Whether you're replacing a worn shower enclosure or adding a shower to a newly finished bathroom, the plumbing behind the wall matters just as much as the fixtures you see. In many Scarborough bungalows and back-splits, original shower valves and drain lines date back to the home's construction, and swapping in a modern shower often means updating the valve, supply lines, and sometimes the drain to match current fixtures.
We install a range of shower setups, from simple valve and showerhead replacements to full enclosures with new drain lines, and we pay close attention to matching new fittings with the existing wall and floor structure so the finished shower functions properly and doesn't leak into the surrounding walls or subfloor.
Signs You Need Shower Installation
Signs your shower may need a plumbing update or full installation:
Inconsistent water temperature
An old or worn shower valve can struggle to maintain steady temperature, especially when other fixtures are used at the same time.
Low water pressure at the showerhead
Mineral buildup or a failing valve can restrict flow, even if pressure elsewhere in the house is normal.
Visible leaks around the shower base
Water escaping around the base or behind the wall often points to a failing drain connection or cracked pan.
Outdated fixtures during a renovation
A bathroom renovation is a natural point to upgrade shower valves and drains to current standards.
Adding a shower where none existed
New shower installations in basement bathrooms or converted spaces require new supply, drain, and vent connections.
How We Do It
Our process for installing or replacing a shower:
Step 1: Assessing the space and existing plumbing
We check the condition of existing supply lines, drain connections, and wall framing before planning the installation.
Step 2: Installing or updating the valve
We install a new shower valve sized and positioned correctly, connecting it to hot and cold supply lines behind the wall.
Step 3: Running or connecting drain lines
For new installations, we run drain piping to the shower base location and tie it into the existing branch line with proper slope.
Step 4: Setting the shower base or pan
We install and level the shower base or pan, sealing edges to prevent water from reaching the subfloor.
Step 5: Connecting the showerhead and trim
Once the valve and base are set, we install the showerhead, trim kit, and any diverter for tub-shower combinations.
Step 6: Testing pressure and drainage
We run the shower through a full cycle to check temperature control, pressure, and that the drain clears properly.
Shower installations across Scarborough homes
Many original bathrooms in Scarborough's post-war housing, particularly in Malvern and Woburn, still have the shower valves and drain configurations installed when the homes were built. When replacing these, we often find the new fixtures require slightly different rough-in spacing, which we account for during installation to avoid gaps or misalignment in the wall.
For basement bathrooms, a shower installation typically ties into the same ejector system used for the toilet and sink, and we plan drain slope and pump capacity accordingly so the whole bathroom drains reliably.
Why Choose Scarborough Plumbing
Attention to hidden plumbing
We check supply and drain lines behind the wall, not just the visible fixtures, before starting a shower installation.
Experience with older valve types
We're familiar with the range of shower valves found in Scarborough homes built across different decades.
Careful sealing and leveling
We take the time to properly seal and level the shower base to prevent leaks into the subfloor or surrounding walls.
Support for basement additions
We regularly install showers as part of new basement bathrooms, connecting them properly to ejector systems where needed.
Shower Installation FAQs
Can you replace just the shower valve without redoing the whole shower?
In many cases, yes, especially if the surrounding tile and base are in good condition and only the valve needs updating.
Do you install shower bases in basement bathrooms?
Yes, including bases connected to a sewage ejector system where the basement sits below the main sewer line.
How do you prevent leaks around the shower base?
We carefully seal and level the base during installation and check drain connections thoroughly before considering the job finished.
Can you match a new shower valve to my existing plumbing?
Yes, we assess the existing supply lines and select a valve that connects properly, adjusting rough-in spacing where needed.
How long does a shower installation take?
It depends on whether it's a valve replacement or a full new installation with drain and base work, so we give a clearer estimate after seeing the space.
Related Services
Questions? Call (647) 249-7335 or send the form below.