Hong Kong Regulations

BUILDING (CONSTRUCTION) REGULATIONS - REGULATION 46

Construction of chimneys and fireplaces

(1) Every chimney, flue, hearth and fireplace recess shall be-

   (a)  constructed of non-combustible materials of such a nature, quality and
        thickness as not to be unduly affected by heat, condensation or the
        products of combustion;

   (b)  so constructed and of such thickness or, in the case of a flue, placed
        or shielded as to prevent the ignition of any part of any building.

(2) Every chimney shall be so constructed that-

   (a)  the temperature of the exposed faces shall not reach a level that
        would cause damage to nearby parts of the building;

   (b)  the products of combustion shall not escape through the walls of the
        chimney.

(3) Every flue shall-

   (a)  whether inside or outside the building, be so placed or shielded that
        there is neither unnecessary risk of accidental damage to the flue nor
        unnecessary danger to persons in or near the building;

   (b)  terminate in such a position that the products of combustion cannot
        enter nearby windows or other openings, fresh air inlets, mechanical
        ventilation inlets or exhausts. (Enacted 1990)