It s easy to set up there.
Install antenna on the roof.
Whatever you do do not put holes in your roof to attach your antenna.
You use wall mount brackets to hold the mast in place.
Mount the antenna wall installations.
Use 6 waterproofing membrane before you install the j mount on the roof the length of the membrane roll in the link provided above is 75 feet.
Make sure the area where you are installing the j pole is dry and clear from debris.
Not sure where else you may be able to use it but you only needs a piece of about 6 x 8.
In order to mount an antenna on your roof without damaging it you should attach the antenna to the gable the fascia or the chimney.
I ve used channel master cm 9025 3 heavy.
You can also buy non penetrating mounts that use weights rather than screws to hold them in place.