Ford Mondeo II (1996 - 2000) - Welded patch on sill, what best to undercoat with?

Honest John Back Room » Technical matters
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Thu 14 May 2009 15:26
Welded patch on sill, what best to undercoat with? - softopdriver
I need to have a small patch welded onto one sill, just ahead of the rear wheel and on the lower surface of the sill, so it will be facing the road surface. I know the welder will immediately smother the area with some sort of undercoat, but having not had to have any welding on a car for over 10 years now, what is the best procedure today for protecting this repair, and in fact to be able to paint it to match the body colour?

Do I need to remove the stuff he applies and use something of my own, or do I simply spray over whatever he applies? I'm a bit lost here, any help is greatly appreciated.


Moved from Discussion - and yes jbif the OP knows as do the other mods.

Edited by Pugugly on 14/05/2009 at 17:55

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Thu 14 May 2009 21:05
Welded patch on sill, what best to undercoat with? - Hamsafar
Use something like POR15 and then go over the top with a flexible sealer such as underseal or dumdum. It may be almost impossible to paint the back of the repair, depending on how it's designed, you may be able to remove a plug and spray a protectant such as Dinitrol Corromax in there.

Edited by Hamsafar on 14/05/2009 at 21:07

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