They may even think that only large companies with thousands of employees are capable of doing such a task. However, a simple, quick roof repair job can be completed on your property by just yourself. All you need are a few tools and a few hours of your time. Here is what to expect when you decide to replace a damaged roof. First, you need to find a good contractor. You can start by asking for a list of potential contractors to give you a starting point for choosing one.