I have a low-sloped roof, somewhere between 2/12 to 3/12 max. It has been shingled and reshingled since it was built. A roofer gave me an estimate, which includes water and ice guard some 3 feet past the warm wall. When I read the manufacturers’ warranty (Certainteed) requirements, it said that for low slope roofs the whole roof should be covered with water and iceguard. I told this to the roofer, and he said OK.
What bothers me, why is it that I - the client - have to do the research for the professional roofer. He surely must have known about it, and the cost saving is not that great. The saving grace is that he always complies with my requests. How should I read this situation?