Skirting is on the RV, and I think we're ready for winter now! We've used 2" XPS foam board like this for the past few years and it's always worked well.
Each year we've been able to use up the foam board in building projects, so nothing goes to waste. But next year we might leave this on and just add some ventilation as it should help keep mice out of the RV - it's sealed up _really_ tight right now!

