For pouring the foundation required formwork. Keep up on the field with thought-provoking pieces from Ex-CIA director . To protect the foundation from moisture, many simply cover the walls and bottom of the formwork roofing material and then handle all the joints with bitumen. So that moisture has not penetrated through the attachment, they are also better prosmolit. In the lower part of the foundation poured a thin layer of expanded clay. If a large fireplace on the second set floor, still constructing the foundation. An exception is made only if the floor is wooden. In this case, simply put on a floor layer (thickness 15 mm) of solid refractory material, which is covered with sheet iron. The first layer of bricks laid on the clay-cement mortar.
When the foundation is ready, you need to wait five or six days, so it is completely dry. How to arrange the firebox? Construction of the fire a great many. The most simple – a niche of straight walls. For the inner walls of the fireplace usually use fire-resistant or refractory brick, and a special small brick kiln – "mezhigorku. But even a special brick oven has a porous structure, and therefore actively absorbs moisture. In clutch, he primarily draws water from the solution, making it less ductile. As a result, the solution in the operation of the fireplace perekalyaetsya and masonry cracks. How to cope with this problem? First just to make bricks lost the ability to suck moisture from the mortar. To do this in front of a brick masonry should be immersed in water.