Here is a good website to reference for foam insulation:
http://energy.gov/energysaver/types-insulation
Types of Liquid Foam Insulation
Today, most foam materials use foaming agents that don't use ... read more
I would also check two things. Make sure all of the downspouts are running far enough away from the house. The ground is always moving. There could have been some settling that is now draining water b ... read more