SBS (Styrene-Butadiene-Styrene) modified bitumen is a premium multi-ply commercial roofing system engineered for durability in Alberta's extreme climate. The SBS polymer modifier gives the membrane rubber-like flexibility, allowing it to expand and contract with Edmonton's dramatic temperature swings without cracking or splitting. Our certified crews install SBS systems using torch-applied, cold-adhesive, or self-adhering methods depending on your building's requirements and fire-code constraints. SBS roofs are ideal for industrial facilities, retail centres, warehouses, and low-slope commercial applications where reliability and longevity are non-negotiable.
SBS (Styrene-Butadiene-Styrene) modified bitumen is a commercial flat roofing system made from asphalt reinforced with a synthetic rubber polymer. The rubber modifier gives the membrane flexibility in extreme cold — a critical property in Edmonton, where temperatures regularly drop below –30°C. SBS is applied in multiple plies for redundant waterproofing protection and is one of the most trusted commercial roofing systems in Canada.
A properly installed SBS modified bitumen roof has a service life of 20 to 30 years in Edmonton's climate. Longevity depends on installation quality, roof slope, drainage design, and maintenance frequency. Regular inspections every 2–3 years can identify minor issues before they require costly repairs.
SBS is specifically formulated for cold climates. The rubber polymer modifier keeps the membrane flexible at temperatures as low as –25°C to –30°C, preventing the cracking and splitting that can occur with standard bitumen in Alberta's winters. It also handles Edmonton's freeze-thaw cycles and heavy snow loads effectively.
SBS modified bitumen typically costs $12–$20 per square foot installed in Edmonton, depending on the number of plies, attachment method (torch, cold-applied, or self-adhered), insulation requirements, and roof access. A 5,000 sq ft commercial roof generally falls in the $60,000–$100,000 range. Marlex Roofing provides itemized estimates at no charge.
Most major SBS manufacturers offer 15–25 year material warranties; some premium two-ply systems extend to 30 years. Marlex Roofing backs all commercial installations with a 5-year workmanship warranty in addition to the manufacturer's coverage. Warranty length depends on the membrane thickness, ply count, and whether the system is installed by a manufacturer-certified contractor.
Often yes — SBS systems are well-suited for recover installations over an existing structurally sound built-up or single-ply roof, which avoids tear-off costs and disruption. Marlex Roofing performs a moisture survey and adhesion test first; if more than 25% of the existing roof is wet or compromised, a full tear-off and replacement is recommended instead.
Marlex Roofing serves Edmonton, St. Albert, Sherwood Park, Spruce Grove, and Leduc, Alberta. Call (780) 232-4973 or email info@marlexroofing.ca for a free, no-obligation estimate. Every project is backed by a 5-year workmanship warranty.