rust proofing inner sills

[advtracing]

as the car is getting new sills due to rust , should i rust proof the inside prior to attaching the new panels I.E may be coat the inside with por15 or sim?
has anyone done this or recommend this?

[RSTarga]

won't it burn when you weld? I would think that some wax based rust proofing after installation would be good.

[66S]

Try cold galvanizing or weld-through zinc primer on the inner surfaces.

[Flieger]

Careful of the fumes when welding. The Zinc is toxic when in a gaseous state and can cause a bad headache and other unpleasant symptoms.

[66S]

Let's face it- Restoring cars can be harmful to your health. I've heard cyanide is a byproduct of welding through zinc. Having said this, Ive welded a lot of galvanized steel and have never had a headache from it but it is not a good idea to breathe any welding fumes. Try to ventilate the area well. I think zinc will protect the steel best after welding. Most paints will burn away at lower temps. That cold galvanize is good for exhaust systems too.

[Flieger]

I have the same philosophy with safety. I just meant to take some simple steps to minimize the hazard. Adequate ventilation should do it.

I have done a lot of things that are "hazardous to your health"- like driving fast. Living on the edge is more fun.

[66S]

I couldnt have said it better

[j911brick]

What is cold galvanizing and how is it done. Seems whatever you do will burn off near the weld. I'm facing the same issue and I was thinking about spraying cosmoline inside after the rocker is installed.