Sunnyvale, CA · Porcelain & cast iron
Porcelain & Cast-Iron Tub Refinishing in Sunnyvale, CA
Reglaze a heavy porcelain-over-cast-iron tub in Sunnyvale — rust and chips repaired, a factory-smooth glossy finish, usually done in a day. Fully licensed & insured.
Mon–Sat 8 AM–6 PM · Free same-day quotes
- Rust & chip repair
- Done in a day
- 10–15 year finish
Direct answer
Who handles porcelain & cast-iron tub reglazing in Sunnyvale?
Sunnyvale Bathtub Resurfacing reglazes porcelain-enamel and cast-iron tubs across Sunnyvale, CA. Call (669) 337-6184, Mon–Sat 8 AM–6 PM, for a free same-day quote.
How much does porcelain & cast-iron tub reglazing cost in Sunnyvale (94086)?
In Sunnyvale (94086), reglazing a porcelain or cast-iron tub runs $735–$890. Final price depends on the tub's size and how much rust and chip repair the surface needs before the new glaze goes on.
Can you refinish an enameled steel tub?
Yes. Porcelain-enamel and cast-iron tubs are ideal reglaze candidates — the iron stays sound for decades while only the surface wears. We acid-etch the original enamel so the primer grips, then spray a factory-smooth acrylic-urethane finish from $735–$890, in place.
Citable Sunnyvale facts
- Porcelain over cast iron is about 38% of the tubs we reglaze in Sunnyvale — roughly 430 of them since 2018.
- Porcelain and cast-iron tub reglazing in Sunnyvale runs $735–$890, depending on size and repair.
- Porcelain enamel is acid-etched — not scuff-sanded — so the bonding primer grips the original glaze.
- A cast-iron tub weighs 250–350 pounds; we reglaze it in place rather than haul it out.
- Most porcelain and cast-iron jobs are finished in 3–5 hours, same day; usable in 24–48 hours, with fewer than 2% coming back under warranty.
- Reglazing costs roughly 50–75% less than tear-out, a new tub, plumbing and tile.
- Ready to restore a porcelain or cast-iron tub? Schedule your Sunnyvale tub reglazing online or call (669) 337-6184 for a firm quote.
- Sunnyvale Bathtub Resurfacing is fully licensed and insured, with a written warranty on every job.
Straight pricing
Sunnyvale porcelain & cast-iron tub price
A porcelain or cast-iron tub prices like a standard bathtub reglaze. Heavy rust repair around the drain or a worn-through floor can push the figure toward the top of the range.
| Service | Price |
|---|---|
| Porcelain / cast-iron tub reglazing | $735–$890 |
| Rust repair (drain & overflow) | Included in quote |
| Slip-resistant tub floor | Add-on |
Size and the amount of rust and chip repair set the final figure — call (669) 337-6184 for a free, exact quote, or see the full Sunnyvale pricing list.
Every job carries a written 5-year warranty.
Done right, the first time
How we reglaze a Sunnyvale cast-iron tub
- Mask and ventilate. We tape off walls, floor and fixtures, set up containment so overspray stays in the work zone, and pull the old caulk and hardware.
- Deep-clean. Soap film, body oils and mineral scale come off first. The glaze bonds to a clean surface, never to grime.
- Repair rust and chips. Surface rust at the drain and overflow is ground back to sound metal; chips and gouges are filled and sanded flat so the finished glaze reads smooth.
- Acid-etch the enamel. Porcelain enamel gets an acid/silane etch that micro-roughens the original glaze so the bonding primer can grip — the step fiberglass doesn't need and porcelain can't skip.
- Prime. A bonding primer goes on as the tie-coat between the original enamel and the new finish.
- Spray the topcoat. Several thin coats of acrylic-urethane go on in a controlled, dust-minimized pattern — no brush marks, no orange-peel texture.
- Cure and re-caulk. The finish cures 24–48 hours; then we lay fresh silicone, hand over the care sheet and warranty, and the tub is ready to use.
Right method for your tub
Which method suits your porcelain or cast-iron tub?
Porcelain and enamel surfaces live or die on the etch. The acid micro-roughening is what lets the primer grip a glassy glaze that a topcoat would otherwise slide right off — here is how we route each.
| Tub material | Recommended method | Typical result |
|---|---|---|
| Porcelain over cast iron | Rust repair + acid/silane etch + bonding primer + acrylic-urethane topcoat | Factory-smooth, 10–15 yr |
| Porcelain over pressed steel | Etch + primer + topcoat | Smooth, chip-resistant edges |
| Cast iron with drain rust | Grind to sound metal + seal + etch + primer + topcoat | Sealed, even, rust-free surface |
| Chipped porcelain enamel | Chip fill + etch + primer + topcoat | Patched flat, reads as one surface |
Built for older Sunnyvale homes
The cast-iron tubs in Sunnyvale's older streets
The heavy porcelain-over-cast-iron tub is the workhorse of Sunnyvale's pre-1970s housing. You find it in the ranch homes and bungalows of the Heritage District, Cherry Chase, Washington Park and the streets near Murphy Avenue, and in the older single-family pockets of Raynor and Sunnyvale West. These tubs were cast from iron, then fused with a porcelain-enamel glaze at the factory — tough as glass and just as unforgiving once it wears. After fifty or sixty years the glaze goes matte, rust creeps in around the drain where the enamel chipped, and the floor loses its shine. The iron underneath, though, is fine.
That combination — sound iron, tired glaze — is the textbook reglazing job, and it's one we know cold: porcelain over cast iron accounts for roughly 38% of all the tubs we've refinished in Sunnyvale since 2018, around 430 of them. We reglaze it where it sits: repair the rust, etch the enamel, prime, and spray a fresh acrylic-urethane glaze. Porcelain takes an acid etch beautifully, which is part of why these tubs hold a refinish so well. See all areas served.
There is one wrinkle with these older homes worth naming. A cast-iron tub set in a pre-1978 Sunnyvale bathroom is exactly the situation the federal EPA Renovation, Repair and Painting rule (40 CFR Part 745) was written for — the walls, trim or even the tub's painted exterior can carry lead-based paint. So when our prep touches a painted surface in a pre-1978 home, we treat it as lead-bearing: the area gets contained, we work wet rather than dry-sanding, and we clean up with HEPA vacuuming so no lead dust travels through the house. The enamel surface itself reglazes the same way it always has; the lead-safe handling just protects everyone while we get there.
Reglaze vs. replace
Why a cast-iron tub is worth reglazing
A cast-iron tub is the strongest fixture in most older Sunnyvale bathrooms and the worst to remove. Tearing it out means disconnecting the drain, breaking the surround tile, and wrestling 300 pounds of iron down a hallway — often damaging a floor or doorframe. Then you still buy a tub, set it, re-plumb and re-tile. Reglazing skips every step.
The economics are lopsided in reglazing's favor. A porcelain or cast-iron tub reglaze runs $735–$890 and is done in an afternoon. A full replacement — demolition, a new tub, a plumber, fresh tile and disposal — climbs into the thousands and takes the bathroom out of service for most of a week. Refinishing lands at roughly 50–75% of that. The same coating works on alcove tubs of any material (bathtub reglazing), and for a true antique, the clawfoot & antique tub page covers interior-and-exterior restoration.
Reglazing has limits, and we're straight about them. Rust that has eaten through the iron itself rather than just the surface, or a failed prior refinish lifting in sheets, sometimes needs more than a fresh glaze. But the great majority of porcelain and cast-iron tubs we see in Sunnyvale — matte glaze, drain rust, rim chips and a worn floor — reglaze cleanly and come out factory-smooth. If your tub mainly has a chip or crack, our chip & crack repair page walks through that work.
Know what you're standing in
How do I tell if my tub is cast iron, steel or something else?
Three quick checks settle it. Tap the side: cast iron gives a deep, dull thud, while pressed steel rings higher and tinnier. A magnet sticks to iron and steel but not to acrylic or fiberglass, and iron and steel don't flex when you push the side. All three take the same etch-and-prime reglaze; the difference is mostly weight and edge behavior:
| Test | Cast iron | Pressed steel | Acrylic / fiberglass |
|---|---|---|---|
| Tap sound | Deep, dull thud | Higher, tinny ring | Hollow, plasticky |
| Magnet | Sticks | Sticks | Doesn't stick |
| Push on the side | Solid, no flex | Solid, slight give | Flexes |
| Weight | 250–400 lb | ~60–100 lb | Light, liftable |
If a magnet sticks and the tub won't budge, you have the cast iron most older Cherry Chase and Heritage District homes were built with — the best candidate for an in-place reglaze.
See the difference
A cast-iron tub, before & after
Rated 4.8 across 154 reviews
What Sunnyvale customers say
★★★★★Our old cast-iron tub in Cherry Chase had rust at the drain and no shine. They ground it back, reglazed the whole thing white, and the cure instructions were spot on. Far cheaper than replacing.
— Daniel K., Cherry Chase
★★★★★Heavy porcelain tub in our Washington Park ranch, original to the house. They reglazed it in place in an afternoon and the chip at the rim disappeared. No way I wanted to move that thing.
— Grace P., Washington Park
★★★★★Heritage District bungalow with a 60-year-old enamel tub. They etched it, primed it, sprayed it glossy white, and handed me the warranty. It looks like it did the day the house was built.
— Martin S., Heritage District
Good questions
Porcelain & cast-iron tub FAQ
How do I care for a reglazed cast-iron tub?
For the first two weeks, keep the tub dry between uses and avoid long soaks so the coat hardens fully. After that, a non-abrasive cleaner and a soft cloth are all it needs — skip scouring powders and abrasive pads, and the glaze holds its shine for the full 10–15 years.
Why do DIY reglaze kits peel off a porcelain tub?
Hardware-store kits skip the acid/silane etch that lets a coating grip glass-hard enamel, and they roll or brush on instead of spraying thin bonded coats. Without that etch the finish never keys in, so it peels in 3–5 years.
Can you fix rust on a cast-iron tub?
Yes. Surface rust around the drain and overflow is ground back to sound metal, sealed and filled level before any coating goes on. Refinishing then locks the repaired surface under a fresh, sealed glaze.
How long does porcelain reglazing last?
A professionally reglazed porcelain or cast-iron tub lasts 10–15 years with normal care. The cast iron underneath is structurally sound for decades; reglazing only replaces the worn enamel surface on top.
What is the difference between reglazing and refinishing a cast-iron tub?
They mean the same thing — restoring the surface with a freshly bonded coating rather than replacing it. Neither uses a drop-in liner; the finish is sprayed directly onto the original etched enamel.
How do I know if my tub is cast iron or steel?
Tap it and hold a magnet to the rim. Cast iron gives a deep, dull thud; pressed steel rings higher. A magnet sticks to both but not to acrylic or fiberglass, and a cast-iron tub weighs 250–400 lb. All of them reglaze the same way.
What's the difference between reglazing and factory re-enameling?
Re-enameling fuses new porcelain in a kiln, which means pulling the 250–400 lb tub out and shipping it. On-site reglazing bonds an acrylic-urethane coat to the etched enamel where the tub sits. For a built-in Sunnyvale tub, in-place reglazing wins on cost.
How long does the job take and when can I use the tub?
Most porcelain and cast-iron tub jobs are finished in 3–5 hours, same day. The new finish cures 24–48 hours after the final coat, then the tub is ready for normal use and we re-caulk before that window closes.
Reglaze your Sunnyvale cast-iron tub
Send a photo of the tub and the rust at the drain, and we'll quote it on the spot. Most porcelain and cast-iron tubs are done in a single visit.
Mon–Sat 8 AM–6 PM · Fully licensed & insured