How to prepare a rusted galvanized metal roof for painting step 1.
Galvanized roof rust.
Wash the galvanized metal using a pressure washer.
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Pour some vinegar on a wire brush then scrub the rusted area thoroughly.
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Wash the area with a garden hose to neutralize the acids in the vinegar.
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Scrape any cracked or peeling paint from the roof before you repaint it or the new paint coating won t adhere properly.
Scrape rust from the roof using a wire.
If your roof is aluminum you shouldn t.
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Apply vinegar to the rust.
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How to repair galvanized metal rust step 1.
1918 section galvanized 6 sided high gauge thickness steel shingles which never leaked and in great condition except for surface rust.
Wait a full 24 hours for the roof to dry.
Access the rusted galvanized metal roof using an extension ladder.
If any panel is extensively damaged replace it with a.
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Rust usually won t eat holes in an aluminum roof but it can discolor the metal.
Examine the area for stubborn rust.