The application for listed building consent consists of 3 elements of work: 1) Replacement of existing felt flat roof to dormer window and guttering, with new lead rolled flat roof to match existing flat roof to extension below. The existing felt flat roof is in poor condition and is reaching the end of its serviceable life. 2) Replacement of existing Georgian style softwood window to dormer with new purpose made window with 4 No. glazed panels per casement to match the replacement windows installed to the existing cottage. The existing window is a factory produced window which is in poor condition and is reaching the end of its serviceable life, this is also not in keeping with the vernacular of the existing cottage. 3) Replacement horizontal sliding sashes only to the existing living room and kitchen wndows ( W1 and W2) to the North Elevation. This is replacement of the sashes only, the existing frames are to remain in place to prevent any damage to the historic fabric. The exiting sashes and glazing are not original units and are poorly manufactured thus cannot be opened. It is proposed to remove the sashes and replace with puropse made units to match the existing section sizes incorporating slim depth double glazed units. This will be decorated to match the existing units.