Originally Posted by
Zero102
If anybody is curious how my mitigation is going, a month ago we cut open the bottom of the basement walls and sealed the slab to the foundation walls, that seems to have brought the average down from ~100-120 to 30. We plan on doing this around the full perimeter of the basement but it takes time to do that scale of work (for each room you have to empty the room, cut open the wall, seal bottom, replace drywall, tape/mud, sand sand sand then paint, and during that time another room or two is a disaster because of all of the extra stuff in it) so it'll probably happen over the next 1-2 years now that it's no longer an urgent matter.