Step 2 prepare the metal.
Painting tin roof forum.
To paint a metal roof you ll need to use an oil based paint if you have a terne metal roof or an acrylic based paint if you have a galvanized metal roof.
If the metal was tin plate or terne plate ok.
You ll also need to purchase a primer designed for metal roofs.
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A good oil base primer made specifically for roofs plus an oil based topcoat.
You can update your roof and prevent further rusting by cleaning it up and giving it a fresh coat of paint.
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Sta kool sk 7705 traditional acrylic elastomeric roof coating 5 gal white 4 6 out of 5 stars 36 rust oleum 7769502 protective enamel paint stops rust 32 ounce flat rusty metal primer.
Make sure to use a putty knife to scrape and scratch away all loose pealing paint.
If you re not sure what kind of roof you have ask a professional roofer to inspect it before you paint it.
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Roof painting is tricky.
However if the old roof already has a coat of paint on it you ll need to prepare the surface for the fresh coat of paint.
Atmospheric dirt will help mute the difference as well.
Galvanized metal requires either a zinc dust type paint or a latex paint.
Apply the sherwin williams paint and primer to a galvanized roof with a paintbrush or a roller specifically designed for corrugated metal.
Make sure the roof is bone dry before starting.
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Its likely the color variance will tone down over time.
Metal can be painted and coated over and the darker the color the more of the suns radiant energy it will absorb i e.
Metal roofs are prone to rust because they are constantly exposed to the elements.
If crawling around on a metal roof in the hot sun does.
My house was built circa 1880 and still has its original terne metal roof which consists of individual metal shingles with an embossed decorative pattern.
Removing dirt oil and debris is just one part of a two part process to prepare a tin roof for painting.
If you re planning to paint a brand new raw tin roof you don t need to do much preparation work.
If you paint the roof you should paint both sections.
One issue that tin roofs have especially older ones is that they can get worn out and rusty rather quickly.
If the metal was galvanized can be more difficult.