Great Northern Insulation

After a couple of years of having mice and insects come into the basement and the home inspector telling me I needed more insulation in the attic, I reached out to a couple of insulation companies and these guys came highly recommended by the energy rebate technician. I had them come in to increase the blown in insulation in the attic and re-insulate the basement after all the old insulation was removed.

I'm happy with the attic even though there was a mess left over in the bedroom I had to clean up after they left.

The basement is another story. During the spray foam install, I complained that they were missing areas and I had them redo certain spots. As some materials were wet, I couldn't do a proper quality control inspection and as a home owner, I shouldn't have to inspect a professional companies work while they are on site. Once the job was done, I did look further into it and was not impressed with what I found and the repairs I had to do. A picture is worth a thousand words.

I contacted them, one of the managers came over to investigate and told me he was going to bring it up higher. Well weeks later, still no word and no discussions on how this can be fixed.

I'm sorry but their promise to exceed my expectation fell way short of the goal line.
There is insulation on the walls, I will give them that.

The Moe crew were very polite and thoughtful. They worked quickly and efficiently. They cleaned up so "that we would not know they had been here". Moe reviewed everything they had done as per the quote with me and asked if I had any questions. We were very pleased with their work. They were also respectful about Covid protocols. Many thanks

Company referred to me by a realtor.
Smooth booking process and very organized.
Service professionals at the house were prompt, friendly and knowledgable and efficient.
Thanks to Gabe and Chris for a great experience.

I wasn't told they had sealed up every vent in my attic thus enabling my roof shingles to bake. I've had to replace the roof shingles. Roofers and building inspectors were shocked that GNI had completely sealed my attic. GNI says its what they call "Hot Attic". They refused to refund any portion of the $14,000 I paid for the insulation so I could put it towards the new roof shingles. BEWARE, they don't tell you your attic will be completely sealed and you need air flow or else be prepared to replace your roof shingles every few years. GNI took no responsibility at all. They've taken advantage of a senior woman to line their pockets. Do your research and ask your local building department about completely sealing off a roof before you purchase spray foam from GNI. Lesson learned - STAY AWAY FROM GREAT NORTHERN INSULATION!!!

I have recommended this company many times and they are very good.
Promo and excellent clean up.
I will highly recommend them over and again when needed.

Great work every time.

From quote to installation, the customer service was a 10+. During installation, both crews on both days were great. Friendly, helpful, and informative. Fabulous job and I'm so excited to save on heating costs and finally have a warm house.

We used Great Northern Insulation for the first time. They were Fast reliable service. Very friendly professional service. Reasonable cost. I would recommend Great Northern Insulation to anyone looking for quality and professional work.

Great option for insulation friendly and helpful. Showed up on time left my garage clean very professional. Had great ideas for insulation of my garage door. Even carried it in a delivery for my wife. Very satisfied would recommend to anyone.

Henry and Frank did a great job insulating the attic. They were both professional in their work and made sure everything was cleaned up. Matt was thorough on his quote and explained everything.

Sometimes you get the true measure of a company when things don't go perfectly. The quote process was very easy and professional. The guys who did the work were prompt and fast. The quality of the work was great. However, after they left I noticed my garage door button wasn't working. I sent an email, expecting to hear back in a few days. They got back to me within 12 hours and were super friendly about it. Someone came out and fixed it right away. It turned out that the person who put in the garage door opener decades ago, spliced some wires together with some tape that got old. The spray foam knocked it loose a bit and got in there. So not really the fault of the Great Northern guys. I really appreciated how fast they were at responding and how friendly they were