A dated fiberglass shower gives you three genuinely different jobs to price, and they are not variations on each other: reglazing the surface you have, dropping an acrylic liner over it, or tearing the unit out and replacing it. In 2026 those run roughly $400 to $1,100, $1,000 to $4,500, and $2,500 to $9,000 respectively. The spread inside each of those is wider than most cost guides admit, and the thing that decides which route you are actually eligible for is not your budget, it is the condition of the substrate underneath the finish. This guide prices all three side by side and tells you how to work out which one your shower qualifies for before you call anyone.
The three routes at a glance
Every quote you get will be one of these three. Refinishers quote the first, bath remodel franchises quote the second, and general contractors quote the third, which is why three companies looking at the same shower can come back with numbers an order of magnitude apart. They are not competing on price. They are quoting different jobs.
| Route | Typical installed cost | Realistic lifespan | Time out of service |
|---|---|---|---|
| Reglaze / refinish (pro) | $400 – $1,100 | 8 – 15 years | 24 – 72 hours to cure |
| Reglaze / refinish (DIY kit) | Materials only | 3 – 7 years | 3 days to cure, 1 – 2 days of work |
| Acrylic liner / wall system | $1,000 – $4,500 | 15 – 20 years | 1 – 2 days |
| Full replacement, like for like | $2,500 – $9,000 | 20 – 30 years | 3 – 7 days |
- A tub-and-shower combo costs more than a standalone stall on every one of these routes, usually 30 to 50 percent more, because there is simply more surface area and more edge to mask and seal.
- The lifespans above assume the finish is maintained. Abrasive cleaners take years off a reglazed surface faster than anything else, and no refinisher’s warranty covers them.
Reglazing: what $400 to $1,100 actually buys
Professional reglazing is a chemical bond, not a paint job. The installer degreases the unit, etches or sands the gel coat until the gloss is completely dull, repairs chips and spider cracks with a filler, and then sprays two to four coats of a two-part epoxy or polyurethane topcoat. The bond is only as good as the etch, which is why the prep is most of the labor and most of the reason a cheap quote turns into a peeling shower eighteen months later.
Fiberglass sits at the expensive end of the refinishing market rather than the cheap end, which surprises people. A cast iron tub is a stable, rigid, chemically simple substrate. A fiberglass or acrylic unit flexes underfoot, has a gel coat that may already be crazed, and often has repairs from previous owners hiding under it. National guides put fiberglass refinishing at $300 to $1,000; expect the shower-specific number to land above the tub-specific one because a shower has three walls of surface area and a pan that gets stood on.
The single biggest line item you can control is how much repair work happens before the spray. A unit with a soft spot in the floor needs the pan reinforced from below or backfilled before it can be coated, and that is a separate few hundred dollars that will not appear on a phone quote.
- Ask what topcoat is being sprayed. A two-part epoxy or a polyurethane-acrylic is what you want; a single-component enamel is a paint and will fail.
- Ask for the warranty in writing and read what voids it. Five years is common; one year means the installer does not expect it to last.
- Color changes cost more than white-on-white because coverage takes another coat.
- If the shower has a built-in soap dish or grab bar, ask whether it is being masked or coated. Masked edges are where peeling starts.
The liner route, and why the quotes vary so wildly
An acrylic liner is a vacuum-formed shell made to sit inside your existing unit, usually paired with wall panels, bonded down and sealed at the perimeter. It is a one-day job with no demolition, which is the entire pitch. Nationally, liner and wall-system work runs about $1,000 to $4,500 for a shower; a full branded tub-to-shower conversion with wall surround and accessories climbs into the $3,500 to $7,000 range, and franchise pricing sits at the top of that.
The reason two liner quotes can differ by three thousand dollars is that the word covers two different products. A stock liner in a standard alcove size is a commodity. A custom-templated shell for a non-standard opening, plus wall panels, plus a new door, plus fixture trim, is most of a bathroom remodel sold as a one-day install.
The failure mode worth knowing about before you sign: if water gets between the liner and the original unit, it has nowhere to go and nothing to dry it. That is a slow, invisible problem that ends in mold and a soft floor, and it is caused by a bad perimeter seal or by installing over a unit that was already leaking. A liner is a legitimate product on a sound shower and a way of burying a problem on an unsound one.
Replacement: the line items and the geography problem
Full replacement is the honest answer when the substrate is gone, and it is priced very differently depending on where you live. National estimates for a like-for-like fiberglass shower swap cluster around $1,200 to $4,000 installed. Line-itemed quotes from high-cost metro contractors for the same scope come out at $4,500 to $9,000. Both are real. Neither is a national average worth planning around, which is the mistake almost every cost guide on this subject makes.
Here is roughly how a mid-to-high-cost-market quote breaks down, so you can see which lines your own job actually triggers.
| Line item | Typical range | When it applies |
|---|---|---|
| Demolition and disposal | $400 – $1,200 | Always; dump fees drive the spread |
| New unit or insert | $700 – $2,800 | Economy one-piece at the low end, multi-piece acrylic at the high |
| Wall prep and shimming | $300 – $900 | Always; more if the studs are out of plane |
| Plumbing reconnection | $400 – $1,100 | Always; more if the valve is being replaced |
| Installation labor | $400 – $1,000 | Always |
| Caulking and sealing | $150 – $500 | Always |
| Fixture upgrades | $250 – $700 | Optional |
| Permit | $50 – $400 | Usually only if plumbing moves |
- A one-piece unit almost never comes back out through the bathroom door. It gets cut into sections with a reciprocating saw, which is why demolition is a four-figure line and not a hundred-dollar one.
- If your unit is one piece and the bathroom was framed around it, the replacement is usually a three-piece or multi-piece kit rather than another monolithic unit, because a new one-piece will not fit through the opening either.
- A straight insert swap in the same footprint usually needs no permit. Moving the drain or the valve does, and that also adds a day.
- Budget for drywall and paint at the perimeter. It is a small number that is left off nearly every quote and it is not optional once the old unit is out.
Which route your shower is actually eligible for
This is a structural question, not a preference. Refinishing and lining both add a few millimeters to a surface that has to carry your weight and shed water; neither one repairs what is under it. Do the following before you take a quote seriously.
- Stand in the pan and shift your weight. Any flex, creak, or give means the substrate under the floor has failed or was never supported. Refinishing over that is money set on fire, and lining over it hides it. Replace.
- Press the walls firmly, especially at the lower corners and around the valve. Soft or spongy means water is already behind the unit.
- Look at cracks under a bright light. Fine crazing in the gel coat is cosmetic and refinishes fine. A crack you can catch a fingernail in goes through the laminate and will telegraph back through any coating within a year.
- Smell the overflow and the drain area. A persistent musty smell after the shower has been dry for a day is water in the wall cavity, and no surface product fixes it.
- Check the age of the caulk line at the floor. If it has been recaulked repeatedly over previous caulk, the joint has been moving, which is a flex problem, not a sealant problem.
The regulation that changed who does this work, and how
Bathtub and shower refinishing has an unusually serious safety history for a cosmetic trade, and it is worth understanding because it affects what a legitimate contractor will and will not do in your bathroom. The stripping agents historically used to take an old coating off contained methylene chloride, and the EPA states that at least 88 people have died from acute methylene chloride exposure since 1980, largely workers doing bathtub refinishing or other paint stripping, in some cases while trained and wearing protective equipment. A small, unventilated bathroom is close to a worst-case exposure environment for a heavy vapor.
Regulation has caught up with that. EPA prohibited methylene chloride for consumer paint and coating removal from November 22, 2019, so you cannot legally buy a consumer stripper containing it. In April 2024 the agency finalized a broader TSCA risk management rule phasing out most remaining commercial and industrial uses, with a workplace chemical protection program for the narrow uses that continue. EPA has since extended some of those compliance dates, most recently in November 2025, and further adjustments were on the agency’s 2026 agenda, so the precise deadline applying to a given commercial use has moved more than once.
The practical version for a homeowner: ask any refinisher what they strip and etch with, and how they ventilate. A contractor who answers with a product name, a ventilation plan, and a respirator standard is a professional. One who is vague about it, or who is still using a methylene chloride stripper in a room with a closed door, is a liability in your house regardless of what they charge.
Doing the reglaze yourself
This is one of the few jobs on this site where the DIY route is genuinely reasonable rather than a false economy. A two-part epoxy tub and tile kit costs a fraction of the professional quote, and on a sound fiberglass shower with careful prep the result is close. The tradeoff is honest: expect three to seven years rather than eight to fifteen, because you are rolling or brushing a thinner film than a professional sprays, and because a shop with an HVLP gun gets a more even build than anyone gets by hand.
The whole job is prep. Clean with a degreaser and then an abrasive cleaner, wet-sand the entire surface with 400 to 600 grit until the gloss is completely dead — that mechanical tooth is the only thing the epoxy grips — rinse, dry fully, mask everything you are not coating, and only then mix. Two-part epoxy has a pot life measured in hours, so mix once you are genuinely ready. Give it three full days to cure before any water touches it; this is the step people rush and it is the step that decides whether the finish lasts.
Ventilation is not optional. The solvent load in these kits is significant in a room the size of a bathroom. Open a window, run a fan pulling air out rather than blowing it around, and wear a respirator with organic vapor cartridges — a dust mask does nothing against solvent vapor.
If You’re Reglazing It Yourself
A short list of what the job actually needs, in the order you use it.
- Rust-Oleum Tub & Tile Refinishing 2-Part Kit, Gloss White — The two-part epoxy kit most DIY refinishing writeups are built around, rated by the manufacturer for porcelain, ceramic and fiberglass. One quart covers a standard tub or a small stall; a full tub-and-surround needs two. Buy the extra kit before you start rather than halfway through, because a second batch mixed a day later will not blend invisibly into the first.
- Wet/dry sandpaper, 400 to 600 grit — The etch is the entire job. Buy more than you think you need — a full shower surround eats through sheets fast, and sanding with a loaded, glazed sheet feels like progress while achieving nothing.
- 3M P95 / Organic Vapor Reusable Respirator 6311 — NIOSH-approved with organic vapor cartridges, which is the specification that matters here. Particulate masks and cloth masks are useless against solvent vapor. Given this trade’s exposure history, this is the one item on the list not to improvise.
- 100% silicone caulk for the perimeter — Recaulk the floor and wall joints after the coating has fully cured, not before. Use pure silicone rather than a siliconized acrylic; the acrylic ones are easier to tool and fail sooner in a wet joint.
Stop and call a professional if the pan flexes underfoot, if any wall feels soft, or if a crack goes through the laminate rather than sitting in the gel coat. Those are substrate failures, and a coating over a substrate failure buys you months, not years, while making the eventual replacement no cheaper.
The decision on a dated fiberglass shower is usually simpler than the quotes make it look. If the unit is structurally sound and you just dislike how it looks, reglazing at $400 to $1,100 professionally — or a kit and a careful weekend yourself — is the correct answer, and everything above that price is buying you finish quality and warranty length rather than fixing a problem. If the pan gives underfoot or a wall is soft, no surface product is honest and you are choosing between a liner that hides it and a replacement that fixes it. Spend the ten minutes on the eligibility checks above before you take a single quote, because that is what decides your number, not the market.
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