For interior decoration, use a tree, well dried and smoothly string. The content of the resin in it should be as low as possible. The bathroom’s fittings should be made of galvanized steel, which gives metallic details to corrosion resistance. The first row of construction is built from more dense foam blocks, which are connected by cement. To fasten the subsequent rows, an adhesive mixture is used. In this case, the vertical and horizontal level of masonry is controlled.