So now that I'm committed to this whole RV camping thing for a few years I'm trying to figure out what I really need to do to keep my trailer in good condition. I purchased it used, but well taken care of. It is stored outside uncovered. This brings up the question of roof maintenance. The trailer is a 2011 Heartland Sundance that was stored covered outside for the first 7 years of it's life. It has a membrane roof with all the standard roof vents, AC unit, etc. I've read the way to clean it is use basic Dawn dish soap and water with a gentle scrub. But what else should I be looking for to maintain the roof so it does not deteriorate? Has anybody ever removed and replaced all the silicone around the vents, or is that just a lay new over the old type maintenance thing? Is there anything else that needs to be done to condition or protect the roof membrane/material? Thank you in advance for the advice.