How much does a walk-in shower cost in Montreal? Price and technical requirements
The price of a walk-in shower in Montreal depends less on its appearance than on what needs to be modified under the covering: floor level, drainage, plumbing, waterproofing and bathroom configuration.
A glass shower with an extra-flat shower tray may seem similar to a completely barrier-free shower. However, the necessary work—and therefore the budget—can be very different.
Here are the main things to know before planning your project.
Walk-in shower, threshold-free shower, or extra-flat shower tray: what's the difference?
These terms are often used as synonyms, but they do not always refer to the same installation.
A walk-in shower is generally custom-designed. The shower floor is tiled and sloped towards the drain. It may include a fixed glass panel, a central or linear drain, a wall niche, or a built-in bench.
A walk-in or threshold- free shower creates a seamless transition between the bathroom floor and the shower. It often requires modifying the floor structure or level to create the necessary slope for water drainage.
An extra-flat shower tray is a very thin, prefabricated shower base. It allows for easier access than a traditional shower tray, but sometimes retains a slight lip. It can be an excellent solution when full recessing is not technically possible or would involve disproportionate work.
The right choice therefore depends on the desired result, but also on the invisible constraints of the construction site.
What budget should I plan for a walk-in shower in Montreal?
The cost increases rapidly when the project involves relocating plumbing, reworking the subfloor, creating a custom slope, or modifying existing elements.
In a complete bathroom renovation, the shower represents only one part of the overall budget. The vanity, flooring, lighting, ventilation, toilet, wall coverings, and finishing work must therefore be evaluated together.
Can the type of flooring affect the price?
Yes. This is often one of the factors that determines whether a completely threshold-free shower is easily achievable or not.
Wooden floor
In a house, a wood-framed floor may require checking the available height between the joists and the drainage system. To embed the drain and create a sufficient slope, it may be necessary to modify part of the subfloor or alter the shower layout.
The condition of the existing floor also matters. A structure weakened by a previous leak, a damaged subfloor, or a significant unevenness may require additional work before the waterproofing membrane and ceramic tiles can be installed.
Concrete slab
In a condo or apartment building, the shower often rests on a concrete slab. Modifying the drain height or creating a recess can then be more complex.
It is not always possible to dig or modify the slab. Depending on the configuration, the solution may involve creating a slight rise, using an extra-flat shower tray, or maintaining a minimal threshold.
An elegant and easily accessible shower is still possible, but the project must be adapted to what the structure actually allows.
Linear drain, central drain and plumbing: what influences the cost
The drain is a discreet element, but it plays a major role in the design and budget of a shower.
A central drain is often easier to integrate into a tiled shower. The slope of the floor then converges towards a central point.
A linear drain can be installed against a wall or near the shower entrance. It creates a uniform slope in one direction and integrates well into contemporary designs. However, it does represent an additional cost in terms of materials and labor.
The budget can also change when:
the existing drain needs to be moved;
the supply lines must be redone;
the tap fittings pass from one wall to another;
a built-in shower column is added;
the old plumbing needs to be replaced;
Access to the pipes is difficult.
Keeping the existing locations of the bathtub, shower and faucets often allows for better budget control.
Waterproofing, slope and ceramics: elements not to be underestimated
A walk-in shower relies on a precise technical assembly. The visible tiles alone are not what makes the shower waterproof.
Under the coating, a complete system must be installed, including in particular:
a stable floor preparation;
a slope allowing the water to reach the drain;
a continuous sealing membrane;
watertight fittings around the drain;
the treatment of corners, walls and plumbing penetrations;
joints and finishes suitable for a humid environment.
The quality of this preparation is essential. Insufficient slope can lead to stagnant water. A poorly connected membrane can cause leaks behind walls or under the floor.
The size of the ceramic tiles also affects the cost. Large tiles offer a clean, minimalist look but require a very even surface and precise cuts. Mosaic tiles adapt easily to complex slopes, but their installation requires more grout and labor.
What are the specific constraints in a condo?
In a condo, renovating a shower generally requires compliance with condominium rules in addition to the building's technical constraints.
Before starting the work, it is important to check:
the authorizations requested by the condominium association;
construction time slots;
the rules for accessing the elevator and common areas;
insurance requirements;
documents to be provided before work begins;
restrictions related to plumbing or the concrete slab.
A drain modification, a major plumbing overhaul, or a risk of seepage to the lower unit requires particularly rigorous planning.
The cost of a shower project in a condo can therefore be higher, not only because of the structure, but also because of the logistics of the construction site and the protections to be put in place.
Replacing a bathtub with a shower: what budget should you plan for?
Replacing a bathtub with a shower is one of the most common bathroom renovation projects.
It can allow you to:
modernize an aging bathroom;
improve access to the shower;
visually free up space;
plan a bathroom better suited to evolving needs;
incorporate a glass wall, a niche or a bench.
The budget depends mainly on the solution chosen.
An extra-flat shower base, prefabricated walls, and existing fixtures are generally the simplest option. Conversely, a custom-tiled shower with a linear drain, a made-to-measure glass screen, a wall niche, and recessed fixtures requires a more extensive renovation.
When the bathtub is removed, the condition of the walls, floor, and plumbing can only be confirmed after demolition. It is therefore wise to allow for contingencies, especially in older homes.
What increases the price of a walk-in shower?
Some choices legitimately increase the cost because they require more preparation, materials, or specialized labor.
The main factors are:
the creation of a completely threshold-free shower;
the relocation of the drain or the tap;
the reworking of the subfloor;
repairing damage caused by moisture;
a complete waterproofing membrane;
a linear drain;
a custom-made glass partition;
built-in or thermostatic taps;
an integrated bench;
a wall niche;
underfloor heating;
large format tiles, natural stone or a complex mosaic;
access and security constraints in a condo.
Conversely, keeping the plumbing in place, choosing standard ceramic and opting for an extra-flat base rather than a full recess can help reduce the complexity of the project.
Is a completely threshold-free shower still possible?
No. The complete absence of a threshold depends on the available height to embed the drain and create the slope towards the outlet.
In certain configurations, particularly on a concrete slab or when the existing drain is difficult to move, creating a shower perfectly level with the rest of the room may require too much work.
A slight increase in height or an extra-flat shower tray may then represent a more realistic solution. The goal is not to impose a standard solution, but to find the best balance between accessibility, safety, aesthetics, and budget.
When a project addresses specific mobility needs, it's also important to consider the entire bathroom: circulation width, non-slip flooring, bench, shower with integrated telephone, and grab bars. Discover our accessibility services as well.
Get your shower project evaluated in Montreal
A reliable estimate requires seeing the existing bathroom, checking the plumbing and flooring, and then defining the desired materials and level of finish.
BonBain Construction carries out walk-in shower, threshold-free shower and bathtub replacement projects in Greater Montreal, including Lachine, LaSalle, Verdun, Laval, Longueuil and Brossard.
To explore design and installation options, visit our Walk-in Shower page. You can also contact us for a personalized quote for your bathroom.
BonBain Construction – Renovating means living better.
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