I bought an older house (built 1965) in September 2018 and shortly after moving in (mid October), I was experiencing extreme joint pains. Strangely, I was feeling pain and discomfort only inside my house, everywhere else I was perfectly fine. One year later, the moldy batt insulation in the basement has been removed and replaced with spray foam insulation; the foundation around my house on the outside surface has been waterproofed (4 cracks were found inside the basement walls) and the grading reversed. I’ve had many contractors come to my house and most of their suggestions have been implemented. Unfortunately, $40k later, the humidity inside my home is still high 50-65% .
Furthermore, a contractor recommended installing an air purifying system, adding additional insulation in the attic and refinishing the walls in the basement to reduce humidity and coldness in my home. Frankly, I am not sure whom to trust anymore, therefore, your guidance would be greatly appreciated.