Ask I-CAR
Request
What does I-CAR say about corrosion protection after paintless dent repair (PDR)?
Response
Per I-CAR curriculum: "PDR may cause an issue with the backside even if the front side does not require refinishing. During this process, it is possible that the E-coat or wax-based coating on the backside of the panel was removed from the repeated scratching of the dent tool tips, even though the tips may be protected with plastic. Therefore, corrosion protection must be restored to ensure the durability of the repair. This is recommended for most PDR repairs, as it is difficult to see if the corrosion protection was removed. It is better to assume that the finish has been scratched and apply corrosion protection to the panel backside."
Check out the I-CAR Collision Repair News article: Corrosion Protection Guidelines
Check out the I-CAR Collision Repair News article: Don't Forget the Corrosion Protection
Check out the I-CAR Collision Repair News article: When to Apply Corrosion Protection During the Repair Process