http://www.westpoplarredangus.com/News/disadvantages-of-upvc-windows/ There are many advantages to uPVC windows, but the argument rages on as to whether UPVC windows or replacement windows are environmentally friendly or not. There are many differences between timber and uPVC windows. The process that is required to make PVCs is highly toxic and this in turn leads to toxic by-products. On top [.] Related posts: uPVC or Timber Framed Windows? The Advantages of Instal... Wed, 10 Mar 2010 09:57:09 CST en