Walls and floors

  • Wall and floor surfaces must be maintained in a sound condition and be easy to clean and, where necessary, to disinfect.

  • Surfaces need to be made of materials that are impervious (ie do not allow fluid to pass through), non-absorbent, washable and non-toxic.

  • Where appropriate, floors must allow adequate surface drainage.


  • Ceilings (or, where there are no ceilings, the interior surface of the roof) and overhead fixtures must be constructed and finished in a way that prevents dirt from building up and reduces condensation, the growth of undesirable mould and the shedding of particles.


  • Windows and other openings must be constructed to prevent dirt from building up.

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