Bathtub refinishing cost dataset

The line that changes the arithmetic

Refinishing wins on today’s price by $2,693 and it still wins per year of tub bought — $76 against $132. ⚠️ Both of those rest on a declared assumption rather than a measurement: 8 years of coating life, with a realistic band of 5 to 10 years. And both hide the table above, where the later rounds cost $882 rather than $610 because the old layer has to come off. Two things the arithmetic cannot show, one each way: the refinishing spend is spread over decades rather than paid today, and every strip is another day without a bathroom.

What moves the figure

The substrate moves the hours rather than the materials: porcelain over steel etches fastest and cultured marble takes longest. ⚠️ The two lines that decide whether the job lasts are both invisible afterwards — the preparation hour, and the number of coats, which is $146 between the two systems here. A quote much cheaper than the others has usually taken it out of one of those. And one thing no line can fix: a fibreglass tub that flexes underfoot will crack the new surface at the flex point, because the support underneath is the actual problem.

The stripper, which is not a cosmetic question

⚠️ Most of the downsides of refinishing are about appearance. This one is not. OSHA, Methylene chloride (retrieved 2026-08-24) publishes, under that name, the case of a worker who died refinishing a bathtub in a residential bathroom using a methylene chloride paint stripper — a bathroom being the smallest and worst-ventilated room in a house, which is exactly what makes this lethal rather than unpleasant. There is a regulatory answer now as well: EPA, Risk management for methylene chloride (read 2026-08-24) says consumer paint and coating removal use was prohibited in 2019, and that the April 2024 final rule prohibits most industrial and commercial uses including paint and coating removers, with most prohibited uses phased out within two years. The practical consequence is a question worth asking out loud before anybody starts: what stripper is going into my bathroom, and what extraction is coming with it.

Line items

59% of the reference total comes from estimated rather than official figures — there is no federal price series for a tub coating. The reference job is a sound 60-inch porcelain-over-steel tub, multi-coat system, non-slip floor applied and nothing to strip: 5.2 trade hours over about 26.5 square feet of tub surface. Substrates, damage levels and systems that are not selected sit at zero quantity, so the table below is the whole catalogue rather than one job.

The reasoning behind each figure

Masking, containment and forced ventilationestimated, ±54%

• Sheeting the room, masking the tiles and fittings, and setting up a fan ducted to a window so the bathroom is under negative pressure while the work is done.
• ⚠️ This is not a formality and it is the line to check is actually happening. A bathroom is a small, badly ventilated box, which is exactly the condition that makes coating and stripping chemicals dangerous rather than merely unpleasant. Somebody working in there with the door shut and no extraction is doing it wrong.

Etching, abrasives and cleaning agentsestimated, ±56%

• Acid etch or mechanical abrasion so the coating has something to key into, then a solvent wipe. Every failure mode of a refinished tub traces back to this step rather than to the coating.
• Materially similar across the four substrates; what changes between them is the time, which is the next line.
• Priced over the inside surface of the tub, so a 72-inch tub genuinely costs more to prepare than a 60-inch one instead of both landing on the same figure.

Preparation — labour

• Between 1.8 and 2.6 hours depending on the substrate: porcelain over steel etches fastest, cultured marble takes the longest, and fibreglass sits in between because it has to be abraded rather than etched.
• ⚠️ It is the hour that decides whether the job lasts, and it is invisible in the finished tub. A quote that is much cheaper than the others has usually taken it out of here.

Repair before coating — chips and worn patchesestimated, ±55%

• Filled and faired before coating. ⚠️ A repaired chip is invisible when the tub is new and tends to be the first place the coating fails, because it is the one spot where the new surface is bonded to filler rather than to the original.
• Fillers, sealers and abrasives for the repair itself. The hours are the separate line below, because between these three what varies is overwhelmingly the time.

Repair — chips and worn patches — labour

• Modelled at 0.8 hours. ⚠️ Repair time is the least predictable part of this job, because what is under a chip is not visible until the chip is opened up.

Repair before coating — cracks in the floor of the tubestimated, ±57%

• ⚠️ Worth understanding before paying for this. A crack in the floor of a fibreglass tub usually means the tub is flexing because it was never properly bedded, and coating over a moving crack buys months. The crack is a symptom; the support underneath is the problem, and this line only prices the symptom.
• Fillers, sealers and abrasives for the repair itself. The hours are the separate line below, because between these three what varies is overwhelmingly the time.

Repair — cracks in the floor of the tub — labour

• Modelled at 1.6 hours. ⚠️ Repair time is the least predictable part of this job, because what is under a chip is not visible until the chip is opened up.

Repair before coating — rust breaking through the porcelainestimated, ±59%

• Steel or cast iron where the porcelain has failed and the metal underneath is corroding, usually around the drain or under a dripping tap. The rust has to be ground back to bright metal and sealed, and ⚠️ if it has gone all the way through, no coating fixes that — a hole in a tub is a replacement.
• Fillers, sealers and abrasives for the repair itself. The hours are the separate line below, because between these three what varies is overwhelmingly the time.

Repair — rust breaking through the porcelain — labour

• Modelled at 2.3 hours. ⚠️ Repair time is the least predictable part of this job, because what is under a chip is not visible until the chip is opened up.

Strip the previous coatingestimated, ±57%

• ⚠️ The fact that changes the whole arithmetic of refinishing, and almost nobody says it: a second coating does not go on top of the first. The old one has to come off, and this is the dearest and slowest step there is.
• ⚠️ It is also the step with the safety history. Ask what stripper is going to be used in your bathroom: methylene chloride strippers have killed workers doing exactly this job in exactly this kind of room, consumer paint and coating removal use was prohibited in 2019, and EPA’s 2024 rule prohibits most commercial uses including paint and coating removers. Safer alternatives exist and a professional should already be using one.

Strip the previous coating — labour

• Modelled at 3.5 hours, which is more than the preparation of a bare tub and often more than the coating itself.
• This is why a tub cannot be refinished indefinitely, and why the second refinish is worse value than the first even though the brochure price looks the same.

Bonding primer and two-coat topcoatestimated, ±46%

• Bonding primer and two coats of topcoat. It is what most advertised prices are quoting for, and it is a real job — but it is the thinner of the two and it is where the shorter end of the lifespan comes from.
• Priced over the inside surface of the tub, so a bigger tub uses proportionally more — small money next to the hours, but real.

Bonding primer and multi-coat industrial topcoatestimated, ±46%

• More coats, and typically a two-part polyurethane or an epoxy-acrylic rather than a single-part enamel. It costs meaningfully more, it takes longer to cure, and it is the version that gets near the lifespan the industry advertises. ⚠️ If a quote is unusually cheap, the number of coats is the thing to ask about, because it is the part you cannot see.
• ⚠️ The number of coats is the single biggest difference between a refinish that lasts near the advertised life and one that does not, and it is the part of the job you cannot inspect afterwards. It is worth asking for it in writing.

Spray the coating — labour

• Between 2.2 and 3.4 hours by system, plus a quarter of an hour more when the colour is changing, because covering a dark tub with a light coating takes an extra pass.
• Cure time is not labour and is not priced: the tub is out of use for a day or two afterwards, which is a real cost in a one-bathroom house and no money at all in a two-bathroom one.

Colour change, extra coverageestimated, ±55%

• Extra material to cover a dark or strongly coloured original. Going from avocado to white is the commonest reason a sound tub gets refinished at all.

Applied non-slip floorestimated, ±56%

• ⚠️ Worth having and worth understanding. A refinished tub floor is smoother than the original moulded-in texture, which is a real hazard: the bathroom is where a lot of older adult falls happen.
• ⚠️ And it is the honest downside of the whole product: an applied non-slip surface is a texture in a coating, and it is harder to clean and shorter-lived than a moulded-in one. A mat is the free alternative and it works.

Refinish the surrounding tile or panelestimated, ±51%

• The same system taken up the walls of the alcove. It is what makes a refinished bathroom look finished rather than like a white tub in a coloured room, and it is usually the reason the quote is bigger than expected.
• ⚠️ Grout lines do not disappear under a coating — they get filled and flattened, which some people like and some people find looks plastic. Ask to see a finished one before deciding.

Refinish the walls — labour

• One hour per 22 square feet of wall, which is slower per foot than the tub because the masking is more fiddly and the surface is bigger.

Not included in this dataset

A tub that has rusted through

⚠️ A coating is a surface, not a repair. If the rust has gone all the way through the steel, or the tub floor has cracked because it is unsupported, no refinish fixes that — and a company that quotes for it anyway has told you something. Our bathtub replacement page prices the alternative.

Cure time, and a bathroom you cannot use

Not a cost and often the deciding factor. The tub is out of use for a day or two while the coating hardens, and full cure takes longer. In a two-bathroom house that is nothing; in a one-bathroom house with a family it is the reason people replace instead.

The plumbing

Refinishing does not touch the valve, the spout, the diverter or the drain. If the taps drip or the diverter has failed, that is a plumbing job and it should be done before the coating rather than after — a dripping tap is one of the ways a new surface gets stained in its first year.

A do-it-yourself kit

⚠️ They exist, they cost a fraction of this, and this page will not pretend otherwise. What they do not come with is extraction, a supplied-air respirator or the preparation that decides the outcome. The chemistry that makes these coatings bond is the chemistry that makes them dangerous in a small unventilated room, and a bathroom is the smallest room in the house.

How long yours will actually last

The lifespan used in the comparison on this page is a declared model assumption of eight years, with a realistic band of five to ten. It is not a measurement of ours, and it depends on the preparation, the number of coats and how the tub is cleaned afterwards — abrasive cleaners take years off it.