How To Clean A Metal Roof For Painting

Over the course of time painted metal roofs will appear discolored in areas where dirt and grime accumulate.

How to clean a metal roof for painting. 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. Before you can clean your metal roof you ll need to do a thorough inspection of the roof itself. Overuse or abuse such as over concentrating a cleaning solution mixing with other chemicals or using too much of a solution for too long could lead to damage of the metal or paint system which will also likely void one or more of your warranties and leave you with the cost of paying for a metal roof replacement. Galvanized metal roofs are coated with a layer of zinc that inhibits rust.

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. To clean a metal roof wait for a dry overcast day and make sure you have a partner to help you for safety reasons. Keeping your bryan roof clean is a part of normal roofing maintenance. Keep in mind that metal roofs tend to be much more slippery than an asphalt roof and that many aluminum roofs will also dent easily if walked on.

You ll also need to purchase a primer designed for metal roofs. Unfortunately over time this coating can fail leading to minor rust outbreaks. If crawling around on a metal roof in the hot sun does. When you re ready to get started spray your roof using a garden hose with a spray nozzle attachment starting at the top of the roof and blasting downward so the dirty water runs off the sides.

Here s how to make sure you make the right calls while addin. Apply the sherwin williams paint and primer to a galvanized roof with a paintbrush or a roller specifically designed for corrugated metal. Therefore it s usually best to clean a metal roof from on top of the house itself.