Painting Galvalume Siding

Common household products like comet mineral spirits and chlorine bleach can all be used to prepare galvanized steel for painting.

Painting galvalume siding.

If you have a kitchen then you probably already have this handy solution. You can also use oil based alkyd paint but. Pour an exterior grade rust inhibiting primer into a paint tray and apply it to each roof panel. The areas to be painted should be dry and clean of visible soil grease oil or other contaminants.

The vinegar is a mild acid which acts to etch the galvanized coating so the paint will stick. Treat the sheet steel with an etching primer or flaking will result. Wipe the galvanized surface down with white vinegar. Prime the surface with a primer made for metal.

Usually it s necessary to clean off this coating before applying any paint. The following paints are suggested for field painting galvalume. All of the listed coatings will give good results. Galvalume is a type of sheet steel used in a variety of applications including roofing siding furniture gutters and pipe.

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. Galvalume will reject paint unless it is properly treated. To paint galvalume good coating practice should be observed as with painting any surface. Use a long handled paint roller and apply primer until no portion of the metal is visible.

Most galvanized materials will have a light coat of oil to protect the surface while in transition. All you have to do is simply apply the vinegar to a clean rag and then wipe down the galvanized surface. 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. Go over the metal with a wire brush to remove any oxidation.

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. The secret to painting galvanized steel is white vinegar.