Vinly siding insulation Question

2 questions:

  1. how does the insulation in your attic or between studs on the inside of a house differ from the insulation we put up on the outside of a house as preparation for vinyl siding?
    2)does the outside isulation for the vinyl siding have an “R Value”?
    thank you

The types of insulation that go into attics varies widely…
The insulation you nail to the exterior of a home to smooth out the surface for the new siding is usually rigid polyurethane foam, it is available in various thicknesses and has different R values depending upon thickness and density.

your attic insulation is either fiberglass or blown in cellulose.
siding insulation is a completely different product, that is installed with nails.