How is spray foam applied and the benefits

Spray Foam is the only way that a home can have the heating and cooling reduced by 40%. Spray foam when applied is at least 2-3 inches think of Spray polyurethane foam (SPF). This is a barrier that will insulate a home better then the Pink rolled insulation which breaks down after years. Spray foam not only helps with insulation but will be a barrier against drafts and allergens.