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Whether you are looking to fix, upgrade, or install a new roof, Ernie Colegrove Construction has the experts that can help you with any residential or commercial roofing project.

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Ernie Colegrove Construction provides complete siding and trim installation. Whether you need vinyl, metal, or fiber composite siding, Ernie Colegrove Construction has the experts that can help you.

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Ernie Colegrove Construction offers professionally installed seamless gutters that reduce the possibility of leaks that will protect your home and commercial building.

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Founded in 1977, Bitumar Inc. is a privately owned company specializing in the production of liquid bitumen used in asphalt blends for road paving as well as for the roofing industry.

Bitumar owns and operates two plants in Montreal, Qc. The company also owns plants in Baltimore, MD, through its affiliate Bitumar U.S.A. and in Hamilton, ON, through its affiliate Bitumar (Hamilton) Inc.

Radiating from these 3 centers of production, the company offers many different modified asphalt grades for paving as well as for roofing, covering Eastern Canada and the North-East, Mid-West and Mid-Atlantic coast of the United States.

Bitumar now employs more than 185 permanent employees including highly qualified professional & technical people needed for the operation of such an organization.

Company Management is built around individuals with a long and varied experience both in the process industry and in the asphalt business.

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Our mission

To produce safely, high quality, environmentally friendly asphalt products, that contribute to value-added productivity and long-term cost savings for our customers.

To operate with a spirit of excellence, fully exploiting our core strengths to deliver superior customer service and ensure future growth of our company.

Our values

At Bitumar, we promote certain values. We would like these values to guide and direct management decisions, relations with customers and suppliers, and relations among employees. We also want these values to permeate our work environment. The following are the values we seek to encourage:

  • Results orientation
  • Entrepreneurship
  • Trust and respect
  • Family spirit and teamwork


Built-up roofing asphalts and industrial grade asphalts produced to roofing products manufacturer's specifications and ASTM-D312, CAN-CSA A123.4:

  • BUR Types 1, 2, 3 and 4
  • Coating