How to paint metal: a step-by-step guide to painting metal surfaces
Painting metal may seem intimidating at first, but with the right prep and tools, it's a simple and satisfying job — and the results can be stunning. Whether you’re updating a radiator, metal door, pipework, or furniture, a smooth, durable finish is within reach.
Our range of interior paints for metal is designed to help you transform metal surfaces with the same elegant, earthy tones we offer for walls and ceilings. So if you're after a seamless, coordinated look (a trend known as colour washing), you can confidently paint your metalwork in exactly the same shade.
In this guide, we’ll show you exactly how to paint metal – from prep to finish – with top tips for long-lasting results.
What is colour washing?
Colour washing is an interior design technique where walls, woodwork and metalwork are all painted in the same colour. It helps create a unified, flowing look that makes rooms feel larger and more inviting. With our collection of mindful, earthy paints now available in metal-compatible formulas, it’s never been easier to carry your favourite tone across radiators, doors, skirting boards and more.
But before you dive into painting, it’s essential to know how to prepare metal for painting. Here’s how to get it right.
How to paint metal: preparation and painting tips
1. Remove old paint
Before anything else, you need to strip the surface of any loose or flaking paint. This ensures your new paint will adhere smoothly and evenly.
Tools: Use a wire brush or a wire brush drill attachment to gently remove chipped paint. Work methodically across the surface.
2. Eliminate rust
Metal, especially in damp environments (like bathrooms or around radiators), can develop rust over time. To tackle this:
- Use a rust remover if the corrosion is deep.
- Clean off any residue from the rust remover with acetone — do not use water as it won’t remove oily film.
- For light surface rust, a wire brush may be enough.
3. Clean the surface thoroughly
Once old paint and rust are removed, clean the surface with a damp cloth followed by acetone or a degreaser to ensure it’s free of grease, dust or residue.
Why this matters: Any leftover dirt or oil will prevent your paint from bonding properly.
4. Scuff and prime the metal
For your metal paint to adhere correctly, the surface must be slightly rough. Use a scuff pad or fine-grit sandpaper to create microscopic grooves on the metal.
Then apply a suitable metal primer. This acts as a bonding layer and helps prevent rust in the future. Let it dry thoroughly before painting.
5. Time to paint!
Once your primer is fully dry, it’s time to paint.
- Stir your paint well and follow the product instructions carefully.
- Use a high-quality brush for a smooth application — our metal paints are designed with a thinner consistency, making them easy to work with and less likely to leave brush marks.
- Apply paint in long, even strokes, always brushing in the same direction for a neater finish.
Depending on the item and paint colour, two coats may be necessary for full coverage.
Tip: Let the paint dry completely before moving, touching or reinstalling the item. Rushing this can spoil your hard work.
Where can I use paint for metal?
Our metal-compatible interior paints are ideal for:
- Radiators (ensure they are cool and rust-free)
- Metal skirting trims or railings
- Metal furniture legs
- Pipes and hardware
- Interior metal doors
Note: Our paints are for indoor use only, so not suitable for exterior gates, fences or outdoor furniture.
Final thoughts: painting metal surfaces made easy
Learning how to paint metal the right way ensures not only a beautiful finish, but also long-lasting durability. With our low-VOC, UK-manufactured paints available in metal, wood, wall and ceiling options, you can easily match every surface in your room for a cohesive, contemporary look.
Explore our range of paint for metal surfaces and enjoy transforming your interior space with colour – from the walls to the smallest details.