I spoke to Louis who is the owner of the Window and Doors Specialist Company on many occasions re installation of windows and one door for our rental property in Newmarket. He was very professional and very patient with me making suggestions and explaining the product in detail. After receiving quotes from three other companies, Louis gave me the best one. The day of the installation, Tato the installer was prompt and courteous and very professional. At the end of the job, he cleaned up as if nothing took place. He was absolutely amazing! My husband and I were extremely happy and have already recommended them to friends and family.