MODIFIED BITUMEN ROOFING
Modified bitumen roofing combines asphalt's proven performance with modern polymer technology. Pro Specialty Services installs torch-applied and self-adhered mod-bit systems for Florida flat and low-slope roofs.
Expert Modified Bitumen Roofing Services in Lake County
Modified bitumen (mod-bit) roofing takes the time-tested performance of asphalt and enhances it with polymer modifiers for improved flexibility, durability, and temperature resistance. It's the modern evolution of built-up roofing—easier to install, inspect, and repair.
At Pro Specialty Services, we install both SBS (rubber-modified) and APP (plastic-modified) bitumen systems using torch application, hot mopping, or self-adhering methods. Our crews understand which system works best for each situation.
Modified bitumen offers an excellent middle ground—the redundancy of multiple plies like BUR, but in pre-manufactured sheets that ensure consistent quality. For flat roof reliability without the complexity of hot asphalt kettles, mod-bit is often the answer.
Compare modified bitumen to other flat roofing options including BUR and TPO membranes. Learn about flat roof maintenance practices.
Why Modified Bitumen Works for Florida
Flexibility in Florida's temperature swings is critical. SBS-modified bitumen maintains flexibility even in our occasional cold snaps, while handling 150°F+ rooftop temperatures without softening excessively. This temperature range tolerance prevents the cracking and splitting that plagued older asphalt systems.
Multi-ply redundancy provides the same peace of mind as built-up roofing. A 2-ply modified bitumen system means two complete waterproofing layers—if one gets damaged, the other still protects your building.
Easy inspection and repair make mod-bit owner-friendly. Unlike the hidden layers of BUR, you can visually inspect modified bitumen seams and surfaces. Repairs are straightforward—patch material can be torch-applied or adhered directly.
Modified Bitumen Systems We Install
We offer complete mod-bit systems for every application:
SBS Modified (Rubber)
Superior flexibility and cold-weather performance. Excellent elongation for building movement. Our most common recommendation.
APP Modified (Plastic)
Heat-resistant with excellent UV stability. Good for high-temperature applications.
Torch-Applied Mod-Bit
Traditional heat-welded installation creates strong, waterproof seams.
Self-Adhered Mod-Bit
Peel-and-stick application eliminates open flame. Ideal for occupied buildings and wood decks.
Ready to Get Your Roof Fixed?
Schedule your free inspection today. We'll provide an honest assessment and transparent pricing.
Our Modified Bitumen Installation Process
Deck Preparation
Remove old roofing, repair substrate, prime wood decks.
Base Sheet
Install mechanically-fastened or adhered base layer.
Cap Sheet
Apply modified bitumen cap using specified method.
Flashings
Complete all edge, wall, and penetration flashings.
Current Promotions
Senior Citizen Discount
65+ Years Old
We honor our seniors with special pricing on all roofing services. Ask about our senior discount when you call.
Call UsModified Bitumen Benefits
Multi-Ply Redundancy
Two or more waterproofing layers for backup protection.
Proven Polymer Technology
40+ years of field-proven performance data.
Temperature Flexibility
Handles Florida's temperature extremes without cracking or softening.
Easy Inspection
Visible seams and surfaces make inspection straightforward.
Simple Repairs
Patch repairs are quick and effective with matching material.
Mineral or Smooth Surface
Granule cap for UV protection or smooth for coating application.
What Our Customers Say
"PSS installed a 2-ply modified bitumen system on our office building. The torch-applied seams look solid and we've had no issues through heavy rain season. Very professional work."
"We use mod-bit on most of our flat-roof buildings because it's reliable and repairs are easy. Pro Specialty Services does quality installations and responds quickly when we need them."
"Needed to re-roof while the restaurant stayed open. PSS used self-adhered modified bitumen—no torch flames near our building. Roof is solid and installation was seamless."
The PSS Advantage
Experienced Installers
Our crews are trained in torch, hot mop, and self-adhesive application methods.
Quality Materials
We use premium SBS and APP modified bitumen from trusted manufacturers.
Proper Base Attachment
Mechanically-fastened or fully-adhered base sheets for wind resistance.
Complete Flashings
Metal and membrane flashings properly detailed at all edges and penetrations.
Warranty Options
Up to 20-year manufacturer warranties on complete systems.
Safe Installation
Self-adhered options available for occupied buildings or fire-sensitive sites.
Common Questions
Properly installed modified bitumen typically lasts 20-25 years. Premium systems with proper maintenance can exceed this. The granule surface protects the membrane from UV, and periodic coating can extend life further.
SBS (Styrene-Butadiene-Styrene) is rubber-modified and offers superior flexibility—better for roofs with movement or temperature extremes. APP (Atactic Polypropylene) is plastic-modified with better heat resistance and UV stability. We typically recommend SBS for Florida conditions.
When performed by trained installers, yes. However, we offer self-adhered modified bitumen for situations where open flame isn't appropriate—wood decks, occupied buildings, or buildings with combustible contents.
Often yes. If the existing roof is structurally sound and not holding excessive moisture, mod-bit can be applied as a recover system. We'll inspect and advise on the best approach.
Modified bitumen offers multi-ply redundancy and easier repairs. TPO offers heat-welded seams and better energy efficiency with its white surface. Both are excellent choices—the best option depends on your specific priorities and building use.
Annual inspections to check seams and flashings, clearing debris from drains, and addressing any damage promptly. The granule surface can be recoated when it begins to wear to extend roof life.
Related Services
Serving Lake County & Beyond
We provide Modified Bitumen Roofing services throughout Central Florida.
Ready to Get Started?
Schedule your free Modified Bitumen Roofing inspection and estimate today. We'll provide honest recommendations and transparent pricing.