Atlanta Commercial Roofing — Every System, One Contractor.

Every commercial roof system. One contractor.

Most commercial roofing companies in Atlanta specialize in one or two systems and subcontract the rest. Which means if you have a retail center with TPO on the new wing and built-up on the original building, you’re managing two separate vendors, two warranties, two crews, and two sets of paperwork.

LB Roofing handles every system in-house. Single-ply membranes (TPO, EPDM, PVC). Modified bitumen. Built-up. Standing seam metal. Roof coatings. Whatever your building actually has — or whatever the right system is for what you’re replacing — we install it, repair it, and warranty it directly. One vendor, one warranty, one point of contact.

Lee Marcum personally meets every commercial customer on the first sales call and stays involved through final walkthrough. No salesperson, no project handoff to a junior PM, no subcontracted install crew. The owner you talk to is the owner who oversees the work.

Commercial roof systems we install

TPO — Thermoplastic Polyolefin

The default choice for new Atlanta commercial installs in 2026. White reflective membrane that bounces 70 to 80 percent of solar heat back into the sky instead of absorbing it — measurably lowers summer cooling costs. Single-ply, heat-welded seams that get stronger over time, not weaker like glued or taped seams on older systems. 60-mil standard, 80-mil for heavy mechanical traffic. Manufacturers we use: Carlisle, GAF, Versico. 20- to 30-year lifespan. NDL warranties 20-25 years available on certified-contractor installs.

EPDM — Ethylene Propylene Diene Monomer (rubber)

The original single-ply membrane, on commercial roofs since the 1960s and still going strong. Black rubber membrane, slightly more durable to physical impact than TPO, easier to field-repair, but absorbs heat instead of reflecting it. Right choice for buildings with heavy roof traffic, lots of mechanical-equipment work, or where you’re patching into an existing EPDM system. 20- to 30-year lifespan.

Modified Bitumen

Multi-ply asphalt-based system, the modern replacement for traditional built-up roofing. Polymer-modified asphalt (APP or SBS) in 2-ply or 3-ply systems. Three install methods: torch-down (heat-applied with an open flame), self-adhered (peel-and-stick, no flame, lower fire risk), and hot mopping (asphalt heated in a kettle). Strong puncture resistance, proven 50+ year track record on commercial flat roofs. Lifespan 20 to 25 years.

Built-Up Roofing (BUR)

The original commercial flat-roof system — alternating plies of asphalt-impregnated felt and hot asphalt, topped with gravel or a cap sheet. Still used today on long-lifespan institutional and industrial projects because of its puncture resistance and proven durability. 20 to 30 year lifespan. We do BUR new installs on the rare project that calls for it, and we maintain and repair the many Atlanta BUR roofs that are still going strong.

Standing seam metal

Premium commercial roof. Interlocking metal panels with raised vertical seams that are mechanically seamed or snap-locked at the field joints. 50+ year lifespan, the longest of any commercial system. Best impact resistance, best fire resistance, and a clean architectural look that holds value. Roughly 2 to 3 times the cost per square of TPO or EPDM. Right for retail, institutional, and architectural commercial buildings where the long lifespan and look justify the upfront cost.

PVC single-ply

Single-ply membrane that outperforms TPO and EPDM in environments with chemical exposure, grease, or significant rooftop oils — restaurants with kitchen exhaust on the roof, industrial buildings with chemical processing, etc. More expensive than TPO, similar lifespan, much more chemically resistant. Heat-welded seams like TPO.

Roof coatings and restoration

For commercial roofs that are sound but aging, a fluid-applied coating system (silicone, acrylic, or urethane) restores the weatherproofing surface at 30 to 50 percent of the cost of full replacement. Silicone is the standard for Atlanta — UV-stable, holds up in heat, and 10 to 15 year added lifespan when applied correctly. Acrylic is cheaper but less heat-tolerant. Urethane is more durable to foot traffic but pricier. A coating restoration is only the right answer when the underlying roof passes a moisture survey — we do that first, every time, before quoting a coating system.

How to pick the right system for your building

• For new construction or full replacement on a typical Atlanta commercial building — TPO 60-mil minimum is the default starting point
• For a building with heavy mechanical traffic — EPDM or TPO 80-mil for puncture resistance
• For restaurant, industrial, or chemical-exposure roofs — PVC for chemical resistance
• For retail or architecturally-significant projects where appearance matters — standing seam metal
• For HOAs and property managers with multiple existing buildings on different systems — whatever matches what’s there for warranty and aesthetic continuity
• For roofs that are aging but structurally sound — silicone coating restoration before full replacement
• For projects where the warranty matters more than upfront cost — manufacturer-certified install with an NDL (no-dollar-limit) warranty

Restoration vs. full replacement

The single biggest cost-savings decision on a commercial roof is whether to coat or replace. Replacement is roughly 2 to 3 times the cost of a coating restoration on the same square footage. But coating only works on a sound underlying roof.

Before any restoration recommendation we do a moisture survey — either infrared (thermal imaging at dusk after a sunny day) or capacitance (probe-based readings on a grid pattern). The survey identifies any wet insulation, which has to come out before a coating goes down. If more than 25 to 30 percent of the insulation is saturated, replacement is the better call. Under that, restoration usually wins.

Coating restoration adds 10 to 15 years to a sound roof. The underlying roof keeps doing its structural job; the coating handles the UV, weather, and small-puncture protection.

Property types we serve

• Property management companies — multi-building portfolios, board reporting, scheduled maintenance programs
• Homeowners associations (HOAs) and condo associations — board presentations, owner communication, multi-unit scheduling
• Retail and strip centers — tenant coordination, off-hours work to minimize disruption
• Medical and office buildings — HVAC coordination, life-safety considerations
• Warehouses and industrial facilities — large-square-footage projects, scheduled in phases
• Churches and institutional buildings — long-lifespan systems for budget-constrained organizations
• Schools and municipal buildings — public-procurement-compliant documentation, bonding available on request

Commercial pricing context

Commercial roofing is priced per square (one square = 100 square feet). Atlanta ranges as of 2026:

• TPO or EPDM full replacement — $600 to $1,100 per square (membrane, insulation, fasteners, edge metal, labor)
• Modified bitumen full replacement — $700 to $1,200 per square
• Standing seam metal — $1,200 to $2,500+ per square depending on profile and gauge
• Silicone or acrylic coating restoration — $300 to $700 per square
• Roof repairs (single-issue) — priced per scope, typically $800 to $4,000 for most isolated commercial repairs

We give a written, line-item scope on every commercial estimate. Tear-off, decking inspection, insulation, membrane, flashing details, edge metal, drains, parapet caps, and warranty all spelled out individually. No "starting at" pricing on commercial work.

Our commercial roofing process

Why LB Roofing for the commercial project

• 17 years of Atlanta commercial roofing since August 2008
• Owner Lee Marcum on every commercial estimate and oversight — no salesperson handoff, no junior PM
• Every major commercial system in-house — one vendor, one warranty, one point of contact
• 5-year workmanship warranty in writing, on top of the manufacturer warranty
• Manufacturer certifications — Owens Corning Preferred Contractor, GAF Authorized, CertainTeed Master Shingle Applicator, HydroStop Approved, Compliance Depot Approved
• $1M liability coverage — certificate available before work begins
• BBB A+ Top Tier — 17 years unblemished record
• No payment until 100% complete and you’ve signed off on the final walkthrough

Frequently asked questions — Atlanta commercial roofing