A gable style roof is considered to be the easiest type of shed roof framing to work with. essentially you will be building a series of triangular shaped trusses based on the pitch of your roof. you will need to build a number of trusses based on the length of your roof.. Skillion roofs are one of the simplest roof styles used for building sheds. a skillion roof is made up of a single flat plane which slopes from top to bottom. saltbox roofs look like skillion roofs, but with an extra short slope opposite the long angled plane.. This step by step diy woodworking project is about how to build a 8