National baseline
The NBC specifies barrier-free shower dimensions, grab bars, controls, and threshold requirements in the accessibility provisions.
Canadian building code question
What are the building code requirements for barrier-free showers in Canada?
Barrier-free showers must meet specific dimensional, threshold, grab bar, control placement, and floor slope requirements that depend on the building occupancy and whether the shower is in a required barrier-free washroom or an accessible dwelling unit.
Barrier-free shower design involves more than just size — threshold height, grab bar placement, control location, seat dimensions, and floor slope all have specific code requirements. When a barrier-free shower is required depends on the building's occupancy and how many accessible units or washrooms the code demands. The requirements can also vary between commercial washrooms and residential dwelling units.
What to check first
- Barrier-free showers have specific minimum dimensions, typically requiring a roll-in design with no threshold or a very low threshold.
- Grab bar placement, shower controls, and seat requirements are all specified in the code.
- When a barrier-free shower is required depends on occupancy — hotels, care facilities, and accessible dwelling units each have different triggers.
Jurisdiction notes
Provincial adoption
Some provinces have enhanced accessibility standards that go beyond the NBC minimums for shower design.
Project variables
Building occupancy, number of accessible units required, and whether the shower is in a public washroom or dwelling unit affect the specific requirements.
Work through it in this order
- Determine whether a barrier-free shower is required based on occupancy and unit count.
- Check dimensional requirements including minimum size and roll-in clearance.
- Verify grab bar placement, control height, seat dimensions, and threshold requirements.
- Confirm provincial adoption and any enhanced accessibility standards.
Common questions
What size must a barrier-free shower be?
The minimum dimensions depend on the code edition and whether the shower is a transfer type or roll-in type, but roll-in showers are generally larger.
Is a shower seat required in a barrier-free shower?
A folding or fixed seat is typically required, with specific dimension and mounting height requirements.
Can a barrier-free shower have a curb?
Barrier-free showers typically require a flush threshold or very low curb to allow wheelchair access — a standard shower curb does not meet the requirement.