NIJAC Roofing and Insulation is a family based company. We previously owned Hiebert Greenhouses Inc and after selling that company wanted a new challenge. NIJAC specializes in Spray Foam coatings and insulation with grain elevators and Silos as well as large commercial buidings being our speciality. There is no job too small or too large and we travel everywhere in the continental U.S. Charles is an Industrial Engineer and his level of attention to detail ensures a job well done. With great customer service, great products and attention to detail NIJAC Roofing contiues to grow.