bs 6270 Code of Practice for the Cleaning and Surface Repair of Buildings is being revised for publication this autumn. Colin Campbell outlines the changes.
Parts 1 and 2, which each deal with cleaning and repair of different types of materials, will be withdrawn and replaced by:
Part 4 Surface Repair of Natural Stone, Brick and Terracotta (The surface repair of concrete is now dealt with by a cen concrete code.)
Part 5 Cleaning of Natural Stone, Brick, Terracotta and Concrete. This also deals with graffiti removal, though this is to be the subject of a separate code, currently in the early stages of preparation.
These new parts will stress the need for tests and trials before deciding on cleaning and repair methods, advantages and disadvantages of cleaning, and health and safety considerations, and will review recent developments in cleaning and repair materials and methods.
Part 3, covering cleaning of metals, will be reviewed following publication of Parts 4 and 5.
Colin Campbell, of Bickerdike Allen Partners, is chairman of the BSI Technical Committee for bs6270.