My metal roofing is fading after over 20 years. Can I paint the metal roof without using the undercoating?
Md Ariful Islam
বিএসসি(সিএসই)
,
এমবিএ(মার্কেটিং)
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Dr. Md Rushad Rahman
এমবিবিএস(আরপিএমসি)
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পিজিটি(মেডিসিন)
It is unlikely that paint without undercoating will bond well to old metal. I recommend power-washing, sandblasting, then undercoating or priming before attempting to re-paint in order to prevent peeling and separation of the new paint layer when it is dry.
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