Sash Windows Berkshire sash windows are best for period homes in UK as they preserve the traditional qualities but are free from common complications rattles, jams and draughts. By installing timber or sash windows and doors to your UK property, you will increase the desirability to your home whilst restoring it to its former glory. As a style of window, the sash is both understated and elegant which Adds to its striking outlook and Everlasting fame as Sash Windows Berkshire can confirm during the many repairs and reconstructions we have carried out.