Several manufacturers used a siding material that did what you describe. It's not delamination, it's actually the surface of the wall material breaking off. Only permanent fix is to remove the siding and replace. Not cheap unless they will cover it under warranty.
On our 41' MH it's about $30,000
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2009 45' Magna 630 w/Cummins ISX 650 HP/1950 Lbs Ft, HWH Active Air
Charter Good Sam Lifetime Member, FMCA,
RV'ing since 1957, NRA Benefactor Life, towing '21 Jeep JLU Rubicon Ecodiesel
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