Flats 1 And 2, 9 Castle Street, Llangollen, Denbighshire, LL20 8NY
Amnewid ffenestri pren gyda Heritage upvc ar ddrychiadau deheuol a dwyreiniol; adnewyddu ffenestri pren ar ddrychiadau gogleddol a gorllewinol a gosod gwydr dwbl tenau neu dan wactod i gymryd lle'r paneli sengl presennol / Replacing timber windows with Heritage upvc on south and east elevations; refurbishing timber windows on north and west elevations and fitting thin or vacuum double-glazing to replace existing single panes