You have probably painted walls but do you have any experience painting metal? If not, you don’t have to break a sweat. You will learn just what you need to do in order to get started and ensure that you’ve done a good job at the same time.
Transitioning To Painting Metal
1. Surface cleaning
You’ll want to have a clean surface before you begin in order to avoid paint failure. Cleaning up the surface may include light sanding to remove any gloss from an already painted surface. Follow this by applying mineral spirit for proper adhesion.
Using mineral spirits on new metal to remove any grease and then applying a rust-inhibitor primer should
adequately prepare the metal surface before you begin painting. The primer is important as it prevents you from repainting all over again.
For surfaces with a tough stains, you may use the recommended cleaning agents for cleaning metal surface. Mild detergents are another alternative.
This should be done immediately after cleaning the surface in order to avoid any dirt or dust from accumulating on the freshly cleaned surface. When it comes to priming the surface, there are several things that you ought to consider before you proceed. These are:
• Type of metal
• Desired appearance
• Environmental conditions
• Performance requirement
3. Deal With Peeling Paint
There are several ways in which you can use to remove the peeling paint from an already painted metal. Using power tools would get the job done much quicker and with little effort. Unfortunately, they may end up cleaning the metal surface in a manner that may bring about paint adhesion.
Other alternatives to dealing with peeling paint would include, scrapping, hand wire brushing and sanding. The process may be slow but may the job done pretty well.
4. Rust removal
You will find that rust may hinder a proper paint job. So what do you do? Deal with the rust in the same manner you would deal with peeling paint. This would apply if it’s on a lightly rusted surface. You’ll therefore want to brush off the loose rust, sand the rust-ridden area and finally apply a rust inhibitive primer which is also known as a rust converter. A zinc chromate primer would be useful for this. When it’s all dried up, it will have a dull red color.
Getting Rid Of Holes & Dents
Finally, before you cover up the holes, ensure that you have cleaned up the surface. Sanding and wiping with a degreaser which is mixed up with mineral spirits should be the first thing. You’ll apply different epoxies for different hole and dent sizes.
For the big holes, use epoxy filler which is applied on the edge of the hole. You’ll press a fiberglass mesh which is slightly larger than the hole through the filler. For small holes, you’ll inject directly in the hole and/or dent an epoxy-based composite.
As stated earlier, you need to consider the kind of metal that you’ll be painting. Consider the following:
• Rusty metal. Another way of cleaning rusty metal would be using acid pickling, but it can be hazardous and it would be best to stick to the methods stated above. Ensure to use paint with little salt and water.
• Aluminum. Turpentine and abrasive pads will help eliminate the protective painting then wash it and finally paint using water-based acrylic paint.
• Galvanized iron. Ensure you’ve used water-based acrylic galvanized primer because these kinds are normally used in gutters and the roof.
• Copper. Use the red oxide metal primer while preparing the surface.
• Brass. You’ll apply two coats of paints after using the red oxide metal primer.