Therefore, the thin layers of the solution and rough bricks are more preferable in stove masonry /since they give small cracks /, especially since thin seams are better to hold the clay that is painting during overheating. To reduce the cracking of seams, as much sand as possible is added to the clay in order to reduce the shrinkage, but at the same time the solution becomes less plastic /which makes it difficult to make thin seams /, and the dried seam becomes less durable, especially for the gap.
