Commonwealth Bath Co.
Tub to Shower Conversion in Massachusetts

Rip the tub, build a real shower

Tub to Shower Conversion in Massachusetts

Full tub-to-shower conversions across Massachusetts. We pull the permit, rebuild framing, waterproof with Schluter, tile to ceiling, and hang frameless glass.

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

Real conversions, no 'liner' gimmicks

The tub is out. The framing is right. The waterproofing is permanent.

A proper tub-to-shower conversion is a small remodel, not a cover-up. We don't install 'bath fitters' over existing fiberglass. We gut the tub surround to the studs, evaluate framing, add blocking for valves and glass, waterproof with Schluter, build a proper shower pan, and tile from floor to ceiling.

Most Massachusetts tub-to-shower conversions involve pulling a 70-pound cast iron tub, rerouting the drain and overflow, adjusting stud spacing for a modern valve, and sometimes sistering joists because the old tub mass hid deflection. These are the steps a legitimate conversion includes.

Massachusetts requires a permit for this work because it's plumbing and structural. We pull it, schedule the inspection, and hand you a clean paper trail. You'll own a properly permitted bathroom worth more at resale.

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.

Tub to Shower Conversion in Massachusetts

What's included

Every tub to shower project includes:

  • Permit pulled (your city or town)
  • Cast iron or steel tub removal + haul-off
  • Framing inspection and repair
  • New valve location blocking
  • Drain rerouting as needed (PVC)
  • Schluter pan or depressed subfloor (curbless option)
  • Schluter Kerdi or Kerdi-Board waterproofing
  • Linear drain or center drain
  • Niche with Schluter waterproofing
  • Large-format porcelain or custom tile
  • New valve, showerhead, handheld install
  • Frameless tempered glass enclosure

Our Process

How the project actually runs.

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

01

Scope + quote

We walk the bathroom, measure, identify the tub drain, assess framing access, quote firmly. Permit plan discussed.

02

Demo + framing

Pull the tub, strip to studs, inspect framing. Add valve blocking, glass blocking, drain reroute if needed. Plumbing rough.

03

Waterproof + tile

Schluter pan set, Kerdi on walls, pre-formed corners. Tile dry-fit, install, grout. Schluter-Jolly edges at terminations.

04

Glass + punch

Glass templated on cured tile. Valve trim, rainhead, handheld. Final leak test. Grout seal. Walkthrough with you.

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

Schluter Kerdi-Board

The go-to for tub-to-shower conversions. Waterproof and substrate in one panel. Handles framing out of plumb common in older Massachusetts baths.

Schluter Kerdi-Shower-ST pan

Pre-sloped foam pan with integrated drain flange. Replaces old-school mud-set tub framing.

PVC drain reroute

Tub drains are 1.5-inch. Shower drains need 2-inch. We reroute to modern PVC within code.

Thermostatic valves: Kohler, TOTO, Delta

Pre-set temperature valves prevent scald. Long-term availability of replacement cartridges.

Worth knowing first

Things most contractors won't tell you.

Resale conversation first

If it's your only tub and you have small children or plan to sell in 2–3 years, keep a tub somewhere in the house. We often recommend converting a secondary bath and keeping a tub in the master or hall.

Cast iron is heavy

A 1950s–1970s Massachusetts tub often weighs 350 pounds. We break them into pieces in the room to remove without damaging framing or subfloor. Occasionally we've found framing that couldn't support a new soaking tub anyway — this inspection is part of the demo day.

Valve reposition = cheap upgrade

Most old tub valves sit at 24" high — too low for a proper shower. We move the valve to 48" and add the showerhead rough at 80" while the wall is open. Zero cost to do it now; expensive later.

Permit pays you back at resale

An un-permitted conversion can't be disclosed cleanly when you sell. Appraisers discount non-permitted work. We always pull the permit; the math works.

Live Job Log

Recent Tub to Shower Jobs in Massachusetts

Real tub to shower 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 tub to shower clients.

We converted our tub to a curbless walk-in shower for my mother-in-law. Commonwealth Bath handled the Worcester County permit and everything was inspected clean. Grab bars where we asked, fold-down bench. Worth every dollar.

Tom D.

Framingham, MA · Tub to Shower

Tub to shower conversion in Lexington: permit pulled, framing rebuilt, Schluter Kerdi-Board, handheld + rainhead, bench seat.

Susan F.

Lexington, MA · Tub to Shower

Pulled the cast iron tub in our 1960s Worcester colonial. Rebuilt the framing, Kerdi-Line drain, large format porcelain. Beautiful and bulletproof.

Chris N.

Worcester, MA · Tub to Shower

Questions

Most-asked about tub to shower.

Typically 10–14 days of construction plus a 7–14 day wait for frameless glass. Budget 3 weeks total before the shower is fully usable.

Yes, in both Massachusetts. It involves plumbing relocation and waterproofing work that inspectors want documented. We handle the permit and inspection.

Sometimes. We need a framed subfloor with joist access below (basement or crawlspace) to lower the drain. Slab-on-grade ranches usually need a small threshold or trench drain design.

We break it up in the room (controlled), wrap, and haul off. Sometimes we donate serviceable vintage tubs to architectural salvage.

No. A liner is a fiberglass-over-fiberglass cover. It leaves the waterproofing intact (often failing), and can trap moisture. We don't install liners. We rebuild properly.

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.