Roofing flat roof specialist will reach out shortly to discuss your project and schedule a free on-site consultation.
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