A new asphalt flat roof replacement completed by Crown Industrial Roofing. A Crown commercial or industrial roofer removing the old structure on a leaky flat roof.A Crown commercial or industrial roofer laying new membrane to repair a leaky flat roof.

Three High-Quality Roofing Systems
Designed to Protect Your Business

At Crown Roofing Systems, we offer three exceptional roofing systems to replace and repair virtually any commercial and industrial flat roof.


Built-Up Roofing (BUR)

Our proven, hot asphalt-based, multi-ply Built-Up Roofing (BUR) approach is ideal for sectional and complete flat roof replacements and repairs. BUR consists of alternating layers of asphalt and reinforcing materials to create a finished, water-proof membrane.

Developed in wet drizzly England, this reliable, handcrafted method has been sealing and protecting roofs for almost 200 years. Durable and water-resistant, it has proven its effectiveness time and time again in tough Canadian winters.

Ethylene Propylene Diene Monomer (EPDM)

Ethylene Propylene Diene Monomer (EPDM) is a synthetic rubber created from a combination of ethylene propylene and diene, an unsaturated hydrocarbon alkene. The result is the flexible yet highly durable EPDM membrane.

EPDM is widely used in low-slope buildings throughout the United States and around the world. It owes its growing popularity in the U.S. to its longer-than-normal lifespan: up to 25 to 30 years.

We apply EPDM membranes in three thicknesses: 45 Mil (thousandths of inch), 60 Mil and 90 Mil. EPDM is so effective that even the 45 Mil membrane is sufficient for most small- to medium-size roofing jobs.


Thermoplastic Polyolefin (TPO)

Thermoplastic Polyolefin (TPO) is a single-ply reflective roofing membrane made from polypropylene and ethylene-propylene rubber polymerized together. It is installed in a fully-adhered or mechanically-attached system which allows the protective white membrane to remain exposed throughout the life of the roof.

While not as flexible as traditional PVC, TPO is less expensive and generally lasts 15 to 20 years, offering a cost-effective yet dependable alternative.