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.

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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

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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

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

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

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

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

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

Flat Roof Specialists

Why Choose Modified Bitumen?

The gold standard for flat and low-slope roofing in commercial and residential applications.

Multi-Layer Protection

Modified bitumen creates a redundant waterproofing system with multiple plies that seal together—far more reliable than single-membrane installations.

Superior Waterproofing

Self-sealing lap joints and fully adhered installation eliminate the water intrusion points common in single-ply and built-up systems.

Thermal Flexibility

Polymer-modified asphalt stays flexible in cold and stable in heat—critical for Ontario's extreme temperature swings.

Proven Longevity

With proper installation and maintenance, modified bitumen roofs deliver 20–30+ years of service life on flat and low-slope structures.

Impact & Foot Traffic Resistance

The thick, multi-ply construction handles foot traffic, equipment loads, and hail better than most single-ply alternatives.

Easy Maintenance & Repair

Damage is straightforward to locate and patch—no specialized equipment or proprietary materials needed for routine repairs.

Complete Flat Roof Services

Professional modified bitumen installation and maintenance for flat and low-slope roofs throughout Peterborough.

Full Roof Installation

Complete tear-off and re-roof with proper insulation, vapor barrier, and multi-ply modified bitumen system

Repairs & Patching

Leak detection, blister repair, and seam re-sealing to extend your existing roof's service life

Drainage Solutions

Tapered insulation, scupper installation, and proper slope design to eliminate ponding water

Insulation & Vapor Barriers

Polyiso or EPS insulation board and proper vapor management for Ontario's climate

Flashing & Edge Details

Drip edge, parapet caps, wall-to-roof transitions, and penetration sealing with compatible materials

Maintenance Programs

Scheduled inspections, drain cleaning, and preventive repair to maximize roof lifespan

The Bullarco Flat Roof Difference

Torch-Applied Expertise

Certified in torch-down application for the strongest, most reliable membrane adhesion

Redundant Waterproofing

Two-ply minimum with staggered seams eliminates single points of failure

Proper Slope & Drainage

We address ponding water issues with tapered insulation and drainage design

Manufacturer Warranties

We follow strict installation specs to secure full manufacturer warranty coverage

Complete Edge Detailing

All terminations, edges, and penetrations sealed to manufacturer standards

Photo Documentation

Every phase documented for your records and warranty purposes

Modified Bitumen Roofing Investment

Understanding the factors that determine the cost of your flat or low-slope roofing project.

Roof Size & Access

Total square footage, building height, and equipment access all affect labor and material costs

Membrane Grade

SBS vs APP modified bitumen, granule cap sheet options, and base sheet specifications affect pricing

Insulation Requirements

Ontario building code R-value requirements and energy efficiency goals influence insulation thickness and type

Existing Conditions

Tear-off of existing layers, deck repairs, and addressing drainage issues add to project scope

Number of Plies

Two-ply systems cost more than single-ply but provide significantly better longevity and leak resistance

Penetrations & Details

HVAC units, vents, skylights, and parapet walls require careful flashing and add detailing time

Transparent Flat Roof Estimates

Every modified bitumen quote includes a thorough roof inspection, detailed scope of work, and honest pricing.

Free Roof Inspection

We assess your flat roof, identify existing issues, and discuss all options

Detailed Written Quotes

Complete scope with membrane specs, insulation details, and warranty info

System Options

We present good/better/best configurations so you choose the right fit

No Hidden Costs

Tear-off, disposal, flashing, and all labor included in pricing

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Response within 24 hours • Serving Peterborough & the Kawarthas

Flat Roofing in Peterborough & the Kawarthas

Professional modified bitumen installation for flat and low-slope roofs—built to handle our local climate.

Service Area

Serving Peterborough, Kawartha Lakes, and surrounding communities within 60km.

Built for Ontario Flat Roofs

Snow Load & Ice Damming

Flat roofs are especially vulnerable to ice dam formation. Proper insulation, drainage, and membrane selection prevent the freeze-thaw damage that destroys inferior flat roof systems.

Ponding Water Prevention

Ontario rains and snowmelt can pool on flat surfaces. Our installations include proper slope design and tapered insulation to ensure positive drainage across the entire roof.

Extreme Temperature Swings

From -30°C winters to +35°C summers, modified bitumen's polymer-modified asphalt stays flexible and sealed through Ontario's most demanding temperature cycles.

Communities We Serve

Professional flat roof installation and repair throughout Peterborough and the Kawartha Lakes region.

Peterborough

Kawartha Lakes

Lakefield

Bridgenorth

Ennismore

Buckhorn

Bobcaygeon

Fenelon Falls

Lindsay

Omemee

Cavan-Monaghan

Douro-Dummer

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Modified Bitumen vs Other Low-Slope Systems

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

Feature	Modified Bitumen	TPO	EPDM
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