Firebrick Liners

(1)  Fireplace liners shall be not less than,

    (a)   50 mm thick for the sides and back, and

=

    (b)   25 mm thick for the floor.

    (2)  Firebrick liners shall be laid with high temperature cement mortar conforming to CAN/CGSB-10.3, “Air Setting Refractory Mortar”.

    (3)  Joints between a firebrick liner and the adjacent back-up masonry shall be offset.

Article 9.22.2.2. Ontario Regulation 332/12 Building Code,   Information published by oncodes.ca for educational purposes only.