This depends on the amount of insulation already present in your property. However, adding insulation has been proven to improve the energy efficiency of your home and decrease your heating bills, this is more obvious in older properties or where single glazing is still in situ.
Dunbeath
Dunbeath is a village in south-east Caithness, Scotland on the A9 road. It was the native home of Neil M. Gunn (1891-1973), writer of The Silver Darlings, Highland River etc., most of whose stories are embeded in Dunbeath and also its Strath. Dunbeath has a very rich historical landscape, the site of various Iron Age brochs and a very early middle ages reclusive site (see Alex Morrison's archaeological survey, "Dunbeath: A Cultural Landscape".) Of Dunbeath's landscape, Gunn composed: "These small straths, like the Strath of Dunbeath, have this intimate beauty. In boyhood we get to know every square lawn of it. We incorporate it literally and also our memories hold it. Birches, hazel trees for nutting, pools with trout and a periodically visible salmon, river-flats with the wind on the bracken and also disappearing rabbit scuts, a wealth of wild flower and also small bird life, the rising hawk, the unforeseen roe, the ancient graveyard, thoughts of the folk who once lived much inland in straths and hollows, the past and also today held in a moment of day-dream." ('My Bit of Britain', 1941.). There is a neighborhood museum/landscape analysis centre at the old town institution.