What is the minimum size for a walk-in shower?

The minimum size for a walk-in shower is 32" x 32" (approximately 2.7 feet by 2.7 feet) according to the Ontario Building Code, though this creates a very tight space that most homeowners find uncomfortable for daily use.

For practical comfort, most renovation contractors recommend a minimum of 36" x 36" for a walk-in shower, with 42" x 36" being much more comfortable for most adults. The extra space allows for easier movement, reduces water splashing outside the shower area, and provides room for shower accessories like corner shelves or grab bars.

In Ottawa's typical home layouts, we often see homeowners converting standard 60" tub spaces into walk-in showers, which provides excellent dimensions of approximately 60" x 30-32". This gives you plenty of room for a comfortable shower experience while maximizing the existing footprint. When planning accessibility features like grab bars or a shower seat, you'll want even more space - typically 42" x 42" minimum.

The shower entrance width must be at least 22" clear opening according to building code, though 24-26" feels much more comfortable and accommodates accessibility needs better. Consider that glass doors typically reduce the opening by 2-3 inches compared to the rough opening.

Ceiling height requirements in Ottawa call for a minimum 6'8" over the shower area, with most modern installations using standard 8' ceilings. Proper waterproofing and drainage are critical regardless of size - the shower pan must slope toward the drain at 1/4" per foot.

For a comfortable, code-compliant walk-in shower that works for most Ottawa homes, plan for at least 36" x 42" if possible. Want to discuss converting your existing tub space into a walk-in shower? We offer free consultations to help you maximize your bathroom's potential.

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