Great Northern Insulation came to our cottage on Lake Erie to spray foam the underside of the house. The crew faced a nasty job. The outside temperature was -4C, the ground was frozen, and before they could spray they needed to remove old fiberglass insulation that housed a dead raccoon, a live raccoon, and a bee hive. The crew worked through the challenges with professionalism and diligence. We are very satisfied with the work completed and now find the cottage much, much warmer and not at all drafty as it was before. I would highly recommend Great Northern Insulation for a spray foam job....we are glad we had the work done. Thanks to the crew, and to Jason in scheduling who worked with us in getting the crew out when the weather co-operated.