PPS 6 Planning Archaeology and the Built Heritage·Page 60·E10

Render and External Finishes

Guidance on appropriate render treatments for historic buildings, including sand and aggregate selection to match character and historical accuracy.

To render over stone and brick finishes will not normally be acceptable because of the resulting change to the building's character. Equally it will be wrong to strip render to expose stonework if it is clear that the building was historically rendered. When considering a new render particular attention should be given to the choice of sand and aggregate in the mix, as this choice will affect both colouring and texture. Modern rendering techniques such as dry dashing are rarely appropriate.

Source — /Users/richardhill/Documents/planning-arch-project/data/documents/regional/PPS 6 - Planning Archaeology and the Built Heritage.pdf