The kind of warranty you can avail will depend of the shop that you choose. Make sure you know what warranties they offer before committing to any repair. Generally, most reputable auto body shops will give their customers a warranty covering all workmanship and the materials they use for a specified period of time.
Yes, rust or corrosion build-up can be a concern when you repair your vehicle, especially when you have had bodywork completed. Depending on the severity of the damage and the materials employed in the repair process It is likely that additional measures will need to be taken to safeguard against corrosion or corrosion build-up later on. Having your car serviced regularly can help prevent this from happening.