Not using a sealant.
Paint badly peeling etal roof.
The same paint that peels in some spots will stick tenaciously for 40 to 50 years in other spots.
Long term testing has shown that 100 percent acrylic latex lasts longest.
Large cans may be the most cost effective option when painting large linear metal objects such as fences and backsplashes but spray paints e g rust oleum hammered metal finish spray 8 74.
First a word about paint.
If you re up for the challenge.
Another mistake is to forget or ignore using a sealant before the application of the metal paint.
This could be a problem because without a sealant the metal paint might just peel off the metal.
When that happens the paint film starts to sheer from the metal and peeling results.
These flakes of peeling paint will be very brittle and break easily which makes spotting oil based roof coatings fairly easy.
If you can t get peeling chips for some reason there is another way to tell if the roof has oil on it.
In fact i ve been told that thomas jefferson s home monticello still sports its original metal roof.
Here s how to make sure you make the right calls while addin.
Galvanized metal roofs are coated with a layer of zinc that inhibits rust.
If you are preparing to paint a rusted galvanized metal roof pay special attention to surface preparation or you will have a recurrence of rust and or flaking.
Painting a roof can be a difficult job that takes a long time so you should consider hiring professional painters to do the work.
This is why when you are considering painting your metal roofing it makes sense to go for specific paints for the metal roof.
Peeling paint is rarely caused by bad paint.
Metal roofs however pre date the contemporary asphalt shingle roof by a couple of hundred years.
The types of metal roofs that are available today and those that were available during the 1800s and early 1900s have changed dramatically.
Unfortunately over time this coating can fail leading to minor rust outbreaks.