On Tue, 18 Jul 2017 13:01:16 -0700 (PDT), wrote:

I am using Kilz 2 latex primer indoor / outdoor on a house after power washing it if I put a second coat of primer on will that protect the house as an outer coat?

It probably will not provide the kind of UV protection or durability
of a good, acrylic latex, heavily pigmented paint.

Why would you want to use it as the top coat?