Joyce Manufacturing Company Director of Sales & Marketing   About Joyce Manufacturing: Since 1955, Joyce Manufacturing Company (JMC) has been providing residential building products to dealers and home improvement companies across the Eastern region of the US.  Joyce is a proudly family owned and operated business. Our American manufacturing company manufactures and distributes All Season Vinyl Sunrooms, Multiple Lines of Vinyl Replacement Windows and Patio Doors through a dealer network across 28 states located throughout the Midwest, Northeast and Southeast.  Our products are well known for their excellent quality, performance and ease