Commonwealth Bath Co.
Bathtub Replacement in Massachusetts

Out with the cast iron

Bathtub Replacement in Massachusetts

Replace a cracked, stained or dated tub with a proper soaking or alcove tub — and waterproof what sits behind it while the wall is open.

Licensed Massachusetts NKBA Certified 4.9★ / 214+ Mon–Fri 7–6, Sat 8–2

Get Your Free Bathroom Estimate

On-site quote, firm number, no high-pressure sales. Response within 1 business day.

No spam. No high pressure. We call once, answer your questions, schedule the on-site if you want.

Licensed & Insured

MA Home & MA

NKBA Certified

Certified Bath Designer

4.9 / 5.0

214+ reviews

1180+ Bathrooms

Since 2013

Out with the cast iron

Replacing the tub is the easy half. What is behind it is the real job.

Most tubs we pull out are not failing because of the tub. They are failing because water has been getting past the surround for years. Replacing the fixture without addressing the wall behind it just resets the clock on the same leak.

A Massachusetts bathtub replacement usually means removing a cast-iron tub that weighs upward of 300 pounds, checking the joists and subfloor underneath it, replacing the valve while the wall is open, and rebuilding the surround with a real waterproofing system rather than green board and hope.

We quote the tub, the surround, the valve and any framing repair as one number after seeing the room. If the subfloor is sound we say so. If it is not, you find out before demo day rather than during it.

See all of our Massachusetts bathroom renovation services — from full gut remodels to accessible baths, tub-to-shower conversions, and master suite builds across Massachusetts.

Bathtub Replacement in Massachusetts

What's included

Every bathtub replacement project includes:

  • Old tub removal and haul-off
  • Joist and subfloor inspection
  • Framing repair where needed
  • New alcove, soaking or drop-in tub set
  • Drain and overflow replacement
  • New tub-and-shower valve
  • Schluter Kerdi or Kerdi-Board surround
  • Tiled surround to ceiling
  • Schluter edge profiles at terminations
  • Caulk and grout seal
  • Debris haul-off and site cleanup
  • Permit filing where plumbing moves

Our Process

How the project actually runs.

No mystery. No surprise delays. Here's the exact sequence.

01

Walk and quote

We look at the existing tub, the access, the valve and what the floor feels like underfoot. Firm itemized quote follows.

02

Demo and inspect

Tub out, surround stripped to studs. Joists and subfloor checked. Any rot or deflection addressed now.

03

Set and rough

New tub set level and supported, drain and overflow tied in, new valve roughed at the right height.

04

Waterproof and tile

Kerdi over the surround, tile dry-fit then set, profiles at edges, grout and seal. Final leak test.

Materials We Trust

The brands and systems we spec.

We only install systems we can stand behind for twenty years. No brand bait-and-switch mid-job.

Premium bathroom materials

Alcove soaking tubs

Deeper than a standard tub at the same footprint. The usual pick when the alcove is staying put.

Cast iron vs acrylic

Cast iron holds heat and lasts decades but needs solid framing. Acrylic is lighter and easier on an upper floor.

Schluter Kerdi-Board surround

Waterproofing and substrate in one panel. Tolerates the out-of-plumb framing common in older Massachusetts homes.

Pressure-balance valves

Prevents scald when another fixture runs. Standard on every replacement we do.

Worth knowing first

Things most contractors won't tell you.

Upstairs tubs need a weight check

A full cast-iron tub on a second floor is a real load. We check joist span and condition before specifying one.

Keep at least one tub in the house

If this is your only tub and you may sell within a few years, replacing rather than converting is usually the right call.

Valve height is a free upgrade

While the wall is open, moving the valve and adding a shower rough costs almost nothing. Doing it later costs a wall.

Old drains are 1.5 inch

Tub drains are smaller than shower drains. If you later convert to a shower, that line needs upsizing.

Live Job Log

Recent Bathtub Replacement Jobs in Massachusetts

Real bathtub replacement projects finished in Massachusetts over the last few months.

Full Bathroom Remodel

Full Bathroom Remodel

Full gut remodel in a 1926 Worcester two-family: cast-iron waste replaced with PVC, PEX supply, Schluter Kerdi shower, 12x24 porcelain floor. Lead-safe containment throughout.

Worcester Jul 2026
Tub to Shower Conversion

Tub to Shower Conversion

Tub-to-shower conversion in a Boston triple-decker: pulled cast-iron tub down three flights, rebuilt framing, Kerdi-Line linear drain, frameless glass.

Boston Jul 2026
Walk-In Shower Installation

Walk-In Shower Installation

Curbless walk-in shower in a Chelmsford ranch: zero-threshold pan, Kerdi-Board walls, bench seat, thermostatic valve, grab-bar blocking added.

Chelmsford Jul 2026
Master Bathroom Renovation

Master Bathroom Renovation

Master bath remodel in a Lexington colonial: relocated supply for a freestanding tub, double quartz vanity, heated Ditra floor, Wellesley-style wainscot.

Lexington Jul 2026
Full Bathroom Remodel

Full Bathroom Remodel

Hall bath gut in a Plymouth cape: rotted subfloor replaced, new rough-in, 24x48 large-format walls, building and plumbing permits pulled.

Plymouth Jun 2026
Accessible Bathroom Remodel

Accessible Bathroom Remodel

Accessible bath conversion in Andover: 36-inch doorway widened, curbless shower, fold-down bench, ADA grab bars, comfort-height toilet.

Andover Jun 2026
Shower Replacement

Shower Replacement

Shower replacement in a Springfield two-family: failed mud pan removed, Schluter Kerdi system, subway walls, mosaic floor, new mixing valve.

Springfield Jun 2026
Bathtub Replacement

Bathtub Replacement

Bathtub replacement in a Reading colonial: cast-iron out, new alcove soaking tub, tiled surround, Schluter-Jolly edge profiles.

Reading May 2026

What homeowners say

Reviews from bathtub replacement clients.

Cast iron out, new soaking tub in, and they found a soft subfloor under it that nobody else had mentioned. Fixed it before setting the new one.

Karen L.

Melrose, MA · Bathtub Replacement

Second-floor bath in a 1920s two-family. They checked the joists before recommending acrylic over cast iron. Straight answer, no upsell.

Mike R.

Somerville, MA · Bathtub Replacement

Tub and full tiled surround. The waterproofing behind it is the part I cannot see and the part I actually paid for.

Dana P.

Beverly, MA · Bathtub Replacement

Questions

Most-asked about bathtub replacement.

Two to three weeks for a tub and tiled surround, including cure time before the first shower. A straight swap with no tile work can be shorter.

If the tub goes back in the same place with the same drain, often not. If the drain moves, the valve is replaced or any framing changes, Massachusetts requires a plumbing permit and inspection. We file it.

Rarely, and we will tell you honestly. Pulling a tub almost always damages the bottom courses, and matching decades-old tile is usually impossible.

We break it down in the room under control, wrap it and haul it off. Serviceable vintage tubs sometimes go to architectural salvage.

Yes — see our tub-to-shower conversion page. We will walk you through which makes more sense for your house and your plans.

Ready when you are

Let's start your bathroom.

Free on-site estimate. Firm quote within 48 hours. No high pressure, ever.

1180+

Bathrooms Completed

4.9

214 Google Reviews

1 day

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Licensed & Insured NKBA Certified On-Time Finish

Get Your Free Bathroom Estimate

On-site quote, firm number, no high-pressure sales. Response within 1 business day.

No spam. No high pressure. We call once, answer your questions, schedule the on-site if you want.