A Newton Project: Two Bathrooms, One New Floor Plan
Rebuilding two bathrooms at once is a different kind of project from refreshing one. In this Newton job, both bathrooms were taken down and rebuilt around a new floor plan: walls came down, new framing and new door openings went up, and everything behind the walls — plumbing, electrical, insulation — was redone to match the new layout. Here is what that kind of project actually involves, step by step.
What the Project Included
- Demolition of existing walls, with new framing to the new floor plan and new door openings
- New water supply and drain lines, new shower valves, new toilets
- R-13 insulation in exterior walls and fire block insulation
- Two new walk-in showers, fully waterproofed
- New exhaust fans, switches, outlets, and lighting, plus a dedicated dryer outlet and vent
- Wall and floor tile
- New drywall, new vanities and mirrors
- Paint
Step 1: Demolition and New Framing
Walls that didn’t fit the new plan came down. Then new framing went up to define the new rooms: new wall lines, and new door openings framed where the new layout put the doors. This is the one part of a bathroom project where the floor plan itself gets decided in wood — every fixture, every tile run, and every plumbing line that follows is built off this framing.
Step 2: New Rough Plumbing
With the framing in place, new water supply and drain lines went in for the new fixture positions, along with new shower valves. When the floor plan changes, the plumbing doesn’t get a light touch-up — the runs are new, because the fixtures are standing in different places than before. Rough plumbing is always done before insulation and drywall, while everything is still open and every connection can be checked.
Step 3: Insulation
Before the walls closed, insulation went in: R-13 in the exterior walls, and fire block insulation as part of the scope. Insulation is one of those layers that never shows in the finished bathroom, and it’s exactly why it has to be complete before drywall goes up — there is no fixing it later without opening walls.
Step 4: Two Walk-In Showers, Fully Waterproofed
Both bathrooms got walk-in showers, and both were fully waterproofed before a single tile was set. Waterproofing is the layer the tile depends on: once the tile goes up, the waterproofing is buried for the life of the shower. Doing it as a dedicated, complete step — not as an afterthought squeezed in before tiling — is what keeps a shower from leaking through the layer behind the tile.
Step 5: Electrical — Fans, Switches, Outlets, Lighting
Each bathroom got a new exhaust fan, along with new switches, outlets, and lighting. Bathrooms produce a lot of moisture in a short time, and the fan is what moves it out before it settles into paint, drywall, and trim — so the fan, its switch, and its vent path were all part of the new work, not reused from the old rooms. The scope also included a dedicated outlet and vent for the dryer.
Step 6: Tile, Drywall, Vanities, Mirrors, Paint
With the behind-the-wall work done, the visible layers went up: wall and floor tile in both bathrooms, new drywall, new vanities with mirrors, and paint. Tile and drywall are the finish surfaces, but by this point they were the easy part — every decision that mattered had already been made while the walls were open.
Why Doing Both Bathrooms Together Changes the Plan
Rebuilding two bathrooms to one new floor plan means the behind-the-wall work gets planned as a single system: plumbing runs, vent paths, and electrical are laid out for both rooms at once, in the same open walls, in the same sequence. The order of operations is the same as any bathroom rebuild — framing, rough plumbing and electrical, insulation, waterproofing, then tile and finishes — just carried across two rooms instead of one.
Thinking About Rebuilding Your Bathrooms?
If your bathrooms need more than new fixtures — a new layout, walls moved, plumbing relocated — the first step is a look at what’s actually behind and beneath the existing rooms. We do free on-site estimates: we look at the space, talk through what a rebuild would involve in your home, and put the scope in writing.
No pressure, no sales pitch — just a clear picture of the work. (We’re licensed and insured, proof available on request.) Request a free estimate and we’ll schedule a visit.