Commercial Roofing
Roof Repair and Replacement Contractors. Tar Gravel, Torch-On, EPDM, TPO, PVC, Coatings, DecTec, Spray Foam, Metal

Commercial Roofing, Calgary, Red Deer, Edmonton, Fort McMurray, Lloydminster, Medicine Hat, AB, AlbertaCommercial Roofing Contractors with Exclusive and Industry Standard Solutions

Commercial Roofing Repair and Replacement Calgary, Red Deer, Edmonton, Fort McMurray, Lloydminster, Saskatoon, Regina, Medicine Hat, Lethbridge, Canmore, Cranbrook, Kelowna, Vancouver, Whistler, Winnipeg, Toronto and points between. Alberta, British Columbia, Saskatchewan, Manitoba, Ontario.

Industry Standard Systems Our Roofers Install.
Repair, Re-Roof, Maintenance, Coatings, Deck Waterproofing.

Our commercial roofers specialize in the disciplines of: Modified Bitumen (SBS 2 Ply Torch On) Membrane. Advanced Built Up (Hot Rubberized Asphalt and Cold Applied Engineered Liquid Rubber). Traditional Tar and Gravel Roofing. Single Ply (EPDM, TPO, PVC). Metal / Steel Roofs and Cladding. Rooftop Deck Waterproofing - DecTec. Engineered Roof Coatings (Liquid Rubber, Spray Foam, Elastomeric). Edmonton commercial roofing photo in upper-right using EPDM.

Proprietary Systems We Install.
Innovative, Engineered, Advanced Repair and Replacement Systems.

GRS has innovative, technologically advanced proprietary roofing solutions for commercial roofing repair, replacement, recovery, and restoration. 

Built Up Flat Roof - Tough Roof "The Last Flat Roof You Will Ever Need".
Tough Roof, which is proprietary to GRS in that we are one of the few authorized installers in British Columbia, Alberta, and Saskatchewan for this significantly advanced roof replacement system (Tough Roof Re-Surfacing Video). Tough Roof is an excellent multiple ply, hot applied - rubberized asphalt, built up roof. Tough Roof utilizes synthetic rolls between layers of liquid asphalt rubber. In areas where a reflective roof is an advantage, Tough Roof can be coated with Tia Coat, a reflective top coat or topped with traditional pea gravel. For extreme weather conditions in BC, Alberta, And Saskatchewan, you can't beat the advantages of a multiple layer (strength), monolithic (no seams), rubberized asphalt (for expansion and contraction) roofing system.

Commercial, Flat Roofing, Built Up Flat Roof - Spray on Liquid Rubber.
GRS has developed a proprietary built up roofing system based on the advanced technology available with engineered modified liquid rubber. Using cold applied liquid applied rubber, our liquid rubber built up roofing system is similar to Tough Roof in that synthetic layers are set between layers of liquid membrane. Instead of hot applied liquid rubber asphalt, this system uses cold applied liquid rubber. This system also has the advantages of multiple layer strength, it is monolithic - it has no seams, it is also rubberized and has elasticity of up to 1000% for huge expansion and contraction (which is important in Canada), and can also be topped with reflective coatings or traditional gravel as with Tar and Gravel Roofing. 


Commercial, Metal Roofing, Restoration of Metal Roof Systems.
GRS has developed a system for Metal Roofing that is either leaking or is beyond its useful life cycle. Metal roofing on commercial and industrial facilities is typically low slope and they tend to leak at vent areas, fasteners, and at the eaves or gutters (ice back up is common). Utilizing the advancements in engineered liquid rubber technology which nano-technology has brought us, GRS has a monolithic liquid rubber coating solution that stops the leaks and can extend the life span of metal roofing at least ten years. We now have hundreds of thousands of square feet of roof coatings on facilities through-out BC, Alberta, Saskatchewan, Manitoba, and Ontario. We can confidently say this is this most significant advancement in metal roof restoration the industry has seen. The success of this system has been extraordinary. 

Services and Solutions

Services include; repair, maintenance, and installation of; flat roofing (low slope roofing), steep slope, roof snow and ice removal, roof cleaning, roof restoration and coating (elastomeric, liquid rubber, spray foam), roof renovations, roof-top unit retro-fits, cap flashing, architectural metal, custom roof construction processes, metal panel / sheet metal, re-sloping, drains, deck waterproofing, skylights, various tile, shake, and asphalt roofing shingles. Calgary commercial roofing project to right before assembly installed.

Commercial Roof, Lethbridge, Canmore, Cranbrook, Kelowna, Vancouver, Whistler, British Columbia, BC, Flat, Metal, Coating

Wikipedia Article on Materials Available

Professional Accreditation and Credentials

Licensed | Certified | WCB | Incorporated | Insured | Better Business Bureau | Red Seal Journeymen | Exclusive Lifetime Workmanship Guarantee

References and Project Portfolio

Our world class commercial roofing client reference and project portfolio is something we take seriously. It is an honor to be trusted with the most sensitive commercial work sites the roofing trade has to offer.

Click Here to Review our Roofing Project Portfolio.

Contact Us 24 Hours 7 Days 365 Days a Year.

For Roofing Estimates or Information Call +1.877.497.3528. Email: info@grscanadainc.com. Click Here to Request a Free Commercial Roof Quotation.

General Roofing Systems Canada (GRS) Commercial Brochure (Download PDF).

Saskatoon, Regina, Saskatchewan, Winnipeg, Manitoba, Toronto, Ontario, Liquid Rubber, TPO, Torch-On, EPDM, PVC, Tar Gravel








Page Topics: Metal, Flat, Deck Waterproofing, Roofing Contractors Calgary, Calgary Roofing, Red Deer, Edmonton, Edmonton Roofing, Fort McMurray, Lloydminster, Saskatoon, Regina, SK, Medicine Hat, Lethbridge, Canmore, AB, Cranbrook, Kelowna, Vancouver, Whistler, BC, Winnipeg, Manitoba, Toronto, Ontario and points between. Alberta, British Columbia, Saskatchewan, Manitoba, Ontario.


General Roofing Systems Canada (GRS)