Modified Bitumen & Built-Up Roofing (BUR) in Florida
Multi-ply modified bitumen and built-up systems that deliver rugged, redundant waterproofing for demanding low-slope commercial roofs.
When a commercial roof needs rugged, redundant waterproofing, modified bitumen and built-up roofing (BUR) deliver. These are multi-ply systems — layer upon layer of reinforced membrane — so there's no single point of failure. That redundancy makes them a proven choice for Florida low-slope roofs that see foot traffic, rooftop equipment, and the occasional dropped tool.
Modified bitumen is the modern evolution of the classic built-up 'tar and gravel' roof. Polymer-modified asphalt membranes (APP and SBS) add flexibility, UV resistance, and easier installation while keeping the multi-ply toughness owners have trusted for decades. Florida Commercial Roofs installs torch-applied, cold-applied, and self-adhered modified bitumen, as well as traditional built-up systems, matched to your building and its use.
For property owners who want a time-tested, puncture-resistant, repairable roof — and who value redundancy in a climate that throws heavy rain and hurricanes at their building — mod-bit and BUR remain a smart, durable investment.
The Case for Multi-Ply Redundancy
A single-ply roof relies on one membrane; a modified bitumen or built-up roof relies on several bonded plies. If one layer is nicked by a dropped tool or worn by heavy foot traffic around rooftop units, the layers beneath still keep water out. On Florida commercial buildings with constant HVAC service, exhaust fans, and maintenance traffic, that redundancy is genuine insurance against leaks.
These systems are also highly repairable. Because they're built in layers of compatible materials, a damaged area can be cut out and rebuilt seamlessly, and a reflective cap sheet or coating can renew the surface. That makes mod-bit and BUR a long-term-value play for owners who plan to hold a building for decades.
Built for Florida Rain and Heat
Florida's downpours test every flat roof. Multi-ply systems shine here because their redundant membranes and robust base flashings resist the standing water and wind-driven rain our storms deliver. Modern SBS and APP modified membranes flex with the building and the heat instead of cracking, and granulated or coated cap sheets shield the asphalt from the UV that would otherwise dry and embrittle it.
We finish most Florida mod-bit and BUR roofs with a reflective surfacing — a granulated cap sheet or a field-applied coating — to bring down surface temperatures and extend service life. It's the same principle behind a cool single-ply roof, applied to a multi-ply system, and in our climate it makes a real difference.
How It Works
Free Roof Inspection
We evaluate your low-slope roof, traffic, and equipment load to confirm mod-bit or BUR is the right fit.
System Design
We specify the ply configuration, application method, and surfacing suited to your building and Florida code.
Professional Installation
Trained crews install each ply and reinforced flashing with strict attention to safety and detailing.
Surfacing & Warranty
We apply reflective surfacing, inspect the finished roof, and register your material and workmanship warranties.
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