How to prepare and sand metal before painting
Used products:
- Goggles
- Rubber gloves
- Face mask
- Sanding block/paper
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Used products:
Learn how to prepare a metal surface before painting it. You will be surprised how little effort it takes to prepare well for a perfect job.
Read on and set yourself up for success by following our step by step process.
How to prepare your metal fence, railing, garage door or any other metal surface depends on the status of the metal.
Understand that the preparation steps required depend on the state of your metal surface:
New or rusted metal surfaces need little preparation. Use a wire brush or sand paper to remove any flaking paint or rust. This will guarantee perfect adhesion of the metal paint on new metal/rusted metal.
Only heavy rusted surfaces and areas require (some additional) proper preparation. Use a wire brush to remove the heavy rust, flaking paint and grime from the metal surface. Use sand paper on the heavy rusted areas until the surface looks even.
For new bare metal you only need to use a wire brush to roughen the surface. This will guarantee perfect adhesion of the paint on the new metal.
Application on rusted metal requires in general some light sanding to clean and even the surface.
Wrap the paper around a sanding block and start sanding the surface. Fine sanding paper is perfect for this job since you’re only looking to smooth the metal surface slightly. Make sure to wipe away any dust before moving to the next step.
Heavy rusted metal and areas require more preparation. Use a wire brush to remove rust, flaking paint and grim from the metal surface. Coarse sand paper and probably more effort/ pressure is required to remove the heavy rust. Use sand paper on the heavy rusted areas until the surface looks even. Then, wipe away the dust with a duster or broom. This will remove any lingering dirt leftover. You are now ready to start masking.
Tip: Spot prime the heavy rusted area. To ensure a beautiful end-result, spot prime the heavy rusted areas. Let it dry before you start the first layer of Hammerite Ultima metal paint
Now you are ready to clean the metal surface and mask the areas you do not want to paint.