Time-tested modified bitumen roofing systems combining the reliability of built-up roofing with modern polymer technology for superior weather protection and durability.
Modified bitumen is an advanced asphalt roofing system that evolved from traditional built-up roofing (BUR), combining time-tested reliability with modern polymer technology
Plastic-based modifier that remains flexible in cold weather. Typically torch-applied, creating a strong bond to the substrate.
Rubber-based modifier providing excellent elasticity and resistance to temperature extremes. Can be torch-applied or cold-adhesive.
Two or more layers create redundant waterproofing for extra security
Withstands high winds, hail impact, and temperature extremes
Damaged areas can be patched quickly and economically
Durable surface withstands maintenance personnel and rooftop equipment access
Class A fire rating available with proper substrate and cap sheet
Modified bitumen's superior durability makes it ideal for roofs that require frequent maintenance access or have rooftop equipment
Professional installation, repair, and maintenance of modified bitumen roofing systems throughout Metro Atlanta
Expert torch-applied and cold-adhesive installation for new roofs and replacements
Fast response for leaks, blisters, and membrane damage with permanent torch repairs
Base sheet, ply sheet, and cap sheet installation for maximum protection
Preventative care to maximize your modified bitumen roof's 15-20 year lifespan
Modified bitumen combines the proven reliability of traditional built-up roofing with modern polymer technology for superior performance.
Understanding the two types of polymer modifiers and which is right for your building
Atactic Polypropylene (Plastic-Based)
Cold climates, high UV exposure areas, roofs requiring torch application, and buildings needing quick installation
Styrene-Butadiene-Styrene (Rubber-Based)
Hot climates like Georgia, roofs with lots of movement, cold adhesive applications, and buildings requiring flexible waterproofing
In Metro Atlanta's hot, humid climate, SBS modified bitumen is typically the better choice due to superior heat resistance and flexibility. However, APP systems work well for torch-applied applications requiring quick installation.
Professional application techniques for maximum performance and longevity
Heat bonding with propane torch
Best For: New construction, roof replacements, and projects requiring quick turnaround
Solvent or water-based adhesive application
Best For: Occupied buildings, fire-sensitive areas, and cold weather installations
Hot asphalt application method
Best For: Large commercial roofs, industrial facilities, and budget-conscious projects
Foundation layer mechanically fastened or adhered to deck
Additional middle layer for extra protection
Weather-resistant top layer with granules
Each layer adds protection, with the cap sheet providing the final weather-resistant barrier that protects the underlying layers from UV, rain, and physical damage.
Discover if modified bitumen's multi-ply protection, foot traffic durability, and proven 50+ year track record make it the right solution for your commercial building
We'll recommend the best installation method for your project
Choose protection level that fits your budget and needs
Manufacturer warranties with proven performance history
Understanding problems and how we fix them to keep your roof performing for decades
Trapped moisture or air between plies creates bubbles that can rupture and leak.
Our Solution: Cut and patch blisters, ensure proper venting, and address moisture sources before repair
Age, thermal stress, and UV exposure cause membrane to become brittle and crack.
Our Solution: Torch new membrane patches over cracks or apply coating systems to restore flexibility
Laps between sheets can separate due to poor installation or thermal movement.
Our Solution: Re-torch failed seams, add mechanical fasteners, or install cap strips over problem areas
Foot traffic, falling debris, or equipment installation can puncture the membrane.
Our Solution: Torch-weld patches over damaged areas and install walk pads in high-traffic zones
Standing water accelerates deterioration and can penetrate through seams and laps.
Our Solution: Improve drainage, install tapered insulation, or apply ponding water-resistant coatings
Cap sheet granules wash away over time, exposing asphalt to UV damage.
Our Solution: Apply reflective coating system to restore UV protection and extend roof life 10+ years
Spring and fall roof inspections to catch issues early before they become expensive repairs
Remove debris, clean drains, and prevent organic growth that can deteriorate the membrane
Fix small problems immediately before water infiltration causes structural damage
At 10-12 years, apply acrylic or silicone coating to restore and protect for another 10+ years
Protect high-traffic areas around HVAC equipment with walk pads to prevent membrane damage
Address ponding water issues promptly to prevent accelerated deterioration and leaks
With proper maintenance, modified bitumen roofs regularly exceed their 15-20 year expected lifespan, providing excellent return on investment.
Learn About Maintenance Plans