Before applying a new coat of paint you.
How to spray paint corrugated iron roof.
If crawling around on a metal roof in the hot sun does not.
If your roof is unpainted prime it with a metal primer.
Start from a predetermined area and spray about a meter wide portion and work your way down the sheet.
By using a paint sprayer you can make sure that you cover all areas with a nice even finish.
Step 3 use a power washer.
How to paint corrugated metal roofing.
If your roof is painted but has bare patches from rust removal apply a primer to those areas too.
Apply the sherwin williams paint and primer to a galvanized roof with a paintbrush or a roller specifically designed for corrugated metal.
Using an airless spray gun is the fastest and most convenient way to paint a corrugated iron roof.
The most cost effective method of applying the noxyde coating is with an approved airless spray unit.
Step 5 apply the primer.
Rinse the metal again once you ve cleaned it all.
Step 4 purchase a primer.
Step 2 maintain the roof.
Wash the corrugated metal with the soap solution wetting the rag as often as needed.
The first trick to corrugated metal roof is to not paint a dirty metal roof.
If you have these kinds of surfaces it s likely there are gaps nooks and crannies that are hard to reach with an ordinary paint brush.
You can use the joints on the sheets as your guide.
Step 1 clean the roof.
Spray down the corrugated metal with water from a hose.
Mix 1 tablespoon dish soap and 1 gallon of water in a bucket to create a soap solution.
The coating will be applied in two coats to achieve a minimum dry film thickness of 350 microns forming a thick polymer rubber membrane that will allow for 200 elongation and will handle any thermal expansion when the roof heats up in the sun.
Now that your roof is cleaned and primed you can start painting.