hi john,i have a2002 reg ducato van which is in not bad nick except for rust on drivers side sills, as i was sanding the sills a part came away in my hands,my question is.would i be able to repair this with fibre glass and would it pass an mot?
Yes, you could but no it won't
welding required
Yes, you could but no it won't welding required
Surely it depends on the distance the corrosion is from any steering, suspension or seatbelt mounting points and whether it's structural.