http://www.thinkbigusa.com/News/the-maintenance-and-repair-of-upvc-windows/ UPVC is a very durable material and with proper maintenance and repair can have a life in excess of 20-25 years. There are many differences between timber and uPVC windows. Compared to products such as timber windows no matter what type and style of window , uPVC windows , be they double glazed or triple [.] Related posts: Cleaning uPVC Windows And Doors. The Advantages of Installing uPVC Windows.... Thu, 07 Jan 2010 20:10:25 CST en