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Small scratches can sometimes appear while a cast iron fireplace is being handled, fitted or cleaned. The correct repair will depend on whether the mark is on a matt-black or polished area.
Check the Fireplace Finish
Before repairing the scratch, check the finish of the affected area. A cast iron fireplace may have:
High-temperature matt-black spray paint may be suitable for matt-black areas. It should not be applied to polished cast iron, tiles, stone surrounds or the hearth.
Prepare the Fireplace
Make sure the fireplace is completely cold. Remove any dust with a soft brush or dry cloth. The surface must be clean and dry before applying paint. Protect all surrounding areas from overspray, including:
Use masking tape and suitable coverings to protect anything that should not be painted. Work in a well-ventilated area and follow all safety instructions supplied with the paint.
Touching Up Matt-Black Cast Iron
Our High Temp Matt Black Paint can be used to refresh suitable matt-black areas. Shake the can thoroughly before use. Hold the can at the distance recommended on the product instructions and apply the paint in light, even coats. Several thin coats will normally give a better finish than one heavy coat. Allow each coat to dry before applying another. Avoid concentrating too much paint in one place, as this may cause runs or an uneven finish. For a small scratch, carefully mask around the area to control the spray. Bear in mind that a very small local repair may still look slightly different from the surrounding cast iron.
What If the Scratch Is Large?
A small scratch can often be touched up locally. If a larger section is faded, chipped or damaged, painting only the scratch may leave a visible difference in colour or texture. It may be better to refinish the full section so the appearance remains even. Contact us before starting if you are unsure about the original finish or the best area to repaint.
Scratches on Polished Cast Iron
Do not apply matt-black paint to polished cast iron. A light surface mark may improve when gently treated with Multi Use Metal Polish. Apply a small amount to a clean cloth and test it on a less noticeable area first. Do not rub aggressively, as this may make the mark worse. Deep scratches in polished cast iron may require professional restoration.
What About Highlighted Fireplaces?
Highlighted cast iron fireplaces contain both polished and matt-black areas. Mask the polished details carefully before using spray paint. Overspray can dull the polished finish and may be difficult to remove. Only apply the paint to the matt-black areas that need refreshing.
What About Black Grate Polish?
A fireplace finished with black grate polish should normally be refreshed using the same type of product rather than spray paint. Read our guide to black leading a cast iron fireplace before treating the damaged area.
Avoid Painting Working Parts
Do not spray:
Always check that the paint is suitable for the surface and follow the instructions supplied with the product. You can also browse our complete range of cast iron fireplaces or contact us if you need advice about repairing or maintaining your fireplace. For general cleaning and maintenance advice, read our guide on how to clean and maintain a cast iron fireplace.
Phone
01773 718718
Email
sales@castfireplaces.co.uk
