.

R-Value

Air Barrier

Vapor Barrier

Below Grade

Closed Cell Foam

R-6 / in

Yes

Yes

Yes

Open Cell Foam

R-3.7 / in

Yes

No

No

Polyisocyanurate

-

-

-

-

XPS

-

-

-

-

EPS

-

-

-

-

Batt

-

-

-

-