I need to refelt my shed roof but haven't really got a clue. I'm quite handy so I should be able to do it myself but I'm not sure what I need to do it. Obviously felt, I've priced it up but how do I lay it. Is there a certain way to cut it before hand. Do I need to nail it down or use adhesive. Do I have to tape over the edges. Any help would be very much appreciated. Cheers in advance.