When we had DTV installed back in 04, the installer wanted to put it on the roof and there was a 3" pipe in the ground already where the old Primestar dish was located. I told it it would be easier to mount it there instead of climbing up on the roof. Plus, all the cables were there.....hardly any wiring on his part. I had removed the old Primestar dish in anticipation of them mounting the DTV dish there. The installer complained because he had to go buy some large u-clamps to mount the dish to the pole. I can easily clean the dish and LNBs if needed and I just had a new metal roof installed so no way I would even consider mounting a dish to the roof now.