I am renovating one of my rooms. I have taken off the skirting board. Now I see that between floorboard and wall there is 1-2cm gap from which I can feel strong airflow. That airflow is I am guessing I from the wall ventilation outside the house.
My question is: Would be wise to fill these gaps with extending foam? From one point I assume that airflow is good there. But if the air humidity is high it could have a bad effect on the skirting board and plaster in the long-distance period. Photo attached