Davej wrote:

Does this fabric need a protective inner liner?

That depends. If it's three layer, no. If two layer, yes. The third
layer protects the PTFE liner. If the inside of the GoreTex is grey in
colour and has a tricot layer, it's three layer. Some of the light
GoreTex versions have small spots on the inside for a third layer. If
it's plain white, it's two layer.

You can protect the two layer version with an open athletic mesh.
Whatever you use, make sure it's 100% polyester - nylon would be a
poorer second choice.

Mike