The short answer is, yes the IKO enertherm ALU Insulation Board is suitable.
Installation of the insulation boards should be over the rafters when possible. Fill all joints with PU foam. Once dry ALU tape can be used to cover the joints to create a damp proof barrier. If you are looking to use the cellar as a living space, you will need to cover it with an fire safe plasterboard.
Please consult a member of the IKO Technical Department before installing:
01257 256 864