A dark roof in the Florida sun gets much hotter than the air around it, and some of that heat ends up inside, where the air conditioning has to remove it. A reflective roof sends more of the sunlight back. How much that saves depends on the building, and the best evidence comes from buildings that were measured before and after.
What the studies measured
Researchers at Lawrence Berkeley National Laboratory summarized experiments on individual buildings in California and Florida and found that reflective roofs reduced air-conditioning energy use by 10 to 50 percent, depending on the building and the climate (Heat Island Group, LBNL).
The Florida Solar Energy Center ran one of the clearest commercial tests at a 10,000 square foot school in Cocoa Beach. Its gray modified bitumen roof, with a solar reflectance of 23 percent, was coated with a white elastomeric coating that reflected 68 percent. Over two years of monitoring (FSEC):
Chiller electricity use fell by about 10 percent, roughly 13,000 kWh a year.
Summer weekday demand between 3 and 4 PM dropped by 5.6 kW, a 35 percent reduction.
The coating's reflectance fell from 68 to 63 percent after the first year, as dirt built up.
The peak demand result matters for commercial buildings, because many utility rates charge for the highest demand in the billing period, and summer afternoons are when that peak happens.
What decides the savings on your building
Roof area compared to floor area. A single-story warehouse or retail box gets far more of its heat through the roof than a multi-story office.
Insulation. A well-insulated roof already blocks much of the heat, so a reflective surface saves less on top of it.
Ducts and equipment above the ceiling. Ductwork in a hot plenum under the roof gains heat, and a cooler roof reduces that.
Operating hours. Buildings cooled during the day, when the sun is on the roof, benefit most.
Keeping it clean. The FSEC coating lost some reflectance in a year. Washing a white roof during maintenance keeps it working.
Ways to get a reflective roof
On a new roof, white TPO or PVC membranes are reflective from day one. We compare those systems on our roof replacement page. If your current roof is dry and sound, a reflective coating or a recover can add reflectance without a full tear-off, which is covered on our re-roofing page. A coating over wet insulation will not last, so a moisture check comes first.
Estimating it for your building
The simplest estimate starts with a year of electric bills, the roof area, and the current roof color and insulation. We can walk through those numbers during a free inspection. Large, flat, single-story buildings, like the warehouses we roof in Lakeland, are usually where the savings are easiest to see.
Since the Surfside collapse in 2021, Florida has required condominium associations to study and fund the major structural parts of their buildings. The roof is one of them. For many associations it is also the component with the shortest remaining life, which makes it the one that drives reserve contributions in the next few budgets.
Who has to do a SIRS
A structural integrity reserve study, or SIRS, applies to condominium buildings with three or more habitable stories. Buildings with four or fewer units are exempt, and ground-floor parking does not count as a habitable story (Reserve Advisors). The deadline for the first study was extended to December 31, 2025, and studies must be updated at least every 10 years.
The roof is a required component
A SIRS must cover the roof along with the load-bearing structure, fire protection, plumbing, electrical, waterproofing, and windows and exterior doors. For each, the study estimates remaining useful life and replacement cost, and the association must fund reserves to match. Unlike older reserve rules, owners cannot vote to waive reserves for these items.
What HB 913 changed in 2025
House Bill 913 took effect on July 1, 2025 and gave boards more flexibility (Building Mavens):
Reserves can be funded with special assessments, loans, or lines of credit, not only regular assessments, with approval from a majority of the voting interests.
After a milestone inspection, an association can pause SIRS funding for up to two budget years to pay for the structural repairs that inspection found, for budgets adopted by December 31, 2028.
The definition of which buildings are covered was clarified, including how ground-floor parking is counted.
Why roof data changes the reserve numbers
A reserve specialist or engineer estimates the roof's remaining life, often from a visual review and the installation date. Two roofs installed the same year can be in very different shape. A roof with dry insulation, closed seams, and clear drains may have years more life than the age alone suggests. A roof with wet insulation under the membrane may have less.
Giving the study real condition data helps set a realistic number instead of a conservative guess. Useful inputs include:
A written roof inspection with photos of seams, flashing, and drains.
Moisture scan results or core samples showing whether the insulation is dry.
Records of past repairs and maintenance visits.
Whether the roof qualifies for a recover instead of a full tear-off, which changes the replacement cost.
Stretching the roof's life on purpose
Every year a roof lasts past its estimate lowers the pressure on reserves. Regular maintenance keeps drains clear and seams closed, which is where flat roofs on low-rise condo buildings usually fail first. When the roof is near the end, a recover over a sound roof can cost less than a tear-off, and a reflective membrane lowers cooling costs for top-floor units.
We are roofers, not engineers or reserve specialists, and we do not prepare a SIRS. What we can give your board and your reserve professional is a clear, photo-documented picture of the roof's condition to build the study on. Associations in St. Petersburg and Clearwater, where many low-rise condo buildings sit near salt water, often start there.
Florida shortened its property insurance claim deadlines in December 2022, and many building owners still work from the old timelines. If a storm damages your roof, the clock starts on the day of the loss, and missing it can bar the claim entirely. This is a practical overview, not legal advice. Your policy and your agent or attorney have the final word.
The deadlines
Senate Bill 2-A amended section 627.70132 of the Florida Statutes. It cut the time to report a new or reopened property insurance claim from 2 years to 1 year, and the time for a supplemental claim from 3 years to 18 months (Clyde & Co).
New claim: notice within 1 year of the date of loss.
Reopened claim: notice within 1 year of the date of loss.
Supplemental claim: notice within 18 months of the date of loss.
The dates run from the date of loss, not the date you found the damage (Merlin Law Group). A leak that shows up in spring from a storm last October is already months into the window.
An example: if a storm damages your roof on October 15, 2026, notice of the claim is due by October 15, 2027, and any supplemental claim by April 15, 2028.
Commercial policies can be stricter
The statutory deadlines are the outer limit. Commercial policies usually also require prompt notice of a loss, and some set their own timelines for proof of loss. Read the conditions section of your policy, and report damage as soon as you know about it rather than waiting to see how bad it gets.
SB 2-A also ended assignment of benefits agreements for property policies issued on or after January 1, 2023, so a contractor generally cannot take over your claim. You stay in control of it, which also means the documentation is your job.
What to document after a storm
Dated photos and video of the roof, the edges, and rooftop equipment, from a safe position.
Interior damage: ceiling tiles, walls, inventory, and equipment, with the location of each leak.
The date and the storm, with a note of the weather that day.
Receipts for emergency work such as tarping or temporary patches. Policies generally expect you to prevent further damage.
Your roof's condition before the storm: past inspection reports, maintenance records, and photos.
The last item is the one most owners lack. Adjusters look for pre-existing wear, and a dated report showing the roof was sound before the storm is strong evidence. It is one of the practical reasons to keep a maintenance program with a photo report after every visit.
How a roofer fits in
A roofer can make the roof watertight, document the damage with photos and notes, and meet your adjuster on the roof to walk through the findings. We do all three after storms, and our inspection page describes what a documented report includes. For coverage questions, talk to your agent or a property insurance attorney.
By late September 2026, the Atlantic had produced seven named storms and not one hurricane. It is the first time since 1914 that the season has stayed hurricane-free this late (Wikipedia summary of NHC data). For building owners in Florida, that is a relief. It is not a reason to skip the roof this fall.
Why this season has been so quiet
A very strong El Nino has driven wind shear across the Caribbean and Atlantic to record levels. By September 10, the season had set the record for the latest first hurricane of the satellite era, and wind shear was the strongest for that time of year since 1979 (The Weather Channel). NOAA had forecast a below-normal season in May and kept that call in its August update, at 7 to 13 named storms and 2 to 6 hurricanes (NOAA).
The season runs to November 30
Late storms are not rare on Florida's Gulf coast. Hurricane Milton made landfall near Siesta Key on October 9, 2024, and crossed central Florida as a strong storm. Forecasters this year have made the same point: a quiet season does not mean your area will not see a storm before it ends.
Florida did not escape entirely. Tropical Storm Bertha affected the state's coast in July, and ordinary summer thunderstorms test drains and seams every week from June to September.
What a year without a hurricane still does to a roof
UV and heat keep aging the membrane. Seams and flashing sealants dry out whether or not a storm arrives.
Summer downpours find the weak spots. Many leaks show up after heavy rain, not wind, because clogged drains and low spots hold water.
Debris builds up. Leaves, packaging, and dust collect around drains and scuppers over the summer.
Rooftop work adds up. HVAC service visits during the hot months leave punctures and loose panels behind.
A fall checklist for commercial roofs
Walk the roof after the next heavy rain and look for water still standing after 48 hours.
Clear drains, scuppers, and gutters, and replace missing drain strainers.
Check flashing at rooftop units, walls, and edges for gaps or loose metal.
Look at the paths technicians use to reach equipment for punctures.
Photograph the roof. A dated baseline helps with any insurance claim later.
If you would rather have it done for you, a post-season inspection in December covers all of it and gives you a written report for next year's budget. Owners who want those visits on the calendar every year usually move to a maintenance program.
Plan bigger work before the code changes
If the inspection points to a replacement, timing matters this year. The 9th Edition of the Florida Building Code takes effect on December 31, 2026, and the permit date generally decides which edition applies. We explain what changes in our post on the new code.
Florida updates its building code every three years, and the 9th Edition takes effect on December 31, 2026. If you own or manage a commercial building and have roof work on the calendar for the next few months, the date matters more than it usually would, because the edition that applies to your job generally depends on when the permit application is filed.
The permit date decides which code applies
Engineers reviewing the new edition note that permit applications filed before the effective date are generally reviewed under the current 8th Edition (JRH Engineering). Building departments can differ on the details, so confirm with the office that will issue your permit. For a roof replacement planned for early 2027, a few weeks either side of December 31 can change which rules the design has to follow.
Recovering a roof that already has two layers
Today, the code does not allow a new roof over a roof that already has two or more layers. The owner has to tear off to the deck. The 9th Edition adds an exception to the existing-roofing rules in Section 706.3: where two roof coverings exist and the upper one is removed, the remaining covering can stay if it is adequate as a base for the new roof (FRSA).
In plain terms, some double-layer roofs that would have needed a full tear-off may only need the top layer removed. That can cut disposal cost and time on large buildings. Whether the lower layer is adequate still depends on its condition, so core samples and a moisture scan decide it, not the calendar. Our re-roofing page explains how we check a roof before recommending a recover.
A second revised exception lets existing vapor barriers or self-adhered membranes that are adhered to the roof deck stay in place and be covered with an additional membrane layer, instead of being scraped off.
More places that must be flashed
Section 1503.2.1 now lists roof edges, penetrations, changes in roof slope or direction, and changes between roof covering types as locations that must be flashed (FRSA). For low-slope roofs there is a new exception where the change in direction or slope is less than 25 degrees.
Each roof covering section, including built-up, modified bitumen, and single-ply, now states that flashing must follow the chapter and the manufacturer's installation instructions. Good contractors already work this way, but it is now written into the code for every system.
Lightning protection and coastal fasteners
A new Section 1510.8.6 adds flashing compatibility requirements where a lightning protection system is installed on the roof covering. Many commercial roofs in Florida carry air terminals and conductor cables, and the attachments are a common source of small leaks.
Engineers also point to new corrosion-resistant fastener and connector standards for buildings within 3,000 feet of the coastline (JRH Engineering). That matters for properties near the water in St. Petersburg and Clearwater, where salt already shortens the life of standard fasteners.
What does not change
Wind design stays on ASCE 7-22, so design wind pressures are not being raised by this edition (Permit Place).
The 2022 state law exemption from the 25% rule for roofs already built to the 2007 code or later is still law. Our repair page has a calculator for it.
Leaks do not wait for code cycles. If water is coming in, repair it now and plan the bigger project separately.
What to do if you are planning roof work
Ask your contractor which edition your project will be permitted under, based on the planned application date.
If your roof has two layers, ask whether the new recover exception could apply once the top layer is removed.
On coastal buildings, ask what fasteners and edge metal are specified, whichever edition applies.
Get a current roof inspection so the scope is based on the roof's real condition.