We get it. A Better Business Bureau report stated that 73% of homeowners checked the box that home repair and improvement contractors could not be trusted. We understand that and defend our worth with no defensiveness. If you work on a roof yourself, you may void a manufacturer’s warranty and find it difficult to find a contractor who would be willing to take over the work (in fact, in some locations, it might not even be legal in your jurisdiction).
Ranging on the serious side of things, there is a very real danger that the entire roof could collapse if a DIYer tries to replace the entire roof. On the less dangerous side of things, they may nail flashing a few inches off. Even the most innocuous mistake on a roof can result in a compromised area. Even if the area is only 2 inches by 2 inches, that is more than enough to create a sizable hole in the roof – which can result in thousands of dollars in damages to the interior of the home.