I assume this is for protecting doors, but what I don’t understand is this: most door panel interiors are painted, this protected from rock chips. Why is it they rust from inside out? Can’t I just spray the outsides of the door to protect them? Why does rust protection need to occur inside the panel?
Is drilling holes necessary for rust proofing?
- Thread starter Kurtatron
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The pinch seem at the bottom of the door is made before the door is painted so they start rusting there. Most of the ones I have seen have seem sealer on them but that only slows down the water and dirt.
Best thing you can do is remove the door panels and spray fluid film in the door bottoms.
Best thing you can do is remove the door panels and spray fluid film in the door bottoms.
The interior and exterior door skins come together at the bottom and usually the outer skin is crimped over the interior door frame. Then they stick seam sealer inside the door where the two come together and stick some drain holes. Often the sealer isnt applied perfectly and or the drain holes become plugged and water can sit. Especially salt water if your exterior windows get salty in the winter and that salt water runs down into your doors and sits.
We just had both of our new '21 vehicles Krowned. They drilled a handful of holes and then popped some greased caps in the holes when done. I had no issues with them doing so....beats the alternative of having rust down the road.
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