To maintain the roof s integrity and condition you must protect the metal with a layer of paint.
Can you paint a steel roof.
If you want to paint a new metal roof though you can prepare it by washing with a weak acid such as diluted vinegar to remove oils and residue first.
Water resistant metal roofing paint for example can be of great value if you live in a rainy area.
Not using a sealant.
Can you paint metal roof a corrugated metal roof is an excellent hard wearing choice for many diy projects such as building outhouses and sheds.
You cannot set up roof jacks on a metal roof as you can on a shingled one so if you plan to paint with a brush or roller include a safe way to reach the ridge in your plans.
This roofing material has a typical lifespan of 20 100 years if taken care of properly.
To help the primer and paint adhere to the roof better try lightly scuffing the surface of the metal.
Don t worry about patches where the paint is in good shape as you can simply paint over those.
Whether your roof has been painted previously or not powerwash just before you start painting.
For instance if you re painting a smaller roof you might use 80 120 grit sandpaper or a wire brush.