I would like to hear opinions on if I can get benefits of thermal mass by stacking bricks or if it's better to use firebricks around my woodstove? -Thanks, I'm sure there are people more knowledgeable than on this subject. We live in Saskatchewan,Canada and we get winters with at least 2-3 weeks of -40 if not real degrees, the wind chill factor and the rest of the winter is -25 to -30 Celsius.