
Bathroom Renovation that respects the one room in the house that never dries out
GTA Build renovates bathrooms across the Greater Toronto Area with waterproofing, ventilation and finish selection treated as inseparable, not optional add-ons.
Email Us for a Free EstimateRenovating the room that never gets a break
A bathroom is used daily, exposed to steam and standing water constantly, and expected to look pristine indefinitely, which is a demanding brief for any room in a house. Across the GTA, we renovate bathrooms in everything from 1960s bungalows with original plumbing runs to newer builds where the layout simply doesn't serve the household anymore.
Waterproof membrane systems
Every wet area receives a proper waterproofing membrane before tile is set, addressing the single most common cause of premature bathroom failure.
Ventilation sized to the room
Undersized exhaust fans are common in older GTA homes; we size and route ventilation to actually clear humidity, protecting finishes and framing alike.
Layout that suits how you actually use the room
Whether it's a primary ensuite or a family bathroom under daily pressure, we design the layout around real routines, not a generic template.
Fixtures and finishes chosen for longevity
We favour hardware and surfaces that hold their finish under daily humidity, guiding clients away from materials that look good on day one and fail by year three.

Where bathroom renovations quietly go wrong
The failures we're called to fix rarely show up on installation day. They surface eighteen months later as a soft spot behind the shower wall, grout that's discoloured despite regular cleaning, or a persistent smell that traces back to inadequate ventilation. In GTA homes with older plumbing and framing, skipping proper waterproofing or undersizing the exhaust fan is a near-guaranteed path to one of these outcomes.
Treating waterproofing as structural, not cosmetic
We build every wet area on a continuous waterproofing membrane, verified before tile ever goes down, and pair it with ventilation sized to the actual room and household. Only once that foundation is right do we move to the layout and finish decisions that make the bathroom feel considered rather than merely functional.
Our bathroom renovation process
A sequence that protects the parts of the room no one sees before addressing the parts everyone will.
- 1
Assessment and layout
We evaluate existing plumbing, framing and ventilation, then propose a layout suited to your household's routine.
- 2
Waterproofing and rough-in
Plumbing and electrical rough-ins are completed alongside a full waterproof membrane system before any finish work begins.
- 3
Tile and fixture installation
Tile, vanity, fixtures and lighting are installed with the same attention to alignment and sealing throughout.
- 4
Ventilation commissioning
We confirm the exhaust fan is properly sized and vented to exterior, not simply into the attic.
- 5
Final walkthrough
We inspect grout lines, caulking and hardware alignment together before considering the project complete.
Why GTA homeowners choose us for bathrooms
A bathroom renovation is judged by what happens in year three, not on installation day.
Licensed & Insured
Full licensing and insurance coverage for plumbing-adjacent renovation work.
Waterproofing Discipline
Continuous membrane systems installed and verified before any tile is set.
Ventilation Expertise
Exhaust systems sized and routed properly to protect finishes long-term.
Considered Layouts
Designs built around how your household actually uses the space daily.
Finish-Level Craftsmanship
Grout lines, caulking and hardware alignment held to a standard that shows.
Respect for Timelines
A single bathroom without water for weeks is disruptive; we schedule accordingly.
Bathroom renovation questions
How do you prevent water damage behind tile?
We install a continuous waterproofing membrane across all wet-area walls and the shower base before any tile is set, addressing the leading cause of hidden bathroom damage.
How long does a bathroom renovation typically take?
It depends on scope, but we provide a specific schedule as part of your quote so you can plan around any disruption to daily routines.
Can you improve ventilation in an older GTA bathroom?
Yes, undersized or improperly vented exhaust fans are common in older housing stock, and we routinely resize and reroute ventilation as part of a renovation.
Do you handle plumbing relocation for a layout change?
We do, and we assess the existing plumbing runs early so any relocation is planned into the quote rather than discovered mid-project.
What finishes hold up best in a GTA bathroom?
We favour porcelain tile, quality grout sealants and hardware finishes suited to constant humidity, and will guide you away from materials prone to premature wear in this climate.

Let's rethink the room you use every single day
Email us your bathroom's rough dimensions and what isn't working, and we'll return with a plan built on proper waterproofing from the start.
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Local, on-time service throughout Ajax and the surrounding area.
