How To Paint Aluminum Sheet Metal

Apply a cold water and phosphoric acid mixture to prepare the aluminum surfaces to accept and cling to paint.

How to paint aluminum sheet metal.

Aluminium s smooth surface has to be abraded to allow the paint to have somewhere to get in and hold on to. Apply a conversion coating to finish the acid etching process. Scrub any greasy or oily areas using a degreaser and a brush. With most materials this can be done with sandpaper but with aluminium you are best off using an etching primer and leaving it for 4 6 hours before painting.

Spray the sheet metal with white vinegar and wipe it down with a clean rag. Painted sheet metal gives any roofing project a highly customized look without sacrificing durability and performance. This will remove any dust and dirt from the surface of the sheet metal. How to paint sheet aluminum step 1.

Remove old paint with a paint stripper. Preparing the project 1. There are many types of aluminum primer to use after you have prepared the surface. Clean bare aluminum with warm water and a degreasing agent.

After cleaning the panels they should be rinsed completely with clean water. Follow the instructions that came with the paint stripper as each brand could. Spray the metal with compressed air. Fill a tub or bucket with warm water then add a few.

Aluminum needs a pretreatment on it because paint will not stick. Panels should then be left to air dry. You can choose to roll on spray on or brush on a professional aluminum primer. They all work better than smearing paint on the slick surface of aluminum.

Allow the surface to dry and cure for four full. For your application a class 1a film would work. To prep metal for paint adhesion you must first clean it with soap and water remove light rust with a wire brush sand it with fine grain sandpaper and then in most cases prime. Link to product info on amazon and white topcoat.

Wash the entire sheet aluminum surface using a. Both steel and aluminum sheet metal can be painted to your customer s specifications. You could use a self etching primer affil. Scrape rust away with warm.

The vinegar s acidity will further abrade. Wash the brush using.