How To Paint Galvanized Tin Roof

Apply the sherwin williams paint and primer to a galvanized roof with a paintbrush or a roller specifically designed for corrugated metal.

How to paint galvanized tin roof.

Once the metal has been cleaned and is dry prime it using an exterior multipurpose latex primer or a latex primer that is made specifically for galvanized metal. Wait until the solution dries then rinse it off the roof with water. Once the primer has dried apply your first coat of paint with a brush or roller. Galvanized steel on the other hand cannot be painted with an oil based or aluminum based paint.

A paint which will stick well like self etching primer is good and it s necessary if you have real rust. Let the primer dry completely which should take anywhere from 2 6 hours so your paint will stick properly. If crawling around on a metal roof in the hot sun does not. You can apply something like ospho affil.

Galvanized metal requires either a zinc dust type paint or a latex paint. Apply the galvanized metal primer to your roof with the paint roller. Apply a coat of paint to the entire roof. Link to product info on amazon first just in the rusted areas if the rusted areas are scattered then paint the whole roof.

Wash the brush or roller you used for the primer or get a new one. On older galvanized metal surfaces where the zinc coating has begun breaking down known as white rust use a wire brush or fine sandpaper to remove the chalky film before cleaning it. Pour an exterior grade rust inhibiting primer into a paint tray and apply it to each roof panel. Use your sponge or paint roller to apply this solution to your metal roof.

My house was built circa 1880 and still has its original terne metal roof which consists of individual metal shingles with an embossed decorative pattern. Apply a generous amount of paint across the entire roof. To paint galvanized steel start by applying a latex based primer evenly across the surface to stop the paint from soaking into it.