Hammerite White Gloss Radiator Spray Paint - 400ml

Hammerite White Gloss Radiator Spray Paint is a specialist aerosol radiator paint designed to give steel and cast iron radiators, pipes and towel rails a smooth, durable gloss finish without the brush marks of traditional enamel. This 400ml aerosol is a popular choice for anyone searching for radiator spray paint that dries quickly and resists yellowing, making it ideal for a same-day radiator refresh.

Key Features

• High gloss white finish that resists yellowing over time
• Fast, even aerosol application with no brush strokes or drips
• Touch dry in around 1 hour, recoatable the same day
• Heat resistant formula, typically rated to withstand normal domestic radiator temperatures
• Suitable for steel and cast iron radiators, pipes and towel rails
• Good coverage and colour retention from a single 400ml can
• Ideal for touch-ups as well as full radiator respray jobs

How to Use

Before you start, make sure the radiator is switched off and completely cool. Clean the surface thoroughly to remove any grease, dust and old wax or polish. If the existing paint is glossy, key it lightly with fine abrasive paper so the new coat has something to grip, then wipe away any dust with a dry cloth. Treat any rust spots with a suitable rust treatment and allow any bare metal to be primed before spraying, as this will help the topcoat adhere properly and last longer.

Shake the can thoroughly for at least a minute before use and periodically during application. Hold the can approximately 25-30cm from the radiator and spray in light, even, sweeping strokes, working from top to bottom and slightly overlapping each pass to avoid runs. It is better to apply two or three thin coats than one heavy coat. Leave the paint to become touch dry, generally around an hour, before applying a further coat if needed. Allow the radiator to cure fully, typically 24-48 hours, before turning the heating back on, as this lets the finish harden properly and reduces the risk of tackiness or odour when the radiator warms up.

Technical Specifications

Frequently Asked Questions

Can you spray paint radiators?

Yes. A dedicated radiator spray paint like this Hammerite aerosol is formulated to withstand the heat a radiator reaches during normal use, giving a smooth, even gloss finish that is harder to achieve with a brush, particularly on ridged or panel-style radiators.

How do you paint a radiator with spray paint?

Turn the radiator off and let it cool fully, clean and lightly abrade the surface, mask off the wall and floor around it, then apply several thin, even coats from around 25-30cm away, allowing each coat to become touch dry before adding the next.

How long does radiator paint take to dry?

This spray is typically touch dry within about an hour and can usually be recoated the same day. For a full cure that can safely withstand the radiator being switched back on, allow around 24-48 hours.

Can you paint radiator pipes with this?

Yes, this aerosol is suitable for pipework as well as the radiator body, giving a neat, matching finish. Mask off any areas you do not want painted before spraying.

Do you need a primer before using radiator spray paint?

If the radiator has bare or rusty metal exposed, it is best to treat the rust and apply a suitable metal primer first. If the existing paintwork is sound, simply clean and key it before applying this topcoat.

Is this the same as normal spray paint?

No, this is a specialist radiator enamel formulated to cope with the heat a radiator produces, unlike general-purpose spray paints which can discolour or lose adhesion when heated repeatedly.