People assume that if they use waterproof paint it will be better for their roof but instead of protecting your shingles it creates a barrier that traps moisture in leaving your home at the risk of molding.
Can you paint over a metal roof.
Prepainted metallic surfaces can be treated almost like any other basic latex or oil painted surface.
Due to its slick smooth surface metal can be challenging to paint and that can you ve got sitting around in the garage probably won t cut it.
Metal surfaces require specialized primer and paint for good paint adhesion.
Try to achieve a slightly abraded texturized finish as this helps your new paint bond with the roof finish.
Not using a sealant.
Although it isn t recommended to use a metal implement to scrape the roof it was the only way to remove the loose rust and old paint.
To prep metal for paint adhesion you must.
Whether your roof has been painted previously or not powerwash just before you start painting.
If you want to paint a new metal roof though you can prepare it by washing with a weak acid such as diluted vinegar to remove oils and residue first.
Painting a roof can be a difficult job that takes a long time so you should consider hiring professional painters to do the work.
However if you want to paint over prepainted metal you re in luck.
If the paint on your metal roof is starting to crack and peel or if you re tired of its color it might be time to paint your roof.
This is why when you are considering painting your metal roofing it makes sense to go for specific paints for the metal roof.
Be extremely careful not to pierce the metal when scraping.
Sand the entire metal roof surface very lightly with your wire brush or sandpaper.
If you have a terne metal roof like this one then it has probably been repainted several times over the years.
You cannot set up roof jacks on a metal roof as you can on a shingled one so if you plan to paint with a brush or roller include a safe way to reach the ridge in your plans.
Another mistake is to forget or ignore using a sealant before the application of the metal paint.