For the smoothest paint job finish sanding with 400 grit wet dry paper.
How to sand metal roof.
When you have removed much of the unwanted material switch to 200 grit sandpaper to finish off the sanding process.
Take care the first piece is aligned precisely perpendicular square to the edge.
Using the 200 grit sandpaper until you get a smooth finish.
Work up from the initial row starting at the lower corner in a diagonal pattern staggering the shingles to prevent gaps.
How do i repaint a metal roof on an old house.
Scrape away any loose or flaking paint using your putty knife.
Lightly sand the entire surface of the metal with a fine grit sandpaper to shed any protective coating present that might prevent the object from.
Lay the starter row of metal shingles at the drip edge and affix to the roof with metal roofing nails.
Attach an 80 grit sanding disk to your sander and begin sanding the metal surface from which you need to remove paint.
A typical metal roof installation can last anywhere from 30 to 50 years so you will have made an important investment in the value of your home.
This way you won t sand too much into the metal and weaken it.
The best way to sand is along the grain of your metal if any is present else you can always do it in circular motions.
Most metal shingles will be attached to the roof using metal shingle.
Because 80 grit is pretty coarse stop using it when the paint is almost all the way off.
When you remove the unwanted material such as the top layers of paint or any scratches then you move to finer and higher sandpaper such as the 200 grit sandpaper.
Use pieces of either sandpaper to remove pockets of the material that might have been left in the tight spaces.
Once the rust is gone switch to a finer grit to smooth out the swirls and grooves caused by the coarse grit.
Remove all rust using your wire brush or sandpaper.
Cleaning a metal roof.
Sand the entire metal roof surface very lightly with your wire brush or.
Take your first sheet of metal and place it on the roof so that it overhangs the edge at least 3 4 in 1 9 cm.
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Sand the metal with fine grit sandpaper.
A wire brush or sandpaper may help loosen tough areas.
You start with 80 grit sandpaper and sand the metal in circular motions.
Best of all the choices of materials today enable homeowners to choose metal panels that completely match the look and style of their home.
Things you should know.
Use your neoprene washer head screws to secure the metal to the sheathing.