Douglas-Jones R, Hughes J, Jones S & Yarrow T (2015) Growing old gracefully?. Focus, (2015), pp. 32-33. http://conservation.historic-scotland.gov.uk/focus-magazine-2015.pdf
First paragraph: Time not only affects organic organisms such as us humans: inanimate objects including buildings are also subject to ageing, manifested in the transformation of building materials over time. Elements that form the fabric of the building can develop a patina, or crust. These signs of age can be perceived in different ways depending who the viewer is; they add an age value that can not be replicated any other way.
Conservation; Material Trasformation; Value; Authenticity; Cultural Heritage
Focus, Issue 2015