I have some bad welds in my trunk that are cracking and causing it to leak when it rains or I wash my car. I wanted to know if there is any way I could seal these without welding.
I'm not sure what was used to fix these in the first place as the car was used. The last owner failed to disclose that it was in an accident Carfax said it was clean though. Thanks for any help.

You'll have to remove the old sealer and see how bad the welds are and how far they have cracked, you should be able to use a gasket sealer if they aren't bad. You'll be able to find some at an auto parts store. You will want to get the old sealer off and remove any rust and corrosion.

Where exactly are the cracks?