The most trusted Home Improvement Company in Northern Illinois Specializing in Siding Roofing Windows Doors and Gutters. Please call for Free Estimate Attention Homeowners in Northern Illinois! We are more than confident that you will be satisfied with our prices, products and service. You, as our client, will never come across any hidden costs or surprises with your estimate. Our quotes are your final price. Never a pushy approach to our potential client. Let me just take a moment to introduce our company to you. G.F. Company is locally owned and operated since 1974. We take huge pride in our service, products and workmanship. We will provide you with Lifetime Warranty on BOTH Workmanship and Material. We belong to the Better Business Bureau with an outstanding grade of A+, recipient of complaints free award since 2002. G.F. Company is am Environmental Production Agency Lead Safe Certified Firm. We also have a great reputation on Angie's List. Always fully insured, licensed and bonded. G.F. Company never hires subcontractors to work on your home. We have our own teams of great, honest, and very professional installers, who have full and complete knowledge of work that is being performed on your property. Our teams of employees will always stay respectful of your time and property. Once a crew is assigned to a project they stay on it until it is fully and completely finished. No jumping from one job sight to another. The owner of G.F. Company, Mr. Ariel Zmijewski, checks and monitors each job. He is also Vinyl Siding Institute Certified to make sure that every job is completed to the industry highest standards. You can always call us with any questions, changes or concerns you may have. Please call at (815)547-0159 and you will receive a call back the same day or next at the latest. With over 6,000 very satisfied customers we must be doing something right! Thank you, We are looking forward to be working with you!! -G.F. Company