Reduce the Roof or the Palisade by 1.
Requirements: 1 Action pawn and 1 wood.
Resolution: Discard this card and increase the Roof or the Palisade by 1 (if you have a Shelter).
Lose half the Roof or Palisade (rounding in your favour, so you lose 0 if the chosen track is already at 1). If the chosen track is already at 0, so it can't be reduced, unfulfilled demand applies: all characters take 1 Wound.