Custom Contracting:- We have the training, the background, the experience, and the references to prove we are the best at what we do, and one of the most knowledgeable crew in the local roofing and siding business. Custom Contracting Burlington Roofing & Siding is a premier roofing contractor in Burlington Ontario specializing in roofing and eaves trough cleaning and repair. In business for over 50 years, they proudly serve Burlington and the surrounding area with quality workmanship at affordable pricing.