You may find it necessary to sand a bit by hand without a sand block.
How to sand and paint a metal roof.
Apply a coat of paint to the entire roof.
This way you won t sand too much into the metal and weaken it.
If crawling around on a metal roof in the hot sun does.
Use a brush roller or spray can depending on your preference or the size and shape of the metal object.
After fixing an 80 grit sheet to your paint remover sander you ll want to move up and down the surface of the metal.
Learning how to paint metal roofs what to buy and what to avoid can t be completely explained in one article but you can get a good idea as to what the best ways are to approach a project of this skill level and expertise.
Sand the entire metal roof surface very lightly with your wire brush or.
Apply a generous amount of paint across the entire roof.
Metal roofs need special paints and special care.
When the paint is almost gone switch to a sheet of 200 grit to gently coax the remaining paint off the metal s surface.
Remove all rust using your wire brush or sandpaper.
Wash the brush or roller you used for the primer or get a new one.
Attach an 80 grit sanding disk to your sander and begin sanding the metal surface from which you need to remove paint.
How do i repaint a metal roof on an old house.
The first thing you ll need to do is wash your shed with warm soapy water.
Apply the sherwin williams paint and primer to a galvanized roof with a paintbrush or a roller specifically designed for corrugated metal.
Because 80 grit is pretty coarse stop using it when the paint is almost all the way off.
Again work from your ladder as much as possible.
The paint should adhere to the prepainted metal surface.
Step 7 remove the painter s tape after the final coat is fully dry.
A wire brush or sandpaper may help loosen tough areas.
Step 6 wait for the first coat to dry and then paint additional coats if necessary.