Two different types of roofing material , one is white all the way through ( TPO ) , the other ( EPDM ) is black on the back side when installed , and if you're starting to see black the white portion has worn off, if there is actual pealing , then it's possible the roof was re-coated and that coating is pealing.
Somewhere I have a link to a site with pictures of RV roof problems ; I'll track it down and re-post.
EDIT: I got back in time to add to this post.
AND of course I can't get the link to work . I'll be back !
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99DSDP 3884, Freightliner, XC, CAT 3126B, 300 HP /ALLISON 3060
2000 Caravan toad, Remco & Blue Ox.
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