How much does it cost to insulate with spray foam?

For an insulation that is adequate and meets current standard, you should set aside at least 3% of your construction budget. Seems like a lot? Remember that in the medium term – i.e. less than 5 years – you will recover every dollar you invest in the insulation of your home. It is not uncommon to see energy savings that exceed 25%. Also, these are recurring savings from year to year