THERE'S A SYSTEM TO THESE THINGS.

roof ventilation system, comprised of ridge vents, end plugs, connectors and connector straps

glass fiber insulation for building and construction; foam insulation for building and construction; polyurethane foam sealant for use in buildings; flexible sheet of polypropylene and non-woven scrim fabric for use as insulation in residential and light commercial construction industries

building materials, namely, glass fiber reinforced mat in the nature of a self-adhesive waterproof shingle underlayment