We would let you back if you ever want to come north Agian.....I can see wisdom in letting it cure (dry out) for a few weeks.
But I would think that if not sealed blocks are porous. If they get wet, then freeze, they might crack and be damaged. Just my 2cents. I left the cold north as soon I got out of school. So my building experience in the north is out dated by 37 yr.
