Modified bitumen roofing system by Bullarco

Modified BitumenCommercial Strength

Proven durability meets modern performance. Modified bitumen roofing systems deliver exceptional weather protection, flexibility, and longevity for low-slope applications.

Commercial Grade • 20+ Year Performance • Weather Resistant

Modified Bitumen Systems

Engineered for performance, modified bitumen roofing systems combine the proven reliability of asphalt with advanced polymer technology.

SBS Modified Bitumen

Styrene-Butadiene-Styrene

Rubber-modified system offering superior flexibility and temperature performance. Ideal for climates with temperature extremes.

Key Features

  • Superior flexibility at low temperatures
  • Excellent elongation properties
  • Self-healing characteristics
  • UV resistant granule surfaces
  • Multiple installation methods
  • Excellent puncture resistance

Benefits

  • Withstands thermal cycling
  • Resists cracking in cold weather
  • Self-seals minor penetrations
  • Long-term performance

Best Applications

Residential Low-SlopeLight CommercialSteep Slope Applications

Installation Methods

Torch AppliedCold AdhesiveSelf-Adhered

APP Modified Bitumen

Atactic Polypropylene

Plastic-modified system designed for high-temperature performance and UV resistance. Excellent for hot climates and high-traffic areas.

Key Features

  • Superior high-temperature stability
  • Excellent UV resistance
  • Outstanding flow resistance
  • Dimensional stability
  • Enhanced aging characteristics
  • Multiple surface options

Benefits

  • Performs well in hot climates
  • Resists softening at high temps
  • Long-term color stability
  • Reduced maintenance needs

Best Applications

Commercial BuildingsIndustrial FacilitiesHigh-Traffic Roofs

Installation Methods

Torch AppliedHot AsphaltCold Process
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Weather Protection

Exceptional resistance to wind, hail, and extreme temperature variations provides reliable protection.

  • Superior wind uplift resistance
  • Hail impact resistance
  • Temperature cycling durability
  • Moisture barrier properties
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Proven Durability

Decades of proven performance in commercial applications demonstrate exceptional longevity.

  • 20-30 year service life
  • Proven track record
  • Commercial-grade materials
  • Industry standard performance
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Installation Flexibility

Multiple installation methods allow for optimal application based on specific project requirements.

  • Torch application
  • Cold adhesive systems
  • Self-adhered options
  • Hot asphalt application
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Cost Effective

Competitive initial cost with excellent long-term value makes it an economical roofing solution.

  • Reasonable material costs
  • Efficient installation
  • Long service life
  • Low maintenance requirements
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Repair Friendly

Easy to maintain and repair with readily available materials and straightforward procedures.

  • Simple repair procedures
  • Compatible patch materials
  • Accessible repair methods
  • Cost-effective maintenance
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Fire Resistance

Available with Class A fire ratings to meet building code requirements and insurance standards.

  • Class A fire rated options
  • UL listed systems
  • Building code compliance
  • Insurance approved

Technical Specifications

System TypeMulti-Ply Built-Up
Fire RatingClass A Available
Wind ResistanceUp to 90+ mph
Service Life20-30 Years
Thickness120-180 mils
InstallationProfessional Required
Slope Range1/4:12 to 2:12
Temperature Range-40°F to 180°F

Installation Considerations

  • Professional installation required for warranty
  • Substrate preparation critical for performance
  • Weather conditions affect installation timing
  • Proper ventilation essential for longevity
  • Drainage design impacts system performance
  • Regular inspections extend service life

Modified Bitumen vs Other Low-Slope Systems

Compare modified bitumen against other popular low-slope roofing systems to understand the advantages of each approach.

FeatureModified BitumenTPOEPDM
Initial Cost
Low to Moderate
Competitive commercial pricing
Low to Moderate
Similar price range
Low
Most economical option
Lifespan
20-30 Years
Proven long-term performance
15-25 Years
Newer technology track record
20-25 Years
Established performance history
Installation Complexity
Moderate
Requires skilled application
Moderate
Heat welding required
Simple
Adhesive or mechanically fastened
Weather Resistance
Excellent
Superior in temperature extremes
Good
Good overall performance
Excellent
Outstanding weather resistance
Puncture Resistance
Excellent
Multi-ply reinforcement
Good
Single membrane system
Good
Rubber flexibility helps
UV Resistance
Excellent
Granulated surface protection
Excellent
White membrane reflects UV
Good
Carbon black provides protection
Repair Ease
Excellent
Simple patch and seal repairs
Moderate
Requires welding equipment
Good
Patch repairs straightforward
Energy Efficiency
Good
Cool roof options available
Excellent
White membrane reflects heat
Fair
Black membrane absorbs heat

Installation Process

1. Substrate Preparation

Clean, dry, and properly sloped substrate is essential. Any repairs or improvements made before membrane installation.

2. Base Sheet Application

Base sheet mechanically fastened or adhered to provide foundation for the modified bitumen membrane system.

3. Membrane Installation

Modified bitumen membrane applied using torch, hot asphalt, or cold adhesive methods depending on system specification.

4. Cap Sheet & Finishing

Granulated cap sheet provides UV protection and weather resistance. Flashing and detail work completed.

Why Choose Modified Bitumen?

Proven Performance

Decades of successful commercial installations demonstrate reliable long-term performance.

20+ YearsField Proven
Weather Resistance

Excellent performance in temperature extremes and severe weather conditions.

All ClimatesFlexible
Maintenance Friendly

Easy to inspect, maintain, and repair with readily available materials.

Simple RepairsCost Effective

Reliable Commercial Roofing Solutions

Modified bitumen systems offer the perfect balance of performance, durability, and value for low-slope roofing applications.

View Commercial Projects

Ready for Modified Bitumen Roofing?

Discover the durability and performance of modified bitumen systems. Get your free estimate for commercial-grade roofing today.