How to Repair Rusted Box Gutters
A box gutter is a rain gutter that has a wood framework lined with bent sheet metal. The sheet metal creates the trough the rainwater flows down. Two metals traditionally used to line box gutters are tin-coated steel and copper. Copper is essentially maintenance free after it's installed. Tin coated steel however requires repainting every 8 to 10 years. If a box gutter has rusted, chances are it's lined with tin-coated steel that hasn't been properly maintained. Here's how to restore a rusted tin-coated steel box gutter liner. Does this Spark an idea?
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Instructions
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Set up a ladder and climb up to the gutter. Brush away any peeling paint. Wipe off grease and dirt from the painted surface of the metal.
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Paint on a self-etching metal primer that doesn't require scraping the old paint back to bare metal. One that can be painted directly over the rust and stabilizes it.
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Within 24 hours of painting on the metal primer, apply a topcoat of paint. Use an exterior latex paint if the gutters receive low to medium sunlight. Apply an exterior epoxy base paint if the gutters receive high levels of sunlight.
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Tips & Warnings
If your gutters are high up work with a partner in case of an accident.
