Application and interpretation
25.—(1) Regulation 28 in respect of resistance to ground moisture of floors and walls, and weather resistance of walls, shall not apply where the building is intended to be used wholly for—
(a)storing goods, provided that any person who is habitually employed in the building is engaged only in storing, caring for or removing the goods; or
(b)a purpose such that compliance with regulation 28 would not serve to increase protection to the health or safety of any person habitually employed in the building.
(2) Regulation 29 applies only to a dwelling.
(3) In this Part—
“Contaminant” includes any substance which is or could become corrosive, explosive, inflammable, radioactive or toxic and includes deposits of faecal or animal matter;
“Floor” includes any base or structure between the surface of the ground, or the surface of any hardcore laid upon the ground, and the upper surface of the floor;
“Moisture” includes water in liquid, solid, semi-solid or gaseous form but not flood water;
“Radon affected area” means any area designated as such by the Health Protection Agency in the publication ‘Radon in Dwellings in Northern Ireland: 2009 Review and Atlas’; and
“Wall” means any opaque part of the external envelope of a building that is at an angle of 70° or more to the horizontal and includes piers, chimneys, columns and parapets which form part of the wall.