RV de-winterization on the Outer Banks

Spring recommissioning gets treated as the reverse of winterizing, and that framing is what causes trouble. Undoing the antifreeze takes an hour. Finding out what went wrong while the rig sat for four months is the actual job, and it is best done in a driveway in March rather than at a campground in May with a family waiting.

Water first, and sanitising is not optional. Flush the antifreeze out of every line until it runs clear, then sanitise the fresh system with a measured bleach solution, circulate it to every tap, leave it for the dwell time the system needs, and flush it thoroughly again. A tank that sat all winter is not sterile no matter how clean it looked going in, and the taste of a badly flushed system will follow you for a fortnight.

Then pressure-test before you trust it. Fill the system, run the pump until it cuts out, and then watch it — a pump that cycles on its own with every tap closed is telling you there is a leak somewhere, and it is far better to hear that in the driveway. Walk the bays and the under-floor with a torch looking for damp. A split fitting that froze in January reveals itself in the first ten minutes of pressure and not before.

Gas next, and this is the part to be conservative about. Open the cylinder slowly, check that appliances light and hold, and if there is any smell of propane at all, shut it down and get it tested properly. We do not publish cylinder requalification intervals or code citations here because we could not verify them against a primary source, and a number recalled from memory is not good enough on a gas system. If the rig has ASME tanks or cylinders of uncertain age, have them looked at by someone who does this for a living.

The running gear is the half of recommissioning that owners skip and that matters most on a barrier island with one road. Tyres lose pressure over a winter and develop flat spots; check pressures cold against the placard, look properly at sidewalls and date codes, and remember that RV tyres age out long before they wear out. Check the brakes and bearings on a towable, particularly if it spent the winter anywhere near salt spray. Batteries want a full charge and a look at terminals that have been corroding quietly since November.

Then the walk-round that catches winter's own damage. Roof seams and sealant, because a winter of sun and wind ages them whether the rig moved or not. Slide seals, which get stiff and take a set after months in one position — run the rooms fully in and out before the first trip rather than discovering a bind on arrival. The awning, unrolled fully and inspected for mildew where it sat damp. And every exterior vent, because something has probably tried to live in one.

Timing it to the season here is easy, because the seashore tells you when spring starts. Cape Point and Frisco open in spring while Oregon Inlet and Ocracoke run year round, and $28 / $35 hookup is $28 for a basic site and $35 with utilities — a wired site for the first weekend back is a cheap way to shake the rig down with a safety net. Have the recommissioning done before that trip, not during it. Across four NPS campgrounds, all take RVs the early-season weeks are the quietest of the year, which makes them the best possible time to find out what the winter broke on a rig of any length up to the lawful 45 feet.

Sanitise, pressure-test, check the gas properly, and go over the running gear before the first trip rather than on it. April in a driveway is a much better place to find a problem than May on NC-12.