And, last, but not the least, ensure that the sunroom contractor no way compromises on the quality of materials or construction work. Have a detailed discussion with him, prior to start of work, on matters like, quality and grade of materials he plans to use, time frame for completion of work, guarantee/warranty on his work, etc. The contractor or the company’s representative will provide you with complete details about the above mentioned queries, after making a personal visit to your home and inspecting the site.