Flat roof repair in Jacksonville is a different job from patching a shingle roof: water sits on a low-slope roof instead of running off, so a small seam failure or clogged drain can put hundreds of gallons against your building. Cache Roofing repairs, replaces, and installs flat and low-slope roofing systems, including TPO and modified bitumen, on homes, additions, garages, and commercial buildings across Jacksonville and Northeast Florida. If you have ponding water, a bubbled membrane, or a stain spreading across a ceiling that needs roof leak repair, we inspect the whole roof and give you a written repair or replacement scope.
Signs Your Flat Roof Needs Repair
- Ponding water that stays on the roof more than a day or two after rain
- Open, lifted, or wrinkled seams in the membrane
- Blisters or bubbles where moisture is trapped under the surface
- Cracked or alligatored coatings and exposed base sheet
- Rust or separation at metal edge, drains, scuppers, and pipe flashings
- Stains on ceilings or walls below, especially near HVAC curbs and drains
- Debris and vegetation clogging drains and scuppers
Low-slope roofs rarely fail all at once. They fail at details, which is why a roof inspection that checks every seam, drain, and penetration is the first step. Our post on the true cost of ignoring minor roof leaks shows what happens when a small flat roof leak is left for a season.
Flat Roof Systems We Install and Repair
TPO (thermoplastic polyolefin) is a single-ply membrane with heat-welded seams. It is light in color, reflects heat, and is a common choice for commercial roofs and modern homes with flat sections. We install new TPO roofs, weld repairs into existing TPO, and replace failed flashings.
Modified bitumen is an asphalt-based system installed in layers, often with a granulated cap sheet. It is durable, handles foot traffic well, and is repairable with compatible materials. We repair and replace modified bitumen roofs and re-flash penetrations.
Roof coatings can extend the life of a sound flat roof by sealing minor surface wear and reflecting heat. Coatings are not a fix for a saturated or failed roof, so we test the substrate first and tell you honestly whether a coating, a repair, or a replacement makes sense.
Where a flat roof doubles as a rooftop deck or balcony, we combine the roofing scope with our waterproofing systems built for foot traffic.
Our Flat Roof Repair Process in 3 Steps
- Inspection and moisture check. We walk the roof, inspect seams, drains, flashings, and edge metal, look for trapped moisture, and photograph everything. You receive a written scope that separates repair from replacement.
- Repair or replacement. For repairs, we clean and prepare the area, weld or adhere compatible material, and re-flash penetrations. For replacements, we remove the failed system where required, repair decking, install insulation or cover board as specified, and install the new membrane.
- Water test and documentation. We check drainage, confirm seams and terminations, clean the site, and hand over photos and warranty documents.
Flat Roof Repair vs. Replacement
Repair makes sense when the membrane is generally sound and the problem is a seam, a flashing, or a drain. Replacement is the better call when moisture has saturated the insulation, seams are failing in multiple places, or the roof has been patched repeatedly. Florida’s 25 percent rule can also apply: when a large share of a roof section is replaced within a year, the rest may need to be brought up to current code, which affects the repair versus replace decision. Our post on flat roof vs. pitched roof explains how low-slope systems differ from the rest of the house.
What Affects the Cost of Flat Roof Work in Jacksonville
Pricing depends on the system (TPO, modified bitumen, or coating), roof size, how much of the existing roof must be removed, insulation and cover board requirements, the number of drains, curbs, and penetrations, edge metal, and access. Repairs are priced by the scope of the failed detail, not the whole roof. Every estimate is itemized in writing, and roof financing is available for larger replacements.
Flat Roof Warranty
Membrane manufacturers may cover qualifying product defects, with terms that depend on the product and, for some systems, on installation by a contractor approved for that system. Cache Roofing provides written workmanship coverage for the period in your agreement. See our roofing warranty page for how coverage works and how to keep it valid.
Why Choose Cache Roofing for Flat Roofing
- Florida Certified Roofing Contractor, license CCC1336213, and insured
- Flat roofs, waterproofing, and commercial work are core services, so low-slope details are routine for our crews
- Repairs made with compatible materials, not a generic patch over a TPO or modified bitumen roof
- Photo documentation and a written scope before and after the work
- Storm damage documented for insurance claims when needed
Learn how to spot bad sealants on your roof if a previous repair is already failing.
Flat Roofing Across Northeast Florida
We repair and replace flat and low-slope roofs in Jacksonville, including Riverside, Springfield, San Marco, Southside, and Arlington, and in Jacksonville Beach, Atlantic Beach, Neptune Beach, Ponte Vedra Beach, St. Augustine, and Palm Coast. See all service areas or call (904) 887-7663.
Frequently Asked Questions
How much does flat roof repair cost in Jacksonville?
Cost depends on the size of the failed area, the membrane type, and whether drains, flashings, or insulation are involved. A seam or flashing repair costs far less than a section replacement, and we give you a written price after inspecting the roof.
Is TPO a good choice for a flat roof in Florida?
Yes for many buildings. TPO reflects heat, has welded seams, and is widely used on commercial and residential flat roofs in Florida. The right system still depends on the building, foot traffic, and budget.
Can a flat roof be repaired instead of replaced?
Often, yes. If the membrane is sound and the insulation is dry, seams, flashings, and drains can be repaired with compatible material. Saturated insulation or widespread seam failure usually calls for replacement.
How long does a flat roof last in Jacksonville?
Service life depends on the system, drainage, UV exposure, and maintenance. Keeping drains clear and having seams and flashings inspected regularly extends the life of any flat roof.
Do you repair flat roofs on houses, not just commercial buildings?
Yes. We work on flat sections over additions, garages, porches, and modern homes as well as on commercial roofing projects.