DIY Guide: the best way to remove paint from metal
Whether you want to respray or repaint your metal furniture, renew defective coating from motorcycle and bike parts, recoat a tank, or remove graffiti stains, the first step of paint removal from metal surfaces is to use the suitable paint remover for metal – mostly that’s a chemical paint stripper for metal. Proper adhesion of the new paint and coating is only achieved if the painted metal surface is completely stripped and after that carefully pretreated.
Paint removal from metal surfaces at home is not recommended for everyone, especially when you have no experienced in safely handling chemicals. If that is the case we recommend you take the metal parts to a local metal stripping service. If you are confident in your abilities, you can try to save money and remove paint from metal at home with a chemical paint stripper for metal. Keep in mind that even the strongest paint stripper is only as potent as the instructions are followed adequately.
Therefore, in this article you learn the arguably safest and best way to remove paint from metal. Additionally you are presented with paint strippers products you can buy in the Philippines. Also, you will learn about the dangers of chemically stripping paint by yourself.
Safe use of chemical paint remover for metal
Before you buy the best paint stripper to strip paint from metal parts at home, it is paramount to create a safe working space that protects not only personal health but also the environment. Also: don’t rush, paint stripping takes time and attention.
Before removing paint at home you should follow these safety steps:
- Make sure your work space is well-ventilated
- Has a solid floor (a garage is a good option)
- Wear safety clothing (long sleeves and pants), including gloves, goggles and a mask with an air-purifying respirator
- Have a surface prepared to place the item on during the stripping process, such as a drop cloth or cardboard
If you decide to not strip the paint from metal yourself, there are professionals in practically every part of the Philippines who strip even powder coating from metal for you at a reasonable price. Stripping paint off larger parts of metal is always best left to professionals.
Chemical paint stripper: Ingredients
Paint removers for metal at hardware stores are available for everyone. That doesn’t mean those paint removers aren’t dangerous for health and environment. Therefore, try to stay away from paint removers for metal that contain carcinogens. Most paint strippers for metal contain the following toxic, polluting solvents:
- N-Methyl-2-pyrrolidon (NMP)
- Methyl ethyl ketone
- Methylene chloride (MC/DCM)
Even without the mentioned ingredients, paint strippers are composed of hazardous ingredients. Always read and carefully follow what’s on the safety data sheet and technical data sheet that comes with the paint remover for metal. It is also vitally important to be aware of the possible health and environmental damage that paint strippers can cause. For example, never allow them to reach groundwater.
In order to work as a potent paint remover, the paint remover for metal consists of solvents that are able to penetrate a coating so that it loosens and detaches from the surface.
Stripping paint off metal – buy chemical stripper
If you are confident that you are able to use paint stripper at home, you will find the best paint removers for metal at your local specialist paint shop or even online. Below, you find suggestions for paint removers suitable for metal surfaces. We mentioned the paint stripper’s price and chemical active ingredient. The list helps you in making the best choice in buying the best paint remover metal:
|Paint stripper metal||Type/application||Removes||Based on||Average Price|
|Stripsol Paint Stripper||liquid/brush or roller||acrylics, acrylic latexes, polyurethane, and other resin coatings||Dipropylene Glycol Monomethyl Ether, Glycol Ether EB||₱100 for 350 cc|
|Boysen Paint and Varnish Remover #141||liquid/brush||wax-based paints||dichloromethane, methanol, Toluene||₱130 for 1 Liter|
|Goof Off Professional Strength Remover FG661||liquid/cloth||adhesives, crayon, marker, gum, scuff marks, stickers, asphalt, dried latex paint, caulk, tree sap||Acetone, Xylene||₱420 for 6oz (117mL)|
First perform a spot test on inconspicuous area
After having bought the paint stripper of your choice, you can apply it on the coated metal part as described in the data sheet. However, to avoid incompatibility with the substrate or paint you should first:
- Spot test the metal item with the paint remover.
By testing the paint stripper you will be able to see after several minutes to hours if it works for the type of coating on the metal part. If you see bubbles and loose chips, you have green light for the next step: applying paint stripper on the whole metal part.
How-to: Stripping paint off metal
A lot of paint removers for metal are either liquid or have a gel-like and creamy consistency. The advantage of a rather viscous paint stripper is that you can apply it on angled surfaces where liquid paint strippers for metal would run off.
Before you start, follow the safety steps previously described → ventilation, solid floor, safety clothes, air-purifying respirator, prepared surface.
Here is the best way to strip paint from metal:
- Apply the paint stripper to the painted metal surface with a brush or roller. Work in manageable sections, i.e. 1m x 1m
- Leave the paint stripper for the time recommended in the instructions.
- Cover the treated section with plastic film or sheet to keep the paint stripper from drying too quickly.
- After some hours, remove the plastic and try to scrape the paint with a bladed paint scraper.
- If the paint is still stuck fast, allow more time for it to work.
- If you are able to lift the paint off, move ahead and begin applying paint remover on the next section.
- Collect the scraped paint material in a bucket and make sure to dispose as hazardous waste.
- Use a scrubbing pad for places that are hard to reach.
- Repeat the procedure if needed.
After successfully stripping the paint you can:
- Wash residue off carefully, wash it down with detergent, and dry the surface.
To prepare it for following steps, ensure it will not corrode, and completely remove all the paint and solvent:
- Go over the part with an abrasive pad/ steel wool or electric sander.
Depending on the type of metal and the intended follow-up coating, abrasive sandblasting is the next step of treatment to ensure ideal adhesion before applying paint or powder coating in the colour and finish of your choice.