Almost every bathroom remodel that goes badly goes badly for the same reason: something was decided too late. Not because the work was poor, but because a choice that should have been made before the walls opened got made after they closed.
Bathrooms are unforgiving that way. The trades stack on top of each other in a fixed order, and each one buries the one before it. Knowing that order tells you what to settle early, what can wait, and why certain days look like nothing is happening.
Before anything is touched: the decisions
The genuine first step isn’t demolition. It’s settling the things that are expensive or impossible to change later.
The layout
Where the toilet, basin, shower and any tub will sit. This governs every piece of plumbing that follows. Keeping fixtures in place is dramatically simpler; moving them means opening floors and reworking drainage and venting. Either is fine — but it has to be decided now, not when the plumber is on site.
The shower type
Curbed or curbless, prefabricated base or custom-built pan, drain type and position. Curbless in particular affects the floor structure, so it cannot be added as an afterthought.
Tile format
This sounds like a finish decision and isn’t. Tile size determines how flat the substrate has to be, which is a preparation decision made long before anything is set. Large formats demand a flatter plane and more preparation time.
Anything recessed
Niches, benches, a recessed medicine cabinet, blocking for grab bars or glass hardware. All of these need framing, so they’re planned before walls close rather than chosen at the end.
Confirm the materials exist
Check availability and lead times on tile, the vanity, the valve and the glass before demolition starts. A back-ordered tile discovered mid-project stops everything at the worst possible moment.
Then: demolition
Out comes the old bathroom — fixtures, tile, and usually the substrate behind it. Protection matters here: the route through the house, anything staying in place, and dust control.
Demolition stops at the studs and subfloor, and then everyone looks properly at what’s been exposed.
The inspection nobody schedules
This is the stage most likely to change your project, and it’s the reason a good contractor talks about contingency before starting rather than after.
With everything open you can finally see: water damage around the tub, shower or toilet; a soft or deflecting subfloor; old galvanized supply lines; framing notched badly by a previous plumbing run; and waterproofing that had already failed. Repairs happen now, while access is free.
Finding something here isn’t a project going wrong. Finding it after tiling is.
Rough-in: plumbing, then electrical
With the walls open, supply lines are run, the shower valve is set at the correct depth and height, and the drain is positioned with proper fall and venting. If drains are moving, this is when the floor gets opened.
Electrical follows: lighting circuits, receptacles, the exhaust fan, and any heated floor. Ventilation is worth insisting on — ducted to the outside, not into an attic or a joist bay.
Where permits apply, this stage is typically inspected, and it has to pass before anything closes. Requirements vary by municipality, so confirm what applies locally.
Framing details and closing up
Niches, benches, curbs and blocking go in. Then insulation where relevant, and wall board — moisture-appropriate board in wet areas, cement or fibre-cement backer in the shower.
The quiet stages that do the real work
Substrate preparation
Walls and floors are made flat within tolerance, the pan is formed and sloped if it’s custom, and everything is checked. Nothing about this stage is visible in the finished room, and it determines whether the tile looks crisp or approximate.
Waterproofing
A complete system across the pan and wet-zone walls, with every junction detailed: corners, curb, niche, drain connection, pipe penetrations. This is the day that decides whether the shower is sound in fifteen years.
If you look in on your own project once, look now.
Tile
Set-out first — establishing lines so cuts are balanced, joints align between floor and wall, and the niche sits within the pattern rather than across it. Then setting, then curing, then grouting on a later day. Silicone goes into movement joints at changes of plane rather than grout.
Fixtures, then glass
Vanity, toilet, faucets, valve trim, lighting and accessories go in. Custom frameless glass is usually measured only now, because it has to fit the finished surfaces — then fabricated and delivered, which is the most common cause of a bathroom looking finished and not being usable yet.
Paint, trim and handover
Final paint, trim, door adjustments if the floor height changed, sealants, and any sealer on natural stone. Sealants and adhesives need curing time before the shower gets wet, so ask when it can genuinely be used — it’s usually a little later than it looks.
What this means for you
Three practical takeaways:
- Front-load your decisions. Layout, shower type, drain position, tile format and anything recessed should be settled before demolition. Everything after that is easier.
- Budget contingency for the inspection stage. On an older bathroom this is planning, not pessimism.
- Expect quiet days. Substrate, waterproofing and curing are the stages that decide the outcome, and they look like nothing is happening.
A bathroom rushed through the middle stages looks identical on handover day and different in five years. The order exists for a reason.
For the shower specifically, how to remodel a shower walks through the same sequence in more detail. On budgeting, what a bathroom remodel costs and why estimates vary covers what moves the number, and removing old bathroom floor tile goes deeper on the demolition stage. You can read about our bathroom remodeling services or get in touch.
