While there I noticed the family has moved into the long vault. I wanted to see about dampness especially but talked to her about 15 minutes about the house, efflorescence, ventilation, and the like. She said she was very happy with the house. I was surprised that they were no longer seeing any dampness on the inside. she asked about the white efflorescence . I told her it would just fall off and not touch or wash it.
She says that about 8 pm the house warms up for a coupe of hours. that is the heat stored during the day. They keep windows open until about 9pm. I told her to put plants up on the roof to shade it. We talked about having planters and growing spinach and the like. I must say that short visit paid much back of the unpaid time I have spent on this.
A short video showing how to glue a brick in the vault.