Insulating and confused
We are building a home about 20 miles north of Manhattan. We have varying opinions on what should be done with the insulation and the actual installation we stopped while they were installing yesterday. Code is R38/R19. We settled on R38/R21 on top of 1/2-1" spray foam to seal the house. We were never told there would be problems with possible moisture, but 2 days ago, the guy that recently came to work for the insulation company (that tried not to honor the quote and was rude and arrogant)told us that we should do all foam if we do one on top of the other,and that there would be moisture problems .HE said they could spray the walls but not the ceilings or attic. Our ceilings are cathedral and high, or 9'. What do we need there, and in the basement ceiling? What is the truth? We have a contraflow masonry heater fireplace also. Please , what do we need to do for good, reasonable efficiency and air sealing? Do we need a ERV, would that help? This has never even been mentioned. How much are those? What about a blower door test? Where do you get those and how much do they cost? Thanks for all your help, I'm frazzled!