It's the one that
Sadoun calls the "Non-penetrating roof mount". Model NPR4A. There's a picture here
http://www.sadoun.com/Sat/Products/I...roof-mount.htm
Unfortunately my roof is flat, but not flat like a sheet of glass. Over the 50 years that my family has owned the home there have been several times when roofers have applied a hot tar to maintain the sealed integrity of the roof. This results in a surface that has some waves, bumps, etc.
Another question. When I am up there this weekend putting shims in to make the mast PERFECTLY level and plumb, should I remove the dish and the motor mount before doing the leveling, or can I leave everything connected and do my shimming while all is still attached.
Thanks for helping.