I have used coal tar epoxy, not expensive,easy to apply, and proven as a coating to resist corrosion. I think for battery boxes etc. it would be hard to beat!

Hi Don:
Can this be sanded and painted or is the usage inside (only) such as a battery compartment.

Where do you purchase such and does it come pre-mixed.

Al

[This message has been edited by Al Benton (edited October 29, 2003).]

When I read "TAR" I think "STICKY"???? Thanks. Dale

How about sprayed or painted on truck bed liner like rhino lining or something similar?

I used spray on truck bed liner on my battery box. It gives a tough durable coating for about $6 a can.

I purchased the coal tar epoxy at a distributor for fiberglass & resins in Sarasota. It dries hard, but I beleive it remains somewhat flexable. I painted an aluminum fuel tank in my boat that had leaked from electrolosis. I gave three coats when the coat previous was slightly tacky I applied another coat. It is a 2 part mix, and is easy to work with. plenty of working time.

Did you wire brush the rust off of battery box & then apply epoxy or did you use a spray on rust inhibitor that turns to a primer that you can then paint or epoxy?
Tere

Don probably posting here anymore - his wife took of with the new motorhome.

It's always best to clean off as much of the rust as possible, then treat with a phosphate-based primer (names like Ospho or Phos-go - it's a watery green liquid), which chemically reacts with the remaining rust. I coat with 2 or 3 coats of cold galvanizing spray, then overcoat.