Some questions to ask a roofing contractor include how long the repairs will take, whether it is safe to be in the residence during repairs and what costs are associated with the repairs. It is good to ask a variety of questions when interviewing different roofing contractors.
Another good question to ask a roofing contractor is whether or not he has insurance. Reputable contractors stay up-to-date with their business insurance policies, including having liability insurance and worker’s compensation. This not only protects the contractor's business, but it can help protect the homeowner as well.
You should also ask about the contractor's business license and where he got his education and training in roofing practices. Ask the roofing contractor whether he uses sub-contractors to help complete the work. It helps to know exactly who will be doing the work. Some contractors manage and supervise the work, but they hire out laborers to complete the jobs. Others only use sub-contractors for specialized roofing materials, such as installing a green roof or solar panels. It is also a good idea to ask the contractor what types of warranties he provides..
You should also talk to the contractor's previous customers, if you can get ahold of them. This includes asking whether they would use the contractor again, whether the contractor completed the work on time and whether there were any hiccups along the way.