Metal pole buildings are excellent choices for spray foam, polyurethane insulation.  The metal shell on the outside of a metal building or pole barn creates a vapor barrier causing moisture to condense on the inside of the building during cold temperature.  Spray foam, forms a bond with the metal building surfaces, providing an effective air seal and prevents water vapor from condensing onto the building shell during cold air temperatures.  Spray foam on a metal pole shed not only provides excellent insulating weather-proofing, it strengthens frame walls by approximately 40%.