(1) The relevant building surveyor may require that the owner or builder carrying out building work for which a building permit has been issued arrange for the testing of any material used in the building work.
(2) The relevant building surveyor may, as a result of tests carried out under subregulation (1), prohibit the use of any material that—
(a) does not meet the requirements of these Regulations; or
(b) is found to be unsuitable or unfit for the purposes for which it is intended.
(3) Tests required under subregulation (1) must be carried out by an Accredited Testing Laboratory or a Registered Testing Authority or an approved person or organisation.