The following instructions assume you already know the dimensions and design of the roof trusses you intend to build. If you do not, or need specially designed roof trusses (and not manufactured ones) contact a Roof 101 professional for assistance.
The roof of your house or building can undergo serious damage, weathering, disintegration, or malfunctioning at any point throughout its lifetime. These things may be prevented or even taken care of with roof repair and similar projects. Sometimes, however, repair will not be enough and you will need a new roof entirely.