If the project cannot wait wash off oils and other remnants of the galvanizing process with a.
Preparing iron roof for painting.
Begin at the far side of the roof.
Here s how to make sure you make the right calls while addin.
Step 1 clean the roof.
Wait three hours for the metal to dry.
Roll in a vertical motion working backward toward the extension ladder.
Apply the metal etching primer to the rusted galvanized metal roof using the roller.
Start by preparing the surface by scuffing it with 80 120 grit sandpaper or wire brushes which will help the paint adhere better.
Roof preparation for a new and unpainted roof allow it to weather for six months before painting it.
Once you get to the bottom stand on your ladder to paint the final section.
Use a power washer or brush with a mild cleaner to remove grime and debris.
I did this by hand scraping the roof twice.
I considered trying to use a pressure washer but there was no good way to access the entire roof with the wand and i was also concerned that i might inadvertently catch the edge of a shingle and end up ripping a couple off by accident.
When you are spraying you should spray about a metre wide section and work your way down the sheet spray in the direction of the flutes in the iron.
What to use and to process to go through so you can have a new metal roof again.
Cleaning priming and painting a metal roof to c.
How to paint a metal roof.
Then after the primer dries go over it with your top coat.
Step 2 maintain the roof.
Airless spraying is the quickest way to paint any roof and if you decide to paint your roof this way there is a technique to applying the paint.
Touch up areas inaccessible to the roller using the 3 or 4 inch nylon paintbrush.
Keep working down your roof toward your ladder.
As with all painting projects the first step was to remove all of the loose paint.
Before applying a new coat of paint you need to get rid of any oil debris and dirt buildup that already exists.
Start painting at the peak of your roof on the left side and work across the top to the right side.
Use a special oxidizing primer on the roof which will help inhibit the growth of rust in the future.