How much does a commercial flat roof cost per square foot?

TPO or EPDM replacement in Palm Beach County generally runs $8 to $14 per square foot including insulation and flashings. A restoration coating over a sound existing roof runs $4 to $7 instead, which is why the first thing we do is core sample to find out which of those you are actually looking at.

Is it better to coat or replace a flat roof?

It depends entirely on what the core samples show. Dry insulation and a sound deck means a coating buys 10 to 15 years at roughly half the cost of replacement, and that is usually the right call. Saturated cores mean coating traps the water, the deck keeps corroding underneath, and you pay twice. We core before recommending, not after.

What is the average lifespan of a commercial flat roof?

Twenty to thirty years for a properly installed and maintained system, and roughly half that for one nobody looks at. What kills flat roofs early here is standing water from lost slope, and foot traffic from technicians walking the same path to rooftop units year after year without walkway pads.

Why do flat roofs leak so much in Florida?

Because water sits instead of running off. A sloped roof sheds past a marginal detail in seconds. A flat roof holds water over that same detail for days after a summer downpour, and any seam, fastener or curb becomes an entry point. Add ponding from deck deflection on older buildings and you have water standing on the weakest points for a week at a time.

TPO, EPDM or modified bitumen, which suits Florida?

TPO is the common answer because its reflectivity is high out of the box, which matters for both cooling load and energy code compliance. EPDM suits buildings with heavy foot traffic or a lot of mechanical equipment. Modified bitumen still has a place on smaller or complex roofs. Slope, building use and traffic decide it, not brand preference.

Does a commercial re-roof need a permit in Palm Beach County?

Yes, with wind-load calculations and product approval documentation, plus inspections during and after the work. Commercial submissions are more involved than residential because of the mechanical penetrations and edge metal requirements. We handle the filing and the inspection scheduling as part of the project.

Can you work around an operating business?

Yes, and it is most of the planning on a commercial job. We tear off in sections so no area is ever left open overnight, stage materials clear of tenant entrances, and schedule loud or odor-producing work outside peak trading hours. Anything affecting food service or sensitive stock gets flagged in advance.

Commercial Roofing in West Palm Beach, FL

West Palm Beach commercial properties in neighborhoods like Downtown West Palm Beach and El Cid often feature low-slope roofs that demand membranes resistant to standing water and salt-laden air. TPO and EPDM systems perform best here when seams are heat-welded or adhered with compatible primers that withstand daily temperature swings from humid summers into the drier winter months. Installers must also account for rooftop HVAC units common on medical offices near the Norton Museum of Art and Kravis Center, routing penetrations to prevent leaks during the June-through-November hurricane season.

Palm Beach County building codes require enhanced wind uplift ratings on commercial roofs, especially for structures in Grandview Heights and Roosevelt Estates where older masonry buildings meet newer steel-frame additions. Contractors routinely add secondary drainage scuppers and tapered insulation to move water off flat decks before it reaches the membrane edge. Skipping these details leads to ponding that accelerates deterioration in the county's consistently high humidity.

Edge cases appear on buildings near Clematis Street and CityPlace where roof access is limited by adjacent structures and foot traffic. Crews schedule work around business hours at 5335 N Military Trl to minimize disruption while verifying existing deck conditions before overlaying new material. Metal edge details must be fastened into treated wood nailers rated for 130 mph winds to meet current county requirements.

Commercial roofs in Palm Beach County fail differently from residential ones, and the reason is water dwell time. A sloped roof sheds water past a marginal detail in seconds. A flat roof holds it over the same detail for days after a summer downpour, so every seam, fastener and penetration becomes an entry point. Almost every commercial leak we trace here comes back to ponding, a seam or a curb rather than the membrane itself giving out.

The first step on any commercial job is core sampling, and it happens before anyone quotes a number. We cut small test sections through the assembly to find out whether the insulation under the membrane is dry. If it is, a restoration coating buys 10 to 15 more years at roughly half the cost of replacement. If the cores come back saturated, coating over it traps water against the deck and you pay twice. A contractor quoting a commercial roof off a walkover alone is guessing.

Ponding is the local pattern worth budgeting for. Buildings put up in the 1980s and 1990s have often lost their original slope to deck deflection, and water now stands in the same low spots every wet season. Replacing the membrane without correcting that just resets the clock on the same failure. Tapered insulation rebuilds positive drainage to the drains, and it is the line item owners most often cut and most often regret.

Rooftop mechanical equipment is the second pattern. Every curb is a potential leak, and every technician walking the same route to the same air handler compresses insulation along that path until the membrane splits. Walkway pads cost very little installed during a replacement and prevent a failure that is expensive and tedious to locate later. On an operating building we tear off in sections so no area is ever left open overnight, and schedule noisy or odor-producing work around trading hours.

Technician insight

In West Palm Beach, the thing that catches most people out with Commercial Roofing is how quickly UV and constant humidity break down older modified bitumen seams on flat roofs once hurricane season starts. Buildings in Roosevelt Estates and Northwood often have multiple layers from past repairs that hide wet insulation until we cut test holes.

Office Building Roof Leak Near CityPlace

A retail office building in Downtown West Palm Beach reported interior water stains after spring storms. Inspection found failed seams around HVAC curbs on the existing EPDM. We replaced the damaged sections with new membrane and added secondary drains. The roof has remained dry through the following hurricane season.

Commercial Roofing Services We Offer

✓TPO Roof Installation

Heat-welded TPO membranes suited for low-slope commercial roofs in Palm Beach County that resist UV and wind-driven rain common during hurricane season.

✓EPDM Membrane Repair

Targeted patches and seam restoration on existing EPDM roofs serving office and retail buildings in Downtown West Palm Beach and Lake Worth.

✓Modified Bitumen Roofing

Torch-down or cold-applied modified bitumen systems that handle thermal movement on older masonry buildings in El Cid and Flamingo Park.

✓Commercial Roof Inspections

Detailed walkthroughs that check seams, drains and flashings on properties near the Palm Beach Zoo and Boynton Beach before storm season arrives.

✓Hurricane Damage Assessment

On-site evaluation of wind and water damage to commercial roofs in Northwood and Grandview Heights following tropical storms.

✓Flat Roof Drainage Solutions

Installation of additional scuppers and tapered crickets that move water off low-slope decks common throughout Palm Beach County commercial properties.

Commercial Roofing Cost in West Palm Beach, FL

Service	Typical Range	What Affects It
Commercial Roof Inspection	$250–$600	Larger buildings near Kravis Center or multi-tenant sites increase time required.
TPO Overlay Installation	$4.50–$7.50 per sq ft	Price moves with insulation thickness and number of rooftop units.
EPDM Repair Sections	$800–$2,200	Varies by tear size and access difficulty in older neighborhoods.
Drainage Upgrade	$1,200–$3,500	Additional scuppers and tapered insulation on flat decks.

Ranges are typical for West Palm Beach, FL and confirmed with an exact written quote before any work starts.

How it works

1
Site Evaluation
Technicians measure roof dimensions, test deck integrity and note existing penetrations on commercial buildings across West Palm Beach and nearby Palm Beach.
2
Material Recommendation
We match TPO, EPDM or modified bitumen to the building's slope, HVAC layout and wind-load requirements for the specific Palm Beach County location.
3
Installation
Crews install insulation, membrane and flashings during approved hours while protecting active business operations in areas like CityPlace.
4
Final Walkthrough
Owner receives a written report confirming drainage performance and seam integrity before the project is closed out.

Pricing

Costs depend on roof size, existing conditions and chosen membrane; ranges below reflect typical West Palm Beach commercial projects.