I live in Connecticut and recently had a home energy audit and the main issue they found is that my attic is not insulated enough. My attic floor is insulated [not enough] and covered in plywood as we use it for storage. It also contains an air blower for forced hot air [hot water comes from boiler in basement] and AC.

I have contacted three different spray foam contractors and they all recommend spray foaming my rafters and foaming over my soffit and ridge vents creating a conditioned space. Two of the vendors will do close cell foam although I had to specifically request closed cell as their first reco was open cell. The third only does open cell and is strongly recommending open cell. He says you want open cell so the system can breathe and "not" trap moisture.

None of these three contractors recommended a vapor barrier if were to use open cell.

I checking my building codes: http://www.ct.gov/dps/lib/dps/office_of_state_building_inspector_files/2009_amendment_final_unformatted.pdf and found this: "An air-impermeable insulation is applied in direct contact to the underside/interior of the structural roof deck. "Air-impermeable" shall be defined by ASTM E 283-04. "

I also found this article here: http://www.greenbuildingadvisor.com/green-basics/spray-foam-insulation-open-and-closed-cell: "Open-cell foam is relatively vapor-permeable. Three inches of open-cell foam have a permeance of 16 perms. When installed in a cold climate, the interior face of open-cell SPF should be covered with a vapor retarder (for example, vapor-retarding paint"

I'm distressed that I can't find a contractor that will offer me a solution that meets everything I read online. I'm starting to second guess myself, but this is what I think NEEDS to be done as not to prevent a moisture problem:

- CLOSED cell foam against the roof rafters

- Ensure all gable walls are spray foamed

- Spray soffit and ridge vents to create a conditioned space

OR

- OPEN cell foam against the roof rafters

- Ensure all gable walls are spray foamed

- Spray soffit and ridge vents to create a conditioned space

- AND apply some sort of vapor barrier in the interior

Is all my research correct? Can anyone recommend a spray foam contractor in CT that will do this work?