(A) All wood floor and roof framing shall be kept at least 2 inches away from the chimney masonry, except when 8 inches of masonry is used outside the flue lining, in which case the framing may be built flush with the chimney masonry.
(B) The 2-inch space between the chimney masonry and the floor framing shall be filled with fire resistant material to form a fire stop.
(1992 Code, § 7-35)