What to Expect During Bathroom Installation
Published 20 May 2026 · Bridgnorth Bathroom Fitters
Most homeowners go through one or two bathroom installations in a lifetime. Fitters do dozens a year. That gap in expectation often causes more friction during the job than any actual problem — homeowners worry about things that are completely normal, while overlooking the things that genuinely matter.
This guide walks through what actually happens during a bathroom installation, what’s normal at each stage, and the things to keep an eye on.
Before day one
A reputable fitter will arrange a pre-start visit or call to confirm:
- Start date and expected duration
- Working hours each day
- Where they’ll park
- Where the route from front door to bathroom runs
- Which rooms need access (typically the loft, possibly a downstairs cupboard for the stopcock)
- Toilet and water arrangements if you only have one bathroom
- Whether anyone will be home, or whether keys are being left
Make sure all this is agreed before the morning of day one. A messy start sets the tone for the whole job.
Day 1 — Strip-out
What happens: dust sheets and floor covering down. Old suite removed. Old tiles taken off. Waste material out to a skip or van.
What to expect:
- Noise — a lot, from breaking tiles and removing fixings
- Dust — even with good containment, some dust escapes. Close interior doors and consider removing artwork or fabric from rooms next to the bathroom.
- Water off — the main supply will be off for parts of the day. Fill kettles and a few buckets if you’ll need water during the day.
- Surprises — strip-out is when hidden issues come to light. A good fitter photographs and reports anything significant before proceeding. You should hear about issues, not discover them on the final invoice.
By the end of day 1, the room should be back to bare walls and floor, with services capped off where needed.
Days 2–3 — First fix and structural
First fix is the plumbing and electrical work that happens before the walls and floor are tiled. New cable runs go in for lights, the extractor, the towel rail. New pipework is routed where layout changes require it. The waste pipe for the WC may need adjusting. Stud walls (for en-suites or shower enclosures) go up.
What to expect:
- More noise, particularly from drilling masonry walls
- Pipes routed through floor voids — sometimes a small section of floorboard gets lifted in the room below the bathroom
- Cables run through walls — small chases cut and replastered later
- A messy-looking room that doesn’t yet resemble a bathroom
If structural changes are needed — a new partition wall, an enlarged doorway — these happen here too.
Day 3–4 — Plastering and drying
Plaster repair where pipework changes have left gaps. Skim coat on any walls being tiled where the existing plaster isn’t sound. Sometimes a full skim of the ceiling.
What to expect:
- A wet plaster smell for a day or two
- Plaster typically needs 3–5 days to fully dry before tiling
- The job may appear to “stop” for a day while plaster cures — this is normal and necessary
Some fitters do this work in parallel with other prep so the project doesn’t actually stop. Others schedule a quiet day. Both are fine.
Day 4–5 — Tanking and tile prep
Waterproofing of wet areas. The primer goes on, then the liquid membrane or sheet system. Internal corners taped and reinforced. Pipe collars sealed. The floor of the shower zone treated. This is the most important invisible step of the whole job.
Floor levelling, if needed, happens around here too.
Days 5–8 — Tiling
The biggest single stage of the project, typically 2–4 days depending on the area and complexity.
What to expect:
- Tile cutting outside or in a separate area — wet saws are loud
- Setting out (planning the layout) happens before any tile is set — sometimes the fitter will draw lines on the wall first
- Tiles bedded with adhesive, then left overnight before grouting
- Grouting in your chosen colour — this happens once the tile adhesive has cured
- Sanitary silicone applied at junctions (around the bath, in corners) at the end of tiling
Slow, careful tiling is the sign of a fitter who knows what they’re doing. Fast tiling almost always looks worse on close inspection.
Day 8–9 — Suite installation
The bath goes in first (it’s usually the largest item and dictates other positions). Then the WC, basin and any vanity unit. Brassware — taps, shower valves, accessories — fitted to plumbing connections.
What to expect:
- A noticeable shift in how the room looks — finally starts to resemble a finished bathroom
- The fitter will commission and pressure-test the plumbing connections before sealing anything
- Water back on (intermittently as testing happens)
Day 9–10 — Second fix and finishing
Final electrical connections — switches, lights, towel rail, fan, shaver socket. Final plumbing connections. Painting and decoration. Snagging — small adjustments, a bit of sealant here, a touch-up of paint there.
The day before handover, a thorough clean: taps polished, dust removed, mirrors clean, floor mopped.
Handover day
You walk round the finished room with the fitter. They demonstrate any new equipment (especially showers with thermostatic valves, electric showers, or smart systems). You’re given:
- Electrical Installation Certificate (Part P)
- Gas Safe certificate, if any gas work was done
- Manufacturer warranties for the suite and brassware
- Workmanship guarantee paperwork
- Care and maintenance guidance (we suggest avoiding harsh cleaners on natural stone, for example)
A snagging list is normal — minor things to come back and fix in the next few days. A good fitter expects this and treats it as part of the job, not as criticism.
What’s normal vs what isn’t
Normal:
- Some dust escaping containment
- A 1–2 day delay if plaster drying takes longer than planned
- Snagging list at the end with 5–10 small items
- Occasional questions during the job — the fitter checking a decision
- Project running 1 day over the original timeline
Not normal:
- No daily clean — site left a mess overnight
- No communication for days at a time
- Sudden demand for additional money mid-job without prior discussion of why
- Working with no protection on your floors or carpets
- Refusing to provide certificates at handover
FAQ
Should I be home during the work? Not necessarily. Many customers leave keys and go to work. As long as someone is reachable by phone for decisions, this is fine. If you don’t have another bathroom, plan ahead.
Can I see progress photos if I’m out? Most fitters will send daily updates by message — photos of the day’s progress, anything unexpected, plans for tomorrow. Ask at quote stage.
Can I make changes during the job? Small changes — maybe. Larger ones — only with a written variation and clear cost impact. Don’t be surprised if a mid-job change adds £500 and a couple of days.
What if I’m not happy with something? Speak up immediately — not at handover. A small issue raised on day 5 is much easier to fix than the same issue raised on day 11.
Ready to start your project?
If you’d like to talk through what your specific project will involve, book a free site visit.