@Bav So after
@Tourershine sorted my roof I tried to maintain it with regular polishing but was fighting a loosing battle. No body shop would paint the roof on the van so went for the wrap.
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As you can see the overall effect is great but
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In detail you can see a bit of lifting along the corner which happened during the hot weather in summer. The black roof gets very hot.
This would be a great worry to some with OCD but my view is that it is so much better than before.
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Generally the wrap is good. Sorry its not clean but you get the idea.