Prepare Corrugated Iron Roof Painting

The first trick to corrugated metal roof is to not paint a dirty metal roof.

Prepare corrugated iron roof painting.

If the project cannot wait wash off oils and other remnants of the galvanizing process with a. Wait three hours for the metal to dry. Before applying a new coat of paint you need to get rid of any oil debris and dirt buildup that already exists. If your roof is unpainted prime it with a metal primer.

Wait four hours for the primer to dry. Roll in a vertical motion working backward toward the extension ladder. Pour an exterior grade rust inhibiting primer into a paint tray and apply it to each roof panel. Use a long handled paint roller and apply primer until no portion of the metal is visible.

Then plan on washing the roof with a power washer so it s clean when you apply the paint. Use a power washer or brush with a mild cleaner to remove grime and debris. How to paint a corrugated iron roof if you are painting a new iron roof you will need to wash it with a degreaser before you start unless the roof is more then a year old and has weathered. Begin at the far side of the roof.

Step 1 clean the roof. You ll need to prepare the roof by scraping away loose paint and rust with a paint scraper or putty knife. If your roof is painted but has bare patches from rust removal apply a primer to those areas too. Step 2 maintain the roof.

You ll get the best results if you use brushes or rollers designed for a metal roof. Now that your roof is cleaned and primed you can start painting. This means that the oil from fabrication has worn away and the iron has been slightly etched through weathering. 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.

Galvanized steel on the other hand cannot be painted with an oil based or aluminum based paint. Galvanized metal requires either a zinc dust type paint or a latex paint.