Question 1

What is the best flat roofing system for a Florida commercial building?

Accepted Answer

TPO is the most popular choice for Florida commercial construction due to its heat-reflective white surface (reducing cooling costs 15–25%), weld-sealed seams, and competitive pricing. For buildings in HVHZ or where redundancy is a priority, modified bitumen provides multiple reinforced layers and has a strong track record in Florida hurricane events. Metal is preferred for long-term ownership scenarios where the higher upfront cost is offset by a 40–60 year service life without membrane replacement.

Question 2

How do I know if my commercial roof needs replacement or can be repaired?

Accepted Answer

The key indicators are system age, moisture saturation level, and remaining insulation value. We perform an infrared moisture survey and core sampling to quantify the percentage of the roof that is wet. As a general guideline: if more than 25% of the insulation is moisture-saturated, replacement is more economical than restoration. If moisture is isolated to specific areas, targeted repairs or re-coating can extend the system life significantly. We provide this analysis as part of our free commercial assessment.

Question 3

Can you install a new commercial roof without shutting down my business?

Accepted Answer

Yes. Commercial roofing projects are routinely completed over occupied buildings. We use a phased approach: completing one section of the roof at a time, maintaining a weathertight barrier at all times, and scheduling noisy work during off-hours when possible. The exception is when tear-off of a built-up roof produces odors or debris that requires temporary tenant relocation in the sections below — we discuss this upfront and plan accordingly.

Question 4

What warranty do commercial roofing systems carry?

Accepted Answer

Manufacturer warranties for commercial systems range from 10 to 30 years depending on the membrane thickness, installation method, and whether a manufacturer representative inspects the installation. TPO systems typically carry 15–20 year NDL (No Dollar Limit) warranties from major manufacturers like Carlisle SynTec, GAF, or Firestone. These warranties require the installer to be a manufacturer-certified contractor, which GreenFL Roofing is for all major flat roofing brands.

Question 5

How often should a commercial flat roof be maintained?

Accepted Answer

We recommend biannual maintenance inspections: one in spring before hurricane season and one in fall after it. Each inspection includes drain clearing, seam and flashing inspection, reapplication of sealant at penetrations, and a written condition report. Most manufacturer warranties require documented maintenance to remain valid. Our maintenance programs are priced annually and typically cost 1–2% of the roof replacement value per year — far less than the cost of an emergency repair or premature replacement from deferred maintenance.

CommercialRoofingSystemsBuiltforFlorida'sDemands

Everything You Need, Done Right

Our 4-Step Process

Commercial Roof Assessment

System Design & Specification

Phased Installation

System Commissioning & Warranty

Commercial Roofing FAQs

ProtectYourHomewithFlorida'sTrustedRoofers