good evening everyone , im looking for a experts answer one this question . heres what I would like to do 
I have a small area in my home under my interior stairs and landing that has no heat to it and use it as a storage area , we find this space cold a it make the tile floor on or landing cold also , the walls under the stairs are well insulated I would like to just lay ridged insulation right over top of the slab is that a good idea or am I asking for moisture ad mold that way , thanks in advance
I have a small area in my home under my interior stairs and landing that has no heat to it and use it as a storage area , we find this space cold a it make the tile floor on or landing cold also , the walls under the stairs are well insulated I would like to just lay ridged insulation right over top of the slab is that a good idea or am I asking for moisture ad mold that way , thanks in advance