With over 23 years of experience we truly value our commitment to community and our great standing with the Better Business Bureau. NexGen Exteriors uses only top quality roofing, siding, windows and gutter products with the very best warrantees. From GAF (Timberline) roofing to Alside windows and siding, we leverage our relationships to get you the best roofing, siding, window and gutter brands at a great price.