He says he's not allowed to "work" on a metal roof, saying that's Dish policy. Some installers are saying it is allowed, while others are saying it's not.
As the OP later added, it's a metal roof, three stories high, and a steep angle. No doubt every other installer would give it one look and say "No LOS".As is standard operating procedure, it would seem, get a 2nd installer out and he'll say "no problem".
You are correct. The second installer said 'no problem.' He replaced the failing LNB in my 61.5 dish, and signal strength on that satellite jumped from 10% average to 60%. He did however confirm that DISH inspectors are going around fining installers for rules violations, and that technically, replacing the LNB in a dish that is bolted to a metal roof is a rules violation.
He also looked over the property and said that he didn't see any place where a large dish could be placed; so, no 118.7 for me.
So, I got my most important goal -- fixing the failing LNB on which much of my HD depends. I am too relieved to be disappointed about not getting a bigger dish that would let me tune in to 118.7 and 129, in addition to the 110 and 119 that I get now.
I do think it's a shame that a well-intentioned installer who wants to please his customers should have to risk a fine to do it. That dish is anchored into pre-war 1x6's and 3/4" particle board, has never leaked a drop of water into the attic, and he did the whole job just by leaning out the window, and not that far either. Had he not done so, with only 110 and 119 left to choose from, DISH would probably have lost me as a customer.