Bath scratches are one of the most common surface repair enquiries — and one of the most misunderstood. A scratch in a bath can range from a barely-visible surface scuff to a deep gouge that catches a fingernail. The approach to repair — and the likely result — differs significantly depending on the depth of the scratch and the material of the bath. This guide covers everything you need to know.
Types of Bath Scratches
Surface Scuffs and Marks
Light scuffs and marks on the surface of an acrylic bath — often left by cleaning products, sandpaper or scrubbing pads used inappropriately — can sometimes be polished out rather than filled. Acrylic polish applied with a soft cloth and worked in circular motions can reduce or eliminate very fine surface marks. This is one of the few bath repairs that genuinely works as a DIY fix.
Light-to-Moderate Scratches
Scratches that have penetrated through the acrylic surface to a depth you can feel with a fingernail but that haven’t broken through to the underlying fibreglass or void can be wet-sanded and polished. Starting with fine abrasive wet-and-dry paper (around 800 grit) and working progressively to 1200, 2000, then 3000 grit before polishing, these scratches can often be substantially reduced or eliminated. This is a skilled process — starting with too coarse an abrasive will worsen the appearance.
Deep Scratches and Gouges
Deep scratches that have cut through the acrylic surface entirely — creating a white or discoloured line that won’t polish out — require professional filling. A colour-matched acrylic repair compound is applied to the scratch, built up flush with the surface, cured, and then sanded and polished to blend with the surrounding bath. On white acrylic baths, the results are typically excellent.
Scratches in Enamel Baths
Scratched enamel (on cast iron or steel baths) presents different challenges. Enamel cannot be polished in the same way as acrylic — the glass-like surface doesn’t respond to wet sanding. Deep scratches in enamel that have exposed the metal beneath need to be filled with a colour-matched enamel repair compound to prevent rust formation and restore the appearance.
Scratches in Fibreglass Baths
Fibreglass (GRP) baths are less common in modern bathrooms but frequently found in older UK properties. The gel coat surface of a fibreglass bath can be scratched similarly to acrylic, and similar techniques apply — light scratches can be polished, deeper scratches require filling and finishing.
When to Call a Professional
If the scratch is deep (you can feel it clearly), runs along a significant length of the bath, is in a visually prominent position (the base or front panel), or if DIY polishing has made it worse, it’s time to call a professional. Attempting to repair deep scratches with inappropriate products often makes the repair more difficult and more expensive.
Get a Bath Scratch Repair Quote
Shazam Repairs provides specialist bath scratch repair across the UK. Send us photos of the scratched area for a free, honest assessment and no-obligation quote.
