Over time, even the most durable bathtubs can develop scratches that dull their appearance. Whether your bath is acrylic, fibreglass, or enamelled cast iron, there are several effective ways to restore its smooth surface and shine. In this guide, we’ll show you how to tackle minor and deep scratches safely and efficiently.

1. Identify Your Bathtub Type

Before starting, it’s important to know what material your bath is made of:

• Acrylic – lightweight, warm to the touch

• Fibreglass – often with a gel coat finish

• Enamelled cast iron or steel – cold to the touch with a glossy finish

Different materials require different repair methods, so this step is key.

2. Fixing Light Scratches

For surface-level marks and scuffs, try these simple remedies:

• Toothpaste (non-gel) or a baking soda paste – these mild abrasives can gently polish out light scratches.

• Specialist cleaners like Bar Keeper’s Friend – ideal for acrylic and porcelain finishes.

Use a soft cloth and rub in small, circular motions. Rinse thoroughly and dry with a clean towel.

3. Smoothing Deeper Scratches with Wet Sanding

If the scratch is more noticeable, wet sanding can help:

What you’ll need:

• 400 to 600 grit wet/dry sandpaper

• A damp sponge

• Polishing compound suitable for your bath’s surface

Steps:

1. Clean and dry the surface thoroughly.

2. Soak the sandpaper and sand the scratched area in gentle, circular motions.

3. Rinse and repeat until the scratch fades.

4. Polish the area to restore shine.

Always keep the surface wet while sanding to avoid further damage.

4. Repair Kits for Deep Scratches

For larger chips or deep marks, consider using a bath repair kit. These typically include:

• Filler and hardener

• Sandpaper

• Colour-matched topcoat

Apply the filler, sand once dry, and finish with the sealing paint. Be sure to choose a kit compatible with your bath’s material.

5. Final Touches and Long-Term Care

Once repaired:

• Polish the area with a gentle compound.

• Apply a protective wax or sealant if recommended.

• Clean regularly with non-abrasive products to prevent new scratches.