Transparent poly roof woes

[pewe]

My wifes 2009 451 has a transparent glass (polycarbonate) roof.

It suffers the common problem of the poly crazing due to UV exposure, but now it has developed a different problem.

The surface has developed what appears to be a coating failing (similar to what a lacquer varnish would do when it ages).

Has anyone ever had a similar problem, and more importantly, does anyone know if a good sanding and recoating would cure the problem - if so what 'lacquer' should be used.

Any input would be appreciated.

[2fortwofamily]

Have you ever used a spray on & buff anti u.v. treatment (such as for the rear quarter windows)?

See here: https://www.evilution.co.uk/index.ph...=info&mod=1227

Use the search engine to check out the 450 protection strip which might give you an idea on a top sheet fitment for the 451 woes as to build up a layer of protection.

(my daughters 450 brabus has the rear quarter windows wrapped solving that problem)