Blue Knight Hardwood Floors, of Mercer County New Jersey, is a family owned and operated business, established in 1986 and is a leader in the field of wood floor sanding & refinishing, repair and installation projects. We proudly do our own work. We do not use sub-contractors. We were the first to offer Dust Containment Sanding & Refinishing in the area using a patented dust collection system with HEPA filtration, which actually exhausts the dust during the sanding process outside your home.