I have an installation scheduled for next Saturday. My wealthy landlord is in Africa for a month, so I can't get anything in writing specifically allowing E* equipment on the roof. But he ok'd the Voom system, which is still installed and running on locals. I take care of most maintenance here, because he doesn't like to be bothered, and I pay much below average rent as a result. If he were in town, he would likely be annoyed at more requests for permission, when he's obviously already given it. Am I going to have a problem with the E* installer for not having something in writing?