Some people suggest allowing the galvanised metal to weather outdoors for a
"You must first apply an etching (or bonding primer). This can be either a
Zinc Phosphate primer or a Calcium Plumbate (not suitable for spray because
of lead content) primer. If it is difficult to find these an Acrylic or
Latex Metal primer should be sufficient for most jobs. "
Also see what Hammerite Special Metals Primer says on the lable.
Naw, Rustoleum has not been a quality product for years. Not since the
reformulated for the mass market.
Better choice is either Rust-Bullet (very good) or POR-15 top coat.
Both are going to cure rock hard, and be indestructable once cured.
Neither is as easy to use or work with as Rustoleum but they will last
much longer and provide much better protection.
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