Back of pv plastic coating coming off

[Guda]

I have some used PV & the plastic is coming off the back of one. Its like a window tint film almost but white. Is there going to be a issue with that panel? The sun actually hits the back of that array as it sets.

 

[svetz]

I have some used PV & the plastic is coming off the back of one. Its like a window tint film almost but white. It's the "back sheet". They're white to reflect a bit more power back into the panel (Bi-facial panels don't have back-sheets). Is there going to be a issue with that panel? In addition to a slight loss of power, the panel may decrease in output and fail at some point as the film helps protect the "encapsulant" which "seals" the panel which protects the delicate bits from corrosion. Bifacial panels get around this as they are "double-glass", that is they are completely sealed with glass on both sides, making them some of the most resistant (and heavy) panels out there.

 

[Guda]

I'll swap it out & see if I cant coat it with something. THANK YOU!!!