Bathroom Renovation Checklist: From First Fix to Snagging

A bathroom renovation runs on sequence. Get the order of works right and each trade hands over a clean, finished surface to the next; get it wrong and fixtures arrive before the walls are tiled, or the specification is still open when the plumbing is already buried. This bathroom renovation checklist is built for contractors, fitters and project buyers who need a repeatable method, not a one-off list. It runs from planning to snagging in five phases, marks the moment in each phase where the fixture specification must be locked, and shows where the 25–35 day production lead time sits inside the programme. Work through this bathroom renovation checklist phase by phase, and the sequence — and the ordering — take care of themselves.

How to Use This Bathroom Renovation Checklist

Treat the checklist as a gate system rather than a set of tasks. Each phase ends with a decision or a completed surface, and the next phase should not start until that gate is passed. The critical gates are the specification cut-off in Phase 1 (before anything is ordered) and the first-fix completion in Phase 2 (before the walls are closed). Everything after that is sequencing and quality control.

Two threads run through the whole bathroom renovation checklist. The first is the fixture specification: it must be fixed in writing early, because rough-in dimensions, tap-hole configurations, flush systems and mounting types cannot be changed once the build-up is set. The second is lead time. Fixtures are usually produced to order, so a 25–35 day production window plus freight must be scheduled backwards from the date the goods are needed on site. Ordering late is the single most common cause of a stalled bathroom renovation.

Phase 1: Planning, Survey and Specification

This phase locks the brief. Nothing should be ordered until it is complete.

• [ ] Survey the room and measure the finished space, not the original drawing — note wall-to-wall, floor-to-ceiling and door swing.
• [ ] Confirm the drainage layout: soil pipe position and rough-in distance, waste positions and any existing falls.
• [ ] Decide the toilet type (wall-hung, floor-standing or two-piece) against the wall structure and plumbing, then confirm whether a concealed cistern, support frame and flush plate are required.
• [ ] Lock the fixture specification here. For every line, record installation type, dimensions, tap-hole count, overflow, flush system and finish.
• [ ] Decide the basin mounting (countertop, drop-in or wall-hung) and whether the vanity unit is wall-hung or freestanding.
• [ ] Confirm certification requirements for the destination market against the specification sheet.
• [ ] Request samples and quotations against the fixed specification, and place the fixture order now so the 25–35 day lead time runs in parallel with the build.
• [ ] Agree the delivery date and, for phased projects, the staged shipment schedule.

The specification gate is the most important in the checklist. Once the order is placed against a fixed specification, the sample approval, the loading plan and the delivery date all follow from one document. Items such as our ceramic toilets and bathroom vanities should be specified to the millimetre at this stage.

Phase 2: Strip-Out and First Fix

First fix is the plumbing and preparation stage: the pipework, the in-wall frame and the electrical containment go in now, and the walls are then closed.

• [ ] Isolate and drain services; strip out the old suite and make the room safe.
• [ ] Confirm the substrate — floor level, wall solidity and whether a stud or block wall will carry the fixtures. A wall-hung toilet needs a load-bearing frame or wall.
• [ ] Set out and fix the concealed cistern frame and support frame if the toilet is wall-hung; check it is level and plumb before fixing, and confirm the finished-wall thickness allowance for tiling.
• [ ] Run and test the water supply and waste connections; fit an isolation valve so the cistern can be serviced later without shutting off the mains.
• [ ] Fit any electrical containment required by the design, keeping it clear of the wet zone.
• [ ] Test every connection before the walls are closed — fill, flush and check for leaks.
• [ ] Leave the frame, valves and pipework accessible for inspection, and photograph the first-fix stage for the record.

If a wall-hung toilet is specified, the frame is the component that has to be right now; the plate and bowl follow from it. Our concealed cistern range is supplied with matching frames and flush plates precisely so the system interface is not left to chance.

Phase 3: Waterproofing, Tiling and Setting Out

This phase creates the finished surfaces and the cut-outs that the fixtures will drop into.

• [ ] Apply the waterproofing membrane to the wet zone — walls, floor and any shower or bath surround — and allow it to cure fully.
• [ ] Confirm the finished floor level and set the floor fall to the waste before tiling.
• [ ] Tile the walls, leaving cut-outs for the flush plate, taps and any wall-hung basin, and keep a spare tile from the same batch.
• [ ] Tile the floor and grout once the wall tiles have set.
• [ ] Check that the flush-plate cut-out aligns with the frame behind it — a plate that sits proud of or recessed into the tile is the classic first-fix/tiling mismatch.
• [ ] Seal the joints between wall and floor and around the bath or shower.

No fixture decisions should be outstanding at this point. If the specification was locked in Phase 1, this phase is purely about finish quality; if it was not, tiling is where a late change becomes expensive, because any new dimension may mean re-cutting or re-tiling.

Phase 4: Second Fix, Fixture Delivery and Installation

Second fix is where the ordered fixtures are installed. By now, the delivery should already be on site.

• [ ] Receive the fixture delivery and check it against the specification sheet — models, sizes, finishes and quantities, with the packing list.
• [ ] Inspect for transit damage before installation: glaze, edges, plate faces and frames.
• [ ] Install the sanitaryware: seat the basin with a silicone bead where it meets the top, mount the toilet bowl on the frame using the correct bolts and sealing washers, and level before fully tightening.
• [ ] Connect the cistern and flush valve, and fit the flush plate to the frame’s fixing points — check the plate actuates the flush with a light press.
• [ ] Install the bathtub, level it and connect the drain, overflow and filler set.
• [ ] Fit the finishing items to one consistent metal finish across the room.
• [ ] Run a full flush-and-fill test on every WC and check all waste connections for leaks before sign-off.

The sequencing rule in this bathroom renovation checklist is simple: fixtures should arrive after tiling is complete and before the room is dressed. Because production takes 25–35 days plus freight, the order placed in Phase 1 is the delivery you receive here — which is why late ordering pushes second fix out and leaves fitters waiting.

Phase 5: Snagging and Handover

The bathroom renovation checklist closes with quality control and documentation.

• [ ] Walk the room and snag: check glaze consistency, plate alignment, sealant lines, door and drawer action, and that every fixture matches the approved specification.
• [ ] Test every flush, tap and waste again with the room in its final state.
• [ ] Confirm sealant has cured cleanly around basins, baths and floor junctions.
• [ ] Hand over the installation guidance and record the model references for each fixture so spares can be re-ordered accurately.
• [ ] Keep spare plates, valves and fittings from the same production run for future maintenance.
• [ ] Store the specification sheet, packing list and any certificates with the project file.

Recording model references at handover is what makes the next reorder simple. When the building needs a replacement basin, plate or seat months later, the model reference on the specification sheet is what lets a supplier reproduce a matching item rather than a near-match.

Frequently Asked Questions

Q: What is the correct order of works for a bathroom renovation?

The order is planning and specification, strip-out and first fix, waterproofing and tiling, second fix and fixture installation, then snagging and handover. The key rule is that the fixture specification is locked before anything is ordered, and the walls are not closed until all first-fix connections have been tested.

Q: When should I order the fixtures?

Place the fixture order as soon as the specification is fixed in Phase 1, so production runs in parallel with the build. With a 25–35 day production lead time plus freight, ordering late is the most common cause of a stalled second fix, because the goods arrive after the room is ready.

Q: What must be decided before first fix?

Before first fix, confirm the toilet type and whether a concealed cistern and frame are needed, the frame’s position and finished-wall allowance, all rough-in and waste positions, and the full fixture specification. These decisions determine what goes inside the wall and cannot be changed once it is closed.

Q: What is snagging in a bathroom renovation?

Snagging is the final quality inspection before handover, where you check the finished room against the specification — glaze consistency, plate and seal alignment, flush and drainage performance, and door and drawer action. It also includes recording model references so spares can be re-ordered later.

Q: How far in advance should the delivery be scheduled?

Schedule delivery backwards from the date the fixtures are needed on site, allowing the 25–35 day production window plus freight and clearance. For phased projects, agree staged shipments when the order is placed, because each run repeats the same models and can only be planned from a fixed specification.

Q: What should I check when the fixtures arrive?

Check the delivery against the specification sheet and packing list — models, dimensions, finishes and quantities — and inspect glaze, edges, plate faces and frames for transit damage. Report any discrepancy before installation begins, while replacements can still be arranged without disrupting the programme.

Conclusion

A bathroom renovation checklist works because it turns a sequence of trades into a set of gates: lock the specification in planning, test before the walls close, tile to the right cut-outs, install to the approved sample, and snag before handover. Keep the fixture specification on one sheet, schedule the 25–35 day lead time backwards from site need, and record model references for spares. Contact our team for a free quotation on the fixtures for your next bathroom renovation.