A bathroom remodel in a 1920s craftsman bungalow in Old Town Mechanicsburg is a different project from the same remodel in a 1990s Hampden Township colonial. The craftsman bungalow has plaster walls, a single full bathroom on the second floor, a cast iron drain stack from the original construction, galvanized or early copper supply lines, and a floor plan that was designed around a bathroom configuration that may bear little resemblance to what the homeowner wants to install. This guide covers what the plumbing scope actually involves in these properties and what to plan for before demolition begins.
What Makes a Craftsman Bungalow Bathroom Remodel Different
The standard two-story craftsman bungalow that makes up a large share of Old Town and North Mechanicsburg's housing stock was built with a single full bath on the second floor and either a half bath or no bathroom at all on the first floor. The second-floor bathroom was positioned over a wet wall, a section of framing that contains the main drain stack running vertically from the attic through the second floor and first floor to the basement building drain below.
Keeping fixtures in the same position relative to the wet wall is the factor that determines whether a craftsman bathroom remodel is straightforward or complex. A remodel that replaces the tub, toilet, and vanity in the same locations using the existing drain stub-outs is a finish plumbing project. A remodel that moves the toilet from one wall to another, adds a shower where there was none, or converts a tub-only alcove to a separate shower and soaking tub requires opening the floor, relocating drain connections, and re-engaging the vent stack.
Vent Stack Routing in a Pre-1940 Plaster Wall Home
Why the Vent Stack Matters
Every drain in a home requires a vent connection to allow air into the drain system as water flows out. Without adequate venting, drains create negative pressure when they empty, which pulls water out of trap seals and allows sewer gas into the living space. In new construction, the vent stack is designed into the floor plan. In a 1920s craftsman bungalow, the vent stack is wherever it was originally put, and every fixture relocation in the bathroom must connect to that stack within the code-allowed distance for the drain pipe diameter.
Adding a new fixture location that is not in vent range of the existing stack requires either extending the vent through the wall to the existing stack, adding a new vent stack (uncommon in a retrofit), or in some configurations using an air admittance valve at the new fixture location where code permits.
Getting to the Attic Space in a Craftsman Home
In a one-and-a-half story craftsman bungalow, which is the most common configuration on the older Old Town Mechanicsburg streets, the attic space above the second floor may be very limited in access and headroom. Running a new vent pipe from the second-floor bathroom through the ceiling and into the attic may require a plumber to work in a very confined space. This is part of the pre-remodel assessment: confirming that the vent routing we need to accomplish is physically possible with the framing and attic configuration in that specific house.
Cast Iron Drain Reconfiguration
The cast iron drain stack in a 1920s Mechanicsburg craftsman bungalow is the vertical backbone of the drain system. Branch connections from the bathroom fixtures connect to this stack through fittings in the stack wall. Moving a toilet from one side of the bathroom to another means cutting the cast iron floor slab connection, repositioning the flange, running a new branch to the stack at the correct entry point, and verifying that the slope and distance to the stack vent connection meet code requirements.
For a bathroom that is simply receiving updated fixtures in the existing positions, the cast iron system is not cut. We reconnect the new fixtures to the existing stub-outs and the existing vent connections. If the cast iron stack itself has significant internal scale, we assess it before closing the walls after the remodel and recommend addressing it while the walls are already open.
Supply Lines in a Craftsman Bathroom Remodel
Many 1920s craftsman bungalows in Old Town Mechanicsburg have original galvanized steel supply lines feeding the bathroom fixtures. If the bathroom remodel is already opening walls and the floor for drain reconfiguration, replacing the supply lines serving the bathroom at the same time is the most practical opportunity to do so without a dedicated repiping project later.
New shower valves and tub faucets require specific supply connections at the valve body. If the existing supply stubs are galvanized and undersized or corroded, connecting new fixture valves to old galvanized supply is a temporary solution that creates a potential failure point shortly after the remodel is complete. We include the supply replacement in the bathroom remodel scope as a standard recommendation when the existing lines are galvanized.
Permits for Bathroom Plumbing Work in Mechanicsburg Borough
Any bathroom remodel in Mechanicsburg Borough that involves moving or adding drain lines, vent connections, or supply lines requires a plumbing permit from the borough and an inspection of the rough-in work before walls are closed. We handle the permit application and schedule the borough inspection as part of the project.
Permitted and inspected rough-in work is a requirement many homeowners overlook until a sale or refinancing surfaces unpermitted renovation work as a problem. For a craftsman bungalow in the historic district of Old Town Mechanicsburg, documented, permitted renovation work is also a selling point rather than a complication.
Related service: Bathroom Plumbing & Remodel › Repiping › Cast Iron Drain Repair ›
Working in an Occupied Craftsman Home During a Bathroom Remodel
('Bathroom plumbing rough-in in an occupied Old Town Mechanicsburg craftsman bungalow requires coordination with the household to manage the period when the existing bathroom is out of service. In a single-bathroom home, which describes most of the one-and-a-half story craftsman bungalows on the older borough streets, the rough-in phase takes the bathroom offline until the new rough-in is complete and tested.', 'We schedule the rough-in work to minimize the offline period, typically completing the drain reconfiguration, vent connections, and supply stub-outs in a single day where the layout change is not extensive. We restore temporary water service to the fixture locations at the end of each day where possible during multi-day projects.', "The Borough of Mechanicsburg plumbing inspection for the rough-in work is typically scheduled within a few days of the rough-in completion. Until the inspection is passed, walls cannot be closed and tile cannot be set. We coordinate the inspection date at the start of the project so that the tile contractor's schedule is planned around the inspection window rather than discovering the timing after demolition has begun. The permit and inspection documentation stays with the home at resale and supports the disclosure of all plumbing modification work.")