Great Northern Insulation

We contacted GNI for an estimate on increasing the insulation in our attic. When the estimator came, she (Alana) said we would require an analysis on the vermiculite in our attic to be sure it didn't contain asbestos before any work could be done. She provided us with the name of a company to do the analysis. Luckily, there was no asbestos so we could proceed. Two estimates were provided, and once we made our decision, our area manager for GNI contacted us with an appointment time to have the work completed. The gentlemen arrived early on the scheduled day, checked out the work area, and quickly set up the job site, including laying down drop cloths and cardboard to protect our flooring. The three men worked efficiently and completed the job in a few hours, including the clean up, and even took a few photos of the attic space so we could appreciate the depth of the cellulose insulation.
I recommend GNI for an attic insulation upgrade because they returned my calls promptly, came to their appointments on time or early, and completed the job as specified. I cannot comment on their price as no other insulation company answered my requests for estimates.
Barb