Roofing Cost - Version 1.0 It's time for a new roof. The old one is looking shabby, with damaged shingles or dents from hail. You pick up the yellow pages, call a few roofing companies, but the question lingers in your mind. What is a fair bid? How do I know what I should pay? And most of all, is there anything that I, the homeowner, can do to bring the price of the bid down? As a professional roofer, I will be answering these questions in this article.First, it is important to understand how a professional roofing company makes a bid on a job, and what factors are included.The roofing contractor will always come out and inspect your roof first. They will be looking at such things as:How many layers of shingles need to be removed (tear off)?