I moved into a house a few months ago and was looking to assess the situation in my attic with insulation and ventilation. After calling several companies, Konstantin was the most responsive. He came by to take a look and identified that the amount of insulation in the attic was not up to code. He also recommended installing rafter vents. All the work was done perfectly and at a cost that came in below everyone else. I highly recommend Konstantin for all your insulation needs.