There are some acrylic base primers and paint that will work on chalky aluminum.
Painting aluminium roof bars.
The overall process is simple but it can be time consuming because you must wait for each layer primer paint and sealer to dry and cure.
Any paint you use on an aluminum roof needs to be made specifically for aluminum.
The results are worth the effort however.
Buy aluminum roof paint and oil based metal primer from the local hardware store.
Remove any old paint 2.
Polish with low grit to high grit until your standard is met 3 optional.
There is a simple inexpensive method that will allow you to safely work off your roof and access the areas you need to paint.
I work in aviation and when painting aluminum follow these steps.
Apply paint multiple coats and.
Thoroughly clean the aluminum and let dry.
Apply aluminum metal treat to any bare areas.
Choose a paint that s right for your metal roof.
Terne is best painted with an oil based paint.
While painting aluminum increases its aesthetic it also prolongs its life with a hard wearing top coat of paint and sealant that can stand up to harsh weather and soaring temperatures.
Painting this section of your house that has a steep roof is impossible without a way to safely stay on it.
You can create farmhouse style signs or modern designs with paint on ruffled or flat aluminum siding which is much more attractive than plain aluminum.
The paint must be oil based and specific to aluminum roofs.
Some historical homes have terne metal roofs and these need to be painted with oil based paint.
Galvanized metal roofs are usually painted with acrylic based paint.
The wrong kind of paint could produce disastrous results.
Step 2 sweep the whole roof with a broom.
One of my neighbors used an oil based paint as a primer since some of the metal was rusted and then covered the roof with one of the specially formulated roofing paints that is sold by calbar for use on old metal roofs for an added layer of protection.
Once you clean sand and prime aluminum you can paint it just like you would plastic or wood.
Painting aluminium step 1 ensure that the surface you intend to paint is clean and free from dirt grease oil or anything else that could potentially interfere with the paint s application and adherence.
Apply self etching primer let dry then sand again.
Find either oil based or acrylic based paint at your local home improvement store.
The key difference is how you prepare the surface for painting.
