There s two ways you can go about with foam board insulation.
How to install rigid foam insulation on exterior concrete walls.
The correct method of using rigid foam is to run continuous 4 foot by 8 foot sheets of the foam across the concrete basement wall making the rigid foam the de facto wall.
Installing rigid foam insulation.
How to insulate house walls from the outside.
There is almost.
After that thin furring strips are installed on top of the foam to provide a firm base for the drywall screws and drywall but can you run rigid foam between the studs just as you would do with fiberglass rolls or spray foam.
The contractor applies a layer of adhesive over the surface of the concrete blocks and then installs a vapor barrier and high density rigid foam board insulation on top of that.
How to glue polystyrene insulation to a concrete wall.
Polystyrene foam boards commonly called foamboard are a clean lightweight convenient way to insulate bare concrete walls.