husband bought used rv, for son, , 1991 coleman fourwinds, , question, after I use dicor self leveling sealer, on a few areas, and around antenna cable, and eternabond, on a couple of areas, to 1st seal, any possible leaks, I want to use henry solarflex, and extension pole, roller to coat, entire roof, at least 2 coatings., question is this,husband will hold , extension ladder while I work, roller, however, , I know I need to use paint brush to get around all , vents and air cond. unit, ect., I only weigh about 137lbs. or so, but I was hoping to not get on the roof, , , its probably ok., but prefer not to, if possible, , any ideas?, , I want to caot it good, and hopefully this henrys lasts for at least 3 years, or more, , can I get it done without getting on the roof?,, we will move ladder where ever roller couldn't get to because of , unit ect, in the way, must I get on roof?, we don't have a spray painter, anyway, id have to roll and paint it on.