I had friends and contractors look at our basement and they all got it wrong or just couldn't figure anything out. These guys were able to explain everything and gave us detailed recommendations. What a difference their knowledge, training and experience makes.
Cracked foundation and sprinkler system caused a constant leak in the basement home owner didn't notice until he discovered mold on baseboard
A faulty sum pump installation caused a flood water was seeping up from the foundation because the pit didn't have holes to let the water flow
Another water damage. This one from sump pump problems.