Top of the Line

Like anything in our modern way of living, commercial roofing technology is constantly changing.

Staying ahead of the curve in terms of training is of utmost importance. Duro-Last commercial roofing can only be installed by certified contractors who have extensive training in all aspects of the process.

At Great Lakes Roofing and Insulation Systems, Inc. we value continuous education and make it a top priority to attend yearly training seminars to ensure that we are utilizing modern technology and staying up to date with application techniques.

Some topics that are covered at this seminar include general installation and the manufacturing operation. The knowledge we gain from the seminar is taught to ALL employees to provide benefits such as additional safety, increased efficiency, and ultimately to install a higher quality finished product for our clients.


Duro-Last also offers:

  • No fee in-shop training sessions during the off-season.
  • 1 to 2-day proficiency training for experienced contractors.
  • Top of the line retraining programs.


Working with manufacturers like Duro-Last ensures that our questions are answered, our needs are responded to, and our crews are supported. There are nearly 75 quality assurance technical representatives available for any questions we might have to help us continue to grow and improve for YOU.

If you are interested in working with us or have further questions, contact us at 906-647-2916!