Customer Testimonials

Over the past several years, and two different houses, I have purchased just about every service that GNI sells. I just wanted to say that I have always been pleased with the people I have dealt with, their skills, professionalism, and dedication to doing the best job possible. It makes one aspect of home ownership less stressful!

Bill Rathborne, London

The insulators were great, as was the sales rep. I will be back for more!

Bob Bray, Gravenhurst

I am very pleased with the service; crew and sales representative.

Carol Ann Douglas, Guelph

The guys that did the installations were quite professional.

Charlie Parsons, Simcoe

Your sales rep addressed my needs to a "T". Also, I have to congratulate the installers who were extremely knowledgeable and I appreciate their workmanship. Thanks so much!

Jennifer Peters, Markham

We live in an older home and recently had it insulated and air sealed by Great Northern Insulation. Since the work was completed, we’ve noticed a dramatic decrease in our heating and air conditioning bills, as well as much more comfort in our home. Dollar for dollar, proper insulation is an effective way to save energy.

Lou Brehm, Woodstock

Thank you for all the help and thoughtful staff.

Louise Parsons, Kerwood

Excellent job! We will certainly use Great Northern Insulation again.

MelBarr Design Build Inc., London

Great work! Quite satisfied with the results.

Paul Graham, Peterborough

I was pleased with the quick response I received from Great Northern. Their installers were courteous, tidy and efficient.

Sandra Elliott, Kitchener

I am very happy with your work. It’s nice to see a sub-contractor that takes care to protect things and cleans up well after they’re done.

Tony Ronco, Peterborough