Painting Galvalume Siding

The secret to painting galvanized steel is white vinegar.

Painting galvalume siding.

Galvalume metal roof and siding panels are coated with a mixture of zinc and aluminum and siliconized coating to help resist scuffs and fingerprints better than a bare metal product. Most galvanized materials will have a light coat of oil to protect the surface while in transition. Common household products like comet mineral spirits and chlorine bleach can all be used to prepare galvanized steel for painting. Wipe the galvanized surface down with white vinegar.

Usually it s necessary to clean off this coating before applying any paint. Pour an exterior grade rust inhibiting primer into a paint tray and apply it to each roof panel. White vinegar is both effective and non toxic so it is much safer to use than your average industrial solvent. The following paints are suggested for field painting galvalume.

All you have to do is simply apply the vinegar to a clean rag and then wipe down the galvanized surface. Use a long handled paint roller and apply primer until no portion of the metal is visible. Painted metal roofs come with a baked on factory finish and you can re coat these as well as paint bare metal roofing with acrylic latex paint. If you want to paint a galvalume surface consider a crucial point.

Treat the sheet steel with an etching primer or flaking will result. If you re attempting to paint siding panels roof flashing or other materials that have seen exposure to the elements a thorough cleaning is necessary to eliminate any organic contaminants from the outer surface. Go over the metal with a wire brush to remove any oxidation. Galvalume is a type of sheet steel used in a variety of applications including roofing siding furniture gutters and pipe.

To paint galvalume good coating practice should be observed as with painting any surface. All of the listed coatings will give good results. You can also use oil based alkyd paint but. If you have a kitchen then you probably already have this handy solution.

Galvalume will reject paint unless it is properly treated. The mixture of zinc and aluminum protects the galvalume metal against corrosion and rust helping galvalume typically last much longer than galvanized steel.