A friend of mine tells me that the new closed cell spray foam is a very good insulating product. Should I pay a little extra for this type of insulation or just put in conventional insulation?

Spray foam is unmatched in its insulating qualities. The closed cell foam is best as it has trapped inert gases in it that resist most types of energy movement including radiant, convection and conduction. This means it saves a lot of heat energy. The greatest...