Second fix & suite installation
Second fix is the stage where a building site turns back into a bathroom. The tiling’s cured, the walls are closed, and now the suite, shower, screen, vanity, taps and fittings all go in and get connected. It’s the part everyone pictures when they imagine “fitting a bathroom” — but it only goes smoothly because the hidden stages before it were done properly. This guide explains what second fix involves in a full bathroom installation, the order it happens in, and the small details that make the difference between merely fitted and genuinely finished.
What second fix means
A bathroom is fitted in two phases. First fix is the hidden work — pipes, feeds, waste runs and wiring set out and buried before the walls are boarded and tiled. Second fix is everything that happens after the tiling has cured: the visible fittings that hang on, or connect to, the work first fix left ready. If first fix is the skeleton, second fix is the skin and the muscle — the parts you see, touch and use every day.
The gap between the two phases matters. You can’t rush into second fix while tile adhesive and grout are still green, because the fittings lean on, seal against and screw into that tiled surface. Hang a heavy vanity or screen on a wall whose adhesive hasn’t set and you risk pulling it loose. So second fix is paced to follow proper curing — it’s one of the reasons a full bathroom takes 7–10 working days rather than a long weekend. On most jobs it falls across the final two or three days, described in full in our step-by-step process guide.
Done well, second fix is quick and satisfying — every part drops into place because first fix set it out to the millimetre. Done on top of a sloppy first fix, it’s a fight: tails in the wrong place, a valve at the wrong depth, waste that won’t line up. That’s why we treat the two phases as one continuous piece of work by one team, rather than handing a half-finished room to whoever’s free.
What gets fitted at second fix
Second fix is a run of individual installs, each checked for fit and function as it goes in. Here’s what typically gets fitted, roughly in the order it happens — heavier and lower items first, delicate and finishing items last.
The bath
Where there’s a bath, it usually goes in early because it’s big, heavy and often sits against tiled walls. It’s levelled, supported on its feet or cradle, connected to hot and cold and its waste, and sealed to the wall. Getting it dead level matters — a bath out of true either won’t drain fully or holds a puddle at one end.
The WC & cistern
The toilet is set, connected to its water feed and the soil branch, and its flush checked. On a wall-hung or back-to-wall pan the concealed frame was fixed at first fix, so second fix is hanging the pan, fitting the flush plate and making the final connections. It’s checked for a solid, wobble-free fit before we move on.
Basin & vanity unit
The vanity or pedestal is fixed, the basin set on top, and the tap and waste connected. A vanity hides the pipework and gives you storage, so it’s fitted level and square with the tiling. Trap and isolation valve go on now, so the basin can be serviced later without drama.
Shower valve, head & rail
The trim goes onto the valve body that first fix set in the wall, then the riser rail, head or fixed arm. Everything is set to sit flush with the tile face and lined up true. If it’s an electric shower, it’s connected and later tested as part of the certified electrical work.
Screen or enclosure
The shower screen or enclosure is fixed to the tiled wall and tray, levelled and sealed so spray stays where it should. Toughened safety glass is standard. On a walk-in shower the screen is sized and positioned around how you actually use the space, with no awkward step-over or door fouling the basin.
Taps, towel rail & accessories
Basin and bath taps are fitted and connected, the heated towel rail is hung and plumbed or wired, and the finishing accessories — robe hooks, roll holder, mirror or cabinet — go on last. These small pieces are what make a room feel considered rather than just kitted out.
Alongside the plumbing side, the electrician completes the second-fix electrical work — downlights, the extractor, the shaver socket, a heated mirror and any underfloor-heating thermostat — before the whole electrical installation is tested and certified.
The details that separate fitted from finished
Anyone can bolt a suite to a wall. The difference between a bathroom that looks like the brochure and one that looks like a rush job is in the details of second fix — the bits that take an extra ten minutes each and add up to a room you’re proud of. Here’s where the care goes.
Everything level, square and aligned
Fittings that line up with the tile grid, a bath that sits dead level, a screen that’s plumb, taps that sit central over the basin — these read as “quality” even when you can’t say why. We set out to the tiling, not just to the wall, so the finished room looks deliberate rather than approximate. A vanity a few millimetres out of square with the tile lines is the kind of thing you can’t unsee once you’ve noticed it.
Sealing that lasts
Every movement joint — where the bath meets the wall, where the tray meets the screen, around the basin — is sealed with quality sanitary silicone, properly tooled into a clean, even line. Thin, badly tooled silicone is the classic corner-cut: it peels within months and lets water track behind the suite. We take the time to seal it right, because it’s the last line of defence keeping water off your structure.
Second fix is also where we test as we go. Each tap is run, the shower fired up, the WC flushed, the waste checked for a clean, silent drain. Nothing is signed off on the assumption it’ll be fine — it’s proven to work before we move to the next fitting. By the time the room’s complete, every outlet has already been used and checked.
Snagging, sealing & hand-over
Once everything’s fitted, second fix flows straight into the finish of the job. This is the part that turns a working bathroom into a handed-over one — and it’s where a proper installer earns the trust that the fixed quote promised.
Final sealing
All movement joints siliconed and tooled, so the room is watertight at every junction. This is done last so nothing disturbs the sealant while other fittings go in.
Testing & certification
Every tap, the shower and the WC are run and checked, and the electrical installation is tested and certified. You get the paperwork that proves the room is safe and signed off.
Snagging walk-round
We walk the finished room with you and note anything that wants a tweak — a fraction more sealant here, an accessory nudged there — and put it right before we call the job done.
Final clean
The room is cleaned properly — no grout haze, no dust, no fingerprints — so you’re handed a bathroom that’s ready to use, not one you have to clean before you can enjoy it.
Care notes
We run you through how everything works and how to keep it looking its best — cleaning guidance, and a reminder to refresh the silicone every few years to keep it watertight for the long haul.
Written guarantee
You get a written workmanship guarantee on our fitting, plus the manufacturer warranties on the products we supplied. Our name’s on the work, so we stand behind it.
That’s the moment we’re actually working towards from the first survey: handing back a finished room you’re pleased with, on the fixed price we agreed. For how second fix fits the wider budget, see the cost of a bathroom in Plymouth.
Why the order within second fix matters
Even within second fix there’s a right order, and following it is what keeps the finish clean. Heavy, low items go in first — the bath, the vanity, the WC frame connections — because they’re awkward to manoeuvre and you don’t want to swing a cast bath past a freshly hung screen. Then the mid-height fittings: shower trim, taps, towel rail. Finally the delicate and decorative pieces — mirror, cabinet, accessories — and the sealing, which is always last so nothing disturbs the fresh silicone.
Work in the wrong order and you either damage something you’ve just fitted or find yourself unable to reach a connection you’ve boxed in behind another fitting. It sounds obvious, but it’s exactly the kind of thing a rushed or inexperienced fitter gets wrong, leaving scratched enamel, marked chrome or a joint that had to be sealed twice. We plan the sequence for your specific room so each piece goes in once, cleanly, and doesn’t get in the way of the next.
It’s also why one team carrying the job from first fix through to hand-over matters so much here. The person fitting your suite already knows where every feed and waste sits, because they — or their colleague on the same job — set it out days earlier. There’s no guesswork, no chasing another trade’s notes, and no “that’s not how I’d have run it”. Continuity is quiet, but it’s a big part of why the finish comes out right.
Second-fix & suite installation FAQs
How long does second fix take?
On a typical full bathroom it’s the final two or three days of the job — usually days eight to ten. It follows once the tiling has properly cured, because the fittings seal against and screw into the tiled surface. A bigger room with more fittings, or a premium suite with lots of detail, sits at the longer end. It’s paced, not rushed, because this is the stage you’ll see and use every day.
Why can’t you fit the suite the same day as tiling?
Because tile adhesive and grout need time to cure before anything heavy hangs on or seals against them. Rush it and you risk fittings working loose, or sealant applied to a surface that’s still moving. Proper curing is one of the reasons a bathroom takes 7–10 days rather than a weekend — the fittings that make the room are only as sound as the tiling underneath them.
Can you fit a suite I’ve bought myself?
Yes. Plenty of customers fall for a particular suite and want us to fit it. We’ll just ask to see the spec first so we can check it’s compatible and that everything’s on site before we start — there’s nothing worse than a job stalling because one part hasn’t arrived. If anything’s missing or unsuitable, we’ll flag it early rather than discover it mid-fit.
What happens if something doesn’t line up at second fix?
On a job where first fix was set out carefully, it doesn’t — that’s the whole point of doing the hidden work to the millimetre. If we ever do meet a surprise, we sort it there and then rather than bodge around it, and because it’s one team on one fixed quote there’s no argument about whose problem it is. That accountability is exactly what you’re paying for over a string of separate trades.
Proud of every bathroom we fit
Finished properly, not just fitted
The suite, the screen, the taps, the seal — the details of second fix are what you live with every day. We fit them level, sealed and tested, then hand back a spotless room with a written guarantee. Tell us about your bathroom and we’ll give you one clear, fixed quote.