It's a regular automotive antenna. The mast is screwed into a base or flange. The flange is fasted to the roof with wood screws. I quickly updated mine as one of my first upgrades when I brought my trailer home the first time. I bought a rubber, black, car antenna with signal boost. I also picked up some self leveling caulk/sealant. After pulling off the old caulk, I found the wood under the rubber membrane was a little water damaged. Being glad I found this sooner than later I planned to use alot of sealant under the flange, on the screw holes and around the joints and mast. It looks cool, but the poor quality concertone did not tune distant stations any better with the signal booster. Pointless in my situation to use the signal boosted antenna. My only recommendation is that you use regular wood screws into the roof deck. If you use something like screws and nuts, the next time you run thru low hanging branches, the decking may get torn up or the antenna will get busted.