Add tilt angle and azimuth before generating a viewshed. Location must also be added. Not sure how to measure the tilt and angle and azimuth? Please see the Protractor tool page and the Obtaining Azimuth Angles Page.
Tilt angles for for flat roofs should be the same angle as the racking.
Tilt angles for residential roofs should be the same angle as the roof plane.
If you are generating viewsheds after you added modules, please hide the modules in the Modules Tab before generating the viewshed. See how to hide modules here.
Updated 2 years ago