Painting Old Metal Roof Before And After

Water resistant metal roofing paint for example can be of great value if you live in a rainy area.

Painting old metal roof before and after.

Not using a sealant. Just before painting wash the roof with a power washer at a pressure of 2 500 pounds per square inch whether it is a new or an old one that requires re painting. When that much paint is present it may be time to replace the metal instead of painting it. 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.

Whether your roof has been painted previously or not powerwash just before you start painting. Latex paints are not as bad as oil based paints for this but there will still be some touch ups to do in either case. If so have them replaced and sealed before applying the roofing for the best long term repair. To paint a metal roof you ll need to use an oil based paint if you have a terne metal roof or an acrylic based paint if you have a galvanized metal roof.

Before you dive head long into painting your metal roof you need to determine what type of. However all painted metal roofs have one downside in common and that is that they have to be repainted periodically. Metal roofs of all kinds have many advantages from being long lasting to shedding water and snow quicker than an asphalt shingle roof. It could even have multiple coats present.

Painting metal roofing provides you with a number of steps and decisions throughout the process. The great majority of the time the roof will have a previous coating on it. If you re not sure what kind of roof you have ask a professional roofer to inspect it before you paint it. Try to achieve a slightly abraded texturized finish as this helps your new paint bond with the roof finish.

Another mistake is to forget or ignore using a sealant before the application of the metal paint. This is why when you are considering painting your metal roofing it makes sense to go for specific paints for the metal roof. Some old roofs have been found to have 30 40 layers of paint on them. Here s how to make sure you make the right calls while addin.

You ll also need to purchase a primer designed for metal roofs. Paint work that is a month old is stuck much better than paint that is only a few days old. Sand the entire metal roof surface very lightly with your wire brush or sandpaper.