There is no way you are going to hire a company that has not been certified and insured. Here you will be risking your money and other resources. Make certain the firm is recognized by relevant authorities and has been authorized to give door services in your locality. In addition they should have workers who have are skilled and approved to deal with garage doors. Employing an insured firm will make you have peace of mind knowing that everything is covered should any accident or lose occur, you are going to be fully remunerated for it.