National Contractors Inc. Share: Roofing Contractor/Sub National Contractors Inc. Visit Website 145 Fifth Street Ewing, NJ 08638 (609) 771-4200 (609) 771-9230 (fax) Rep Info Map Whom to Contact KC Kloda President PO Box 5878 Trenton, NJ 08638 Phone: (609) 771-4200 Fax: (609) 771-9230 Send an Email What's Nearby? Distance: 5 10 15 20 25 50 mi.