How to Paint a Radiator

For a radiator that endures temperature changes without cracking or peeling, use heat-resistant radiator paint. While radiator-specific paints are ideal, metal paint can also work well, provided it’s designed to handle heat. Metal paints come in a range of finishes, including matte, satin and gloss, allowing you to pick a style that complements your room. If you prefer a low-sheen look, satin and matte finishes work well, while gloss offers a bit more shine.

Begin by switching off the radiator and allowing it to cool completely. Once the radiator is off, take a few moments to protect the surrounding area. Lay down dust sheets to shield your flooring and use masking tape around any valves, pipes and nearby walls. This step will ensure that you keep the paint exactly where it’s needed, avoiding splashes or drips on the surrounding surfaces.

Cleaning the radiator’s surface thoroughly will remove any dust, dirt or grease, helping the paint stick more evenly while preventing imperfections. Use a cloth dampened with a degreaser or mild soapy water to wipe down the entire radiator, paying attention to any corners or nooks.

Make sure to dry the radiator completely with a clean cloth before moving on to the painting step, as a dry surface is key to proper paint adhesion.

• If your radiator is new, a simple wipe-down with a damp cloth will remove any dust or residue from the manufacturing process, so it’s ready for painting.
• Older radiators may require a bit more preparation: if there are layers of old paint, use a paint stripper or sandpaper to remove any loose or peeling areas. Achieving a smooth, even surface will help the new paint adhere properly. For radiators with rust spots, scrub off the rust using sandpaper or a wire brush until you reach bare metal.

With your radiator clean and dry, you’re ready to start painting. A small paint roller is ideal for a smooth application, though a paintbrush can give you greater control over hard-to-reach areas. Begin at the top of the radiator and work your way down to help prevent drips and ensure even coverage. Aim for a thin, even coat, which will help you get a professional finish.

A second coat of paint will give your radiator a deeper colour and ensure even coverage across the surface. Before you begin applying again, make sure the first coat is fully dry by following the drying time recommended on your paint can. Then, using the same technique, apply a second thin layer of paint, concentrating on any areas that look patchy or less even. This final coat will complete your radiator’s fresh new look.

Once your second coat has dried, it’s time to tidy up. Carefully peel off the masking tape around the edges of the radiator, being gentle to avoid pulling away any paint. Gather up your dust sheets and dispose of used materials, giving the space a quick clean to leave it looking neat and refreshed.

Radiator paint takes a little longer to fully cure, so it’s important to give it time before turning the radiator back on. Leave the radiator off for 24 to 48 hours, allowing the paint to harden completely. Once you’re confident it’s dry, turn the radiator on gradually to avoid any sudden temperature changes that could impact the finish.

Can you paint radiators with emulsion paint?

While it might seem tempting to use wall paint, it’s best to avoid emulsion paint on radiators. Emulsion isn’t designed to withstand high temperatures, and it can peel or crack. Instead, choose a specialist radiator or metal paint for a lasting finish.

What paint to use on radiators?

Look for specialist radiator paint or metal paint that’s designed for high-heat surfaces. This paint won’t crack or discolour with temperature changes, and it’s available in a range of finishes like matte, satin and gloss.

How do you paint a rusty radiator?

Remove any rust by scrubbing the affected areas with sandpaper or a wire brush until you reach bare metal. This step creates a smooth surface for the paint to adhere to, helping ensure a lasting, even finish.

How long does it take to paint a radiator?

Painting a radiator doesn’t take long, but drying and curing times can vary. Expect each coat to dry in 4-6 hours, with full curing taking up to 48 hours.

Can you paint a radiator yourself?

Absolutely. Painting a radiator is a straightforward DIY project. With the right tools and preparation, you can achieve a professional-looking finish that enhances your room’s style.

What colour should I paint my radiator?

Choosing the right colour depends on your room’s style. For a cohesive look, match the radiator to your wall colour so it blends in seamlessly. For a bolder choice, consider a contrasting colour or a rich tone that complements other accents in the space. Neutrals like white, grey and black are versatile options, while metallic finishes add a modern edge. Think about the atmosphere you want to create - whether a subtle look or a standout feature, the right radiator colour can make a big difference in the overall design.