A bit if a follow-up.

Spoke to another contractor who uses Demilac products.

http://www.sealection500.com/dem/s500/index.php

Anyone use this or heard of this product?

One plan is to remove the old fiberglass batts, spray about one inch of closed-cell foam for the air barrier, then re-install the batts.

Since the existing batts are kraft faced, would there be an issue with re-installing the old kraft batts on top of the foam? Or should non-kraft batts be used?

If new non-kraft batts are necessary, would blown-in insulation be better on top of the foam?

Thanks!