Modified Bitumen Sheet (SBS) – Robertson & Hachfield Limited

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Flat Roofing

Modified Bitumen (SBS) Roofing Systems Built for Canadian Conditions

Modified Bitumen Sheet (SBS) roofing is a reliable and durable flat roofing solution widely used on commercial and industrial buildings. Designed to withstand extreme temperature fluctuations, SBS roofing combines asphalt with polymer modifiers to enhance flexibility, strength, and weather resistance. At Robertson & Hachfield Limited, we install and repair SBS roofing systems that provide long-term waterproofing and dependable performance in demanding environments.

Our SBS roofing services focus on proper surface preparation, secure membrane installation, and precise detailing at seams, flashings, and penetrations. These details are critical to preventing leaks and maintaining system integrity. With decades of roofing experience, our team ensures every SBS roofing project is completed using proven methods and quality materials, delivering consistent results across the Greater Toronto Area.

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Flat Roof Projects
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Years of Roofing Experience

Why SBS Roofing Is a Smart Flat Roof Solution

Designed for Strength and Flexibility

Enhanced Flexibility

Polymer-modified membranes adapt to temperature changes, reducing cracking and stress.

Superior Waterproofing

Multi-layer protection and strong seams create long-lasting resistance to water intrusion.

Long-Term Performance

Durable materials designed to extend roof lifespan with proper maintenance.

Our Expertise

Trusted SBS Flat Roofing Specialists Since 1964

SBS roofing systems require skilled installation and a thorough understanding of flat roof construction. At Robertson & Hachfield Limited, our experienced roofing professionals install and repair Modified Bitumen systems with precision and attention to detail. We understand how Canadian climate conditions impact flat roofs and design SBS solutions that provide flexibility, durability, and long-term protection.
Our commitment to quality workmanship and safety ensures that every SBS roofing project meets industry standards and client expectations. From new installations to targeted repairs, we deliver dependable flat roofing solutions that minimize disruptions and protect your property. With decades of experience and a strong safety record, we remain a trusted roofing partner across the GTA.

Flat Roof Specialists

Extensive experience working with SBS systems on commercial and industrial properties.
Quality Installation

Proper torch-applied or adhered methods for secure, watertight performance.
Reliable Results

Consistent workmanship, clean job sites, and warrantied roofing solutions.

SBS Roofing Questions

Modified Bitumen (SBS) Roofing – What You Should Know

Modified Bitumen roofing is a proven flat roofing solution when installed and maintained correctly. Below are answers to common questions about SBS roofing systems and our services.

What is Modified Bitumen (SBS) roofing?

SBS roofing is a polymer-modified asphalt membrane designed for flexibility, durability, and waterproofing on flat and low-slope roofs.
Is SBS roofing suitable for Canadian weather?

Yes. SBS membranes are designed to handle temperature fluctuations, making them ideal for Canadian climates.
Is SBS roofing safe to install?

All SBS roofing work is completed following IHSA safety regulations, with full insurance and WSIB coverage in place.
How long does an SBS roofing system last?

With proper installation and maintenance, SBS roofing systems can provide long-term performance and durability.
Do you offer SBS roof repairs?

Yes. We provide professional SBS repairs, including seam repairs, flashing corrections, and membrane restoration.