Sash Window Refurbishment Whilst we would always recommend complete box sash replacement as it is most cost effective over the time and most reliable way to ensure smooth operating energy efficient windows, in some cases, complete replacement may not be possible or may not be necessary. On such occasions we can refurbish existing box frame and install new timber sashes into existing frames. We can do this with single glazed or double glazed sashes, as long as the existing box

Why choose timber windows over uPVC?. As tempting as it may be to replace old windows with uPVC ones – especially when household finances are squeezed, there are few points to take into consideration when making decision about windows.