The Tison require one of the following forms of hearth protection
if not installed directly on concrete poured on earth:
1) Any UL, ULC, or Warnock Hersey Listed Type 1 hearth board.
2) Any non-combustible material.

In Canada, floor protection must extend 18" from the front of the stove
and 8" from the sides and rear of the stove.

Floor Protector