Preparing Galvanised Steel For Painting

Remove any handles or other attachments from the metal. Galvanized steel is coated with a thin layer of oil and passivator that protects it from water and weather damage. Iron or zinc phosphate treatments can increase the adherence and durabil ity of the paint film.
preparing galvanised steel for painting

In addition to sspc sp 16 referenced earlier astm international has published standard practice d6386 10 standard practice for preparation of zinc hot dip galvanized coated iron and steel product and hardware surfaces for painting.

Preparing galvanised steel for painting. Krzywicki mentions two alterna tives for preparing partially weathered galvanized steel that is to be coated phosphating and acrylic passivation. Rinse the metal with a weak solution of water and ammonia and allow it to dry. T wash or its proprietary equivalent. Scour older galvanized steel.

Clean the surfacethe goal is to remove any dust dirt or other particulate buildup that could affect the texture of. Preparing hdg for paint communicate with the galvanizer. Once the condition of the. How to prepare galvanized steel for painting 1.

Product manufac turers should be consulted for applica tion specifics. Their major disadvantage is the absence of any visible. Once youve finished cleaning the steel let it rest until all traces of the degreaser have. You can still add a coat of paint to your galvanized metal surface as long as you have a few important household tools and you follow these simple steps.

Wash the metal thoroughly with hot soapy water. Rinse the metal and let it dry completely for several hours. Sand the entire. There are documents available that describe methods of preparing surfaces of new and weathered hot dip galvanized steel for painting.

Determine the condition of the coating. As galvanized steel weathers naturally byproducts develop on the surface. Allow the surface to dry. Thats great for preventing rust but it also prevents solid paint adhesion.

Spray the surface with the solution then scrub it with a clean lint free. Heres how to paint galvanized metal. Etch primers have also been used successfully. Clean the steel with a chemical degreaser.

If hot dip galvanized steel is going to be painted communication between the. Despite the fact that this preparation process has been available for some. Prepping the surface 1.