Apply phenolic epoxy layer properly under the insulation and it will provide also a long term primer protection.
Leaving metallic surfaces bare under non adhesive insulation is looking for corrosion troubles (but some people like it because this is obsolescence and this is their business model).

* Finding a solution is great * Knowing how to implement it is fantastic * Believing it is the only one and best is naive ?

Ask the salesmen to back up their statements by putting an ISO 19277 qualification dossier, independently verified, on the table for you.

Steve Jones
Corrosion Management Consultant

www.linkedin.com/in/drstevejones

All answers are personal opinions only and are in no way connected with any employer.

What's the "best option" means, in terms of material quality, less labor or time to work with, or cost benefit, etc.?
Have the vendor to provide the actual product application and references.

jay-pv...

Thankfully You defined CUI in relationship to this issue...

Word to all: be wise and always define abbreviations, when used.

For instance… CUI can also mean [DoD] Controlled Unclassified Information

Regards, Wil Taylor
o Trust - But Verify!
o We believe to be true what we prefer to be true. [Unknown]
o For those who believe, no proof is required; for those who cannot believe, no proof is possible. [variation,Stuart Chase]
o Unfortunately, in science what You 'believe' is irrelevant. ["Orion", Homebuiltairplanes.com forum]