Acrylic Bathtub Care & Cleaning
Acrylic asks for far less than most people give it. Nearly every damaged tub we hear
about was damaged by cleaning — the wrong product, or the right product applied with too much conviction. Warm water and a soft cloth are usually all you need to keep a Gramans acrylic freestanding bathtub looking its best.
This page covers everyday cleaning, the products that permanently harm acrylic, and how to deal with limescale, staining, and scratches. If you only read one part, read the next one.
What to use, and what never to
Safe on acrylic
- Warm water and a soft cloth
- Mild liquid dish soap
- Cleaners labelled safe for acrylic
- White vinegar diluted 1:1 with water
- Microfibre cloths and soft sponges
- Non-abrasive acrylic polish
Rinse and dry after each bath. That single habit prevents most limescale and soap film before it starts.
Never use
- Abrasive powders and creams
- Scouring pads and steel wool
- Melamine foam "magic" erasers
- Acetone and nail polish remover
- Undiluted bleach
- Ammonia and glass cleaner
- Solvent or petroleum-based cleaners
- Drain chemicals on the tub surface
Melamine erasers are the one that surprises people. They feel like sponges but work by abrasion, and they will dull an acrylic finish permanently.
Everyday cleaning
Warm water, a few drops of mild liquid soap, and a soft cloth. Work in gentle circles, rinse thoroughly, and dry with a towel. Acrylic is non-porous — nothing soaks into it — so there is no reason to scrub, and no benefit to a stronger product.
Drying is the step people skip and the one that matters most. Water left standing is what leaves mineral marks.
Fixing specific problems
| Problem | What to do |
|---|---|
| Limescale and water marks | White vinegar diluted 1:1 with warm water. Apply, leave five to ten minutes, rinse fully. Repeat rather than scrubbing — the acid does the work, not pressure. |
| Soap film and dullness | Mild soap and warm water first. If the surface still looks flat, a non-abrasive acrylic polish will restore the gloss. |
| Dye stains from bath bombs, hair colour, or strongly pigmented products | Act quickly — most lift with soap and water within a few hours and become permanent after a day or two. If soap fails, try the vinegar solution. Never reach for an abrasive. |
| Oily residue | Warm water and dish soap, which is formulated for exactly this. Rinse well; oil left in place attracts dirt and dulls the finish over time. |
| Scratches | See the next section — the fix depends entirely on depth. |
Scratches, and why they can be repaired
This is where acrylic differs from enamelled steel or cast iron, and it works in your favour. An enamel chip exposes the metal underneath and can only be patched. A Gramans tub is formed from a solid acrylic sheet with the colour running right through it, bonded to a reinforcing backing. Polish or sand the top of that layer and what you expose is more of the same white acrylic — which is why a scratch can genuinely be removed rather than filled.
Repairing a scratch
- Assess the depth: Run a fingernail across the scratch. If it glides over, the scratch is shallow. If it catches, you will need to sand before polishing.
- Polish shallow scratches: Apply a non-abrasive acrylic polishing compound with a soft cloth, working in small circles with light pressure. Wipe clean and check. Two or three passes are normal.
- Wet-sand deeper ones: Working wet throughout, start at 1500 grit, then 2000, then 2500, sanding lightly in one direction and rinsing between grits. Finish with polish. Take your time — this is not a step to rush. Depending on the depth, wet sanding and polishing may restore the surface, but improper sanding can change the finish.
- Stop and ask: If the scratch is deep enough to catch a nail firmly, or if you are at all unsure, email us before you start. We would much rather point you to a professional than help you finish the job on a $2,800 tub.
Bath products
Use them. Just rinse afterwards rather than leaving residue overnight.
| Product | Verdict |
|---|---|
| Bath salts | Fine. Rinse well — undissolved salt is mildly abrasive underfoot. |
| Bath oils | Fine. Wash the surface with soap afterwards; oil left in place dulls the finish. |
| Bath bombs | Fine, with a caveat. Strongly pigmented ones can stain if left sitting. Rinse the same evening. |
| Bubble bath | Fine. |
| Hair dye | Hair dye — One of the products to be most careful with on acrylic. Wipe any splash immediately — within minutes, not hours. |
Four things that damage acrylic, and nobody expects
Candles on the rim
Acrylic begins to soften well below the temperature of a candle base or a hot ceramic holder. A tealight left on the rim can leave a permanent dimple. Use a stand or a nearby surface instead.
Suction-cup mats left in place
They trap water and cleaning residue underneath, and over months the cups can discolour the surface in a ring pattern that will not polish out. Lift the mat and hang it after each use.
Using the tub as a utility sink
Soaking laundry in bleach, cleaning paintbrushes, washing a dog with a medicated shampoo — all routine, all capable of doing more damage in one afternoon than years of ordinary bathing.
Standing water around the drain
A slow drain leaves a ring of mineral deposit that builds into a stubborn stain. If the water is draining slowly, clear the trap — but never pour drain chemicals into a tub without running water straight through afterwards, and never let those chemicals sit against the acrylic.
A note on the warranty. Damage from abrasive cleaners, solvents, and harsh chemicals is excluded from our limited warranty, and that exclusion exists because this kind of damage is preventable rather than because we are looking for a reason to decline. Everything on the "safe" list above is safe for your warranty too.
Unsure about a product before you use it? Email team@gramansbathware.com and we will tell you.
