Many metal roofs are made out of galvanized metal which is a type of metal that has been covered with hot zinc in order to protect it from the weather.
Painting new galvanized steel roofing.
The vinegar is a mild acid which acts to etch the galvanized coating so the paint will stick.
Galvanized steel on the other hand cannot be painted with an oil based or aluminum based paint.
Prime the surface with a primer made for metal.
Painting metal roofing provides you with a number of steps and decisions throughout the process.
Clean the steel with a chemical degreaser.
You can also use oil based alkyd paint but.
Be sure to cover the entire surface so that you cannot see any primer left.
To ensure that you know what kind of metal your roof is made out of and what kind of paint you should use ask a professional roofer to inspect your home.
If you have a kitchen then you probably already have this handy solution.
Use your putty knife or scraper to scrape off any peeling paint or accumulated rust on your metal roof.
Although you can leave the steel panels unpainted many people choose to paint them a color that complements the remaining exterior of the structure.
Galvanized metal requires either a zinc dust type paint or a latex paint.
Painting a galvanized steel panel roof is not.
Here s how to make sure you make the right calls while addin.
Apply two topcoats of paint on top of the primer.
Wipe the galvanized surface down with white vinegar.
A powerful degreaser will cut through dirt grime mold and other problematic residue without affecting the temperamental zinc coating.
Using your exterior metal acrylic based paint using the same paint tray that has been emptied of any remaining primer begin to apply the paint with a roller directly onto the galvanized steel roof panels in the same order you applied the primer.
Proceed in small sections until you ve cleaned the entire surface.
However paint on metal roofs often peels or rusts in which case it is time to repaint it.
Spray the surface with the solution then scrub it with a clean lint free cloth.
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.
All you have to do is simply apply the vinegar to a clean rag and then wipe down the galvanized surface.
The secret to painting galvanized steel is white vinegar.
Galvanized metal roofs are usually painted with acrylic based paint.