13.—(1) The Minister may by order prohibit the use of such materials or classes of materials, or such form of construction or such type of equipment, fittings or services in relation to such class or classes of buildings or to such class or classes of works as may be specified in the order, if he is satisfied that such use would be a danger to public health or safety or that such use would contravene any provision of building regulations.

(2) The Minister may by order amend or revoke an order under this section including an order made under this subsection.