Cleaning buildings is an industrial process which should be handled by specialists. Often, though, general building operatives (and even householders) have attempted cleaning without understanding many of the health, safety and environmental implications. This Digests sets out to provide building owners, contractors, operatives, building designers and local authorities, with basic advise on three important issues relevant to building cleaning (especially matters relating to health and safety): legislation, procedures and good practice, and discharging waste to the environment.