Originally Posted by jjeff
Just a guess, but if you have snow on your roof I'd assume it would be winter. If it's winter I'd guess the leaves would be off your trees.
I'm thinking your better winter reception has more to due with the lack of leaves than snow. AFA the metal roof, my guess is it would only make things worse, but how bad is hard to tell. As someone else mentioned the further away you can get your antenna from your roof(metal or asphalt) would be better.
Ideally you'll find someone else who when from a asphalt to metal roof, was in a weaker signal area and also had his antenna a short distance from the roof. I just don't know if you'll find someone like that who'll read your message, otherwise it's just best guesses.
I personally like metal roofs and would be of the mind to put what you want on the roof and deal with the consequences later. You may need a more directional antenna or higher mast but you should still be able to keep your OTA, it just may require a bit of tinkering.
Actually, before I added the research comm preamp, I was struggling with signal, and as soon as the asphalt was showing on about 1/2 of the roof the signal took a dive, and the trees have not yet budded. Yes I have full signal now but my LOS is directly into 2 trees, so I'll see how much loss I have then, hopefully it stays full and I can afford take a risk on losing some signal with the metal roof.
But yes I was hoping to get lucky and talk with someone in the same boat as me. Bad odds yes, heh.