Obtaining a contractor's license in most states is also very easy. It provides you, the customer, with some protection, i.e., insurance, bonding. The basic task of a contractor is to manage the construction job. Failing to obtain a license only demonstrates the contractor's incompetence. To find out about the status of a contractor's license, contact the contractor's registration office in your state, for example the Washington State Department of Labor and Industries has an on line service which allows you to verify contractor licensing, insurance and bonding, it also lists any open claims.
Past experience suggests that specialists can do the job better, faster, and cheaper.
A skilled and versatile craftsman can learn how to install many different products, however, he may not have the appropriate license, and you may be paying him for practicing on your home. Any of these statements could be true. You might save money. Our experience suggests that it is unwise to take these statements at face value. You may end up with a poor quality job, requiring redoing.