To arrange the edges, purchase a horse and a forpower to finish the middle of the roof and ribs.
So that moisture does not fall at the junctions under the roof, these are the locations of the sheets, the window opening or the stove pipe, you need to use the tape-mix. But before proceeding with the installation of the roof, you need to carefully calculate everything, read the relevant literature. In order for the work to be of high quality, you need to adhere to certain rules, you need to approach the installation of the roof with special responsibility.