How Long Should a Bathroom Installation Take?

For customers

A typical complete bathroom installation will often take somewhere around one to two working weeks, but that is only a broad guide.

The important question isn't really whether your bathroom takes seven days, ten days or two weeks. It is whether the amount of time makes sense for the work being done.

A straightforward bathroom where the new products are going back in roughly the same places and everything underneath is in good condition is completely different from changing the layout, moving drainage, repairing floors, preparing walls, waterproofing, extensively tiling the room and coordinating several different trades. They shouldn't automatically take the same amount of time.

Ask what is actually included in the programme

“Ten days” doesn't tell you very much on its own. What happens during those ten days?

The old bathroom may need removing. Plumbing and electrical work may need altering. Walls and floors may need preparing. Wet areas may need waterproofing. There may be plastering, tiling, grouting, sanitaryware, shower installation, ventilation, sealing, testing and finishing.

Some of those things can overlap. Many can't. A good installer should be able to talk you through the general sequence so you understand how the room gets from the old bathroom to the finished one.

You don't need an hour-by-hour construction programme. You should have a reasonable idea of what to expect.

There may be days when nobody is physically working

This is worth understanding before the job begins. Sometimes a bathroom needs to be left alone. That can be frustrating when the room is out of use and you are understandably desperate to get it finished.

But some backgrounds and products need to dry or cure before the next stage can be completed correctly. Exactly how long depends on the materials and systems being used. Some specialist products allow work to continue very quickly, while others need more time.

So if you look into the bathroom and nobody is there, don't automatically assume the job has been abandoned. Ask what is happening. If the answer is, “We're waiting until that is ready before we tile over it,” that can be a very good reason for apparent inactivity.

Trying to save a day by covering something before it is ready can create a much longer problem later.

Fast and experienced are not necessarily the same thing

A very experienced bathroom installer can often complete a project efficiently. They understand the order in which things happen. They know which products need ordering in advance. They know when the plumber, electrician and tiler need to be there.

They are less likely to spend half a day discovering something they should have thought about during the survey. That experience has value. But there is a difference between being efficient and simply trying to rush the job.

I would not automatically choose one installer because they promise to complete the bathroom several days faster than everybody else. Ask how. If they have a good team, an organised programme and years of experience completing similar bathrooms, there may be a perfectly good explanation.

If the answer seems to rely on every stage happening immediately after the one before it with no room for preparation, drying, testing or problems, I would be more cautious.

Small bathrooms can still take time

It is natural to assume a small bathroom should be quick. Sometimes it is. But small rooms can also be awkward places to work.

There might not physically be enough room for two tradespeople to work comfortably at the same time. The plumber may need the room first. Then the electrician. Then the tiler. A bathroom with relatively few products can therefore still have quite a complicated sequence.

The amount of tiling matters too. A small fully tiled bathroom with complicated tile work can involve more time than a larger room with limited tiling. Size is only one part of the calculation.

Changing the layout changes the timescale

Replacing a toilet, basin and shower in roughly their existing positions is generally simpler than moving everything around the room. Move a toilet and the drainage may need altering. Move the shower and both water supplies and waste may change.

Wall-hung products, concealed valves, niches, complicated lighting, underfloor heating or extensive tile patterns can all add stages and time.

Again, none of that is a problem. It simply needs to be reflected in the programme.

This is why comparing your neighbour's bathroom with yours isn't particularly useful. Their bathroom may have been a completely different installation.

The biggest unknown may be the bathroom you already have

Until the old bathroom comes out, nobody can see everything underneath it.

• There may be water-damaged flooring.
• Old plumbing.
• Poor previous repairs.
• Walls that aren't suitable for the new finish.
• A leak nobody knew existed.

An experienced installer can often recognise warning signs beforehand and allow for what is reasonably predictable. They still cannot see through walls and floors.

If something genuinely unexpected is found, dealing with it correctly may add time. That is usually better than covering it back up because everybody wants to meet the original Friday finish date.

If this is your only bathroom, plan for it before the work starts

This is important, but there is responsibility on both sides. Your installer should explain as clearly as possible when you are likely to lose the use of the toilet, shower or bath and how long those periods may last. They should organise the work sensibly and avoid unnecessary disruption.

But the contractor isn't a magician. If you only have one bathroom and you are having that bathroom completely removed and replaced, there will almost certainly be periods when some or all of those facilities simply cannot be used. That isn't necessarily the installer's fault and it shouldn't become a reason to put pressure on them to rush stages of the job that need time.

You have some responsibility as the customer to plan for that too. That might mean arranging somewhere else to shower, staying with family for part of the work, using facilities at work or the gym, or simply making sure everybody in the household understands what will and won't be available during the installation.

Sometimes a toilet can be kept operational for parts of the project or temporarily reinstated. Sometimes that simply isn't practical. Discuss it before work starts rather than assuming the installer will somehow keep a fully functioning bathroom available while replacing the bathroom.

Most importantly, don't let the inconvenience of being without facilities force the job along faster than it should go. If something needs to dry, cure or be properly prepared before the next stage, restoring your shower a day earlier is not worth creating a problem that could remain behind the tiles for years.

Ask how the fitter manages other trades

A complete bathroom may involve a plumber, electrician, tiler, plasterer and other specialists. Sometimes one experienced installer can undertake several parts of the job. Sometimes different people will be involved.

Neither approach is automatically better. What matters is how well everything is organised.

There is another question customers rarely ask that I think is worth asking: What happens if one of your trades lets you down?

Imagine the bathroom is stripped out and ready for tiling, but the tiler becomes ill. Does the installer have other good people they regularly work with? Or is everything dependent on one person becoming available again?

That doesn't mean you should avoid a small installation business. Some of the best tradespeople are sole traders with excellent networks built over many years. Equally, simply being a larger company doesn't guarantee anything.

What you are looking for is a business that has enough organisation and good relationships around it to deal with the normal problems that sometimes happen. That resilience can make a very real difference when your bathroom is unusable.

A realistic installer may sound less impressive at the beginning

Suppose one installer tells you the bathroom will definitely be finished in seven days. Another tells you they expect around ten days but would rather allow a little extra because of the amount of preparation involved.

The first answer sounds better. It isn't automatically the better answer.

An experienced installer knows there are stages they can predict very accurately and others where the condition of the existing room can change things. I would rather somebody explained that honestly at the beginning than promise the shortest possible programme to win the job and then spend the second week explaining why they are late.

Look at the whole conversation. Does the programme sound considered? Have they explained the stages? Have they thought about other trades? Have they discussed products, preparation and likely unknowns? That tells you much more than the finishing date on its own.

How long will I actually be without a usable bathroom?

This can be different from asking how long the whole installation takes. The bathroom might take two weeks from strip-out to final finishing, but the toilet may be available for some of that time. Or the main bathroom may technically be usable before a final screen, accessory or finishing item is completed.

Ask the installer. Particularly if you only have one bathroom, understanding the period without essential facilities can be more useful than knowing the final project duration. Just remember that this is something to plan around, not something the installer can always eliminate.

Be careful about forcing the deadline

Sometimes there is a genuine deadline. Visitors are arriving. You are going on holiday. The property has to be ready for somebody moving in. Tell the installer before the job is agreed.

But remember that the bathroom still needs to be installed properly. If a product needs more time, it needs more time. If damaged flooring is uncovered, it needs dealing with. The calendar cannot make a wet material dry or a hidden problem disappear.

Bathrooms are particularly unforgiving when somebody tries to force the programme simply because an arbitrary completion date has become more important than the installation.

So, how long should a bathroom installation take?

For many straightforward full bathroom refits, around one to two working weeks is a reasonable broad guide. But it is not a promise and it is certainly not a rule.

A simple replacement may be quicker. A bathroom involving layout changes, extensive preparation, damaged floors, significant tiling, several specialist trades or more complicated products can take considerably longer.

The physical size of the room doesn't tell the whole story either. Sometimes a small bathroom is actually harder to programme because only one trade can work comfortably in it at a time.

The better question to ask your installer is: “Can you talk me through how you expect the job to run?”

Listen to the answer. An experienced installer should be able to explain the main stages, where the important dependencies are and what could realistically change the programme.

And if there is a day when nobody is physically working because something needs to dry before the next stage begins, that doesn't necessarily mean your bathroom is falling behind. Sometimes doing nothing for a little while is part of doing the job properly.