In the bathhouse, the roof of two types will be appropriate. Single -shield or gable. And since the brooms, carefully prepared from the summer, should be stored somewhere better to make a gable with a attic room. The attic is multifunctional, you can put the inventory for the garden garden, or you can arrange a dryer for clean linen if the attic area exceeds 20 kV. m. You may need tape saws.
With direct construction of the roof, the structure of the rafters is permissible to assemble on the ground. This method is good for those who are hard to work at altitude, from the point of view of safety precautions, not everyone can do this. After assembling it, of course, will need to be lifted upstairs, and it is associated with some difficulties – you will have to use lifting equipment. Can also be assembled immediately on the roof.
The crate for covering the roof will be performed both with intervals and a continuous shield. The continuous coating is better if roofing material or any other roll material is used later. If the plans of slate or metal, then the size of the crate cell should not be more than 25 cm.
In any case, the attic must be waterproofing, permamine, roofing material or other waterproofing films will help in this.