Here’s an uncomfortable truth. That bath in your bathroom is basically furniture now.
When did you last actually use it? Think about it. For most people the answer is “the kids, occasionally, under protest” or “never, but it’s nice to look at, I suppose.” Meanwhile, it’s sitting there hoarding a third of your bathroom’s floor space like it’s paying rent.
A bath-to-shower conversion is one of the most requested jobs we get, and it’s easy to see why. Rip out the tub nobody uses, put in a proper walk-in shower, and suddenly the whole room breathes again. Especially handy if space is tight or you’re thinking ahead to accessibility.
Here’s the catch, and it’s a big one. A tub-to-shower conversion looks simple from the sofa with a cup of tea and a Pinterest board open. It is not simple. Get it wrong, and you’re not looking at “Oh well, we’ll live with it.” “You’re looking at leaks, drainage that never quite works right, and a shower that just feels off every time you use it, forever.
So here are the mistakes that cause all of that, the ones we see over and over, and exactly how to dodge them.
What Does a Conversion Actually Involve?
This one trips people up.
A bath to shower conversion isn’t “lift bath out, drop shower tray in, job done by lunch”. It involves checking the waste pipes, full waterproof tanking, levelling the tray properly, tiling, and very often ventilation and electrical work too. It’s a proper job, not a swap.
That’s the bit people underestimate. You’re not just borrowing the space a bath leaves behind, you’re changing how water moves through that entire corner of the house. Which is exactly why it needs planning by people who understand the trade, not pieced together on a Saturday between the DIY shop and the football.
The Mistakes People Actually Make
1. Not Checking the Plumbing First
Baths and showers don’t always share the same waste pipe setup, a genuinely common surprise. Before you replace the bath with a shower, get someone to actually check the existing plumbing and water pressure. Ten minutes now saves a very annoyed phone call later.
2. Skipping Proper Waterproofing (Tanking)
The big one. The one that causes real damage, quietly, for months before anyone notices. A shower in the bathroom needs full waterproof tanking behind the tiles, not a bead of silicone round the edges and a hopeful shrug.
3. Choosing the Wrong Shower Tray Height
Low-profile trays look sleek in the showroom. But if your waste pipe doesn’t have enough of a fall, that sleek low tray becomes a slow-draining puddle machine. Get the height right at the planning stage. It’s much cheaper to fix on paper than after the tiles are down.
4. Underestimating Ventilation
A bath fills, sits, and empties. A shower runs constantly in a smaller, enclosed space, dumping steam everywhere. Skip a decent extractor fan and you’re basically growing mould on purpose. It’s one of the most common, and most avoidable, issues in bathroom shower conversions.
5. Going Too Small on the Enclosure
Saving a few centimetres feels smart at the planning stage. It feels considerably less smart every single morning for the next decade when you’re elbow-to-tile getting dressed. Aim for at least 800 mm x 800 mm if you possibly can.
6. Ignoring the Glass Screen or Door Swing
In a small bathroom, a hinged door swings out and eats more usable floor than you’d expect. It genuinely surprises people. Sliding or bifold screens are usually the smarter call in tighter rooms.
7. Not Matching the Flooring Properly
Pull the bath out, and you often find flooring that doesn’t match or wasn’t level to begin with. Plan for it. Nobody wants to discover this mid-job.
8. DIYing the Electrics and Plumbing
Electric showers need proper isolation and circuit work. Plumbing changes need to meet current building regs. Bathrooms fall under Part P of the Building Regulations precisely because water and electrics in the same room is not a place to guess. This isn’t the corner to cut, both for safety and because the finished job needs to hold up.
Does Converting a Bath to a Shower Actually Save You Space?
Genuinely, yes, most of the time.
A well-planned shower enclosure or wet room usually has a smaller footprint than a full bathtub, which frees up room for storage or just for turning around without hitting something. In a tight bathroom, that’s not a small win.
But don’t assume any shower automatically saves space regardless of size or door style. The saving comes from choosing the right enclosure and screen for your actual room, not from removing the bath alone. Get the layout wrong and you’ve swapped one space problem for another. A decent fitter will tell you what genuinely works for your room, not just what fits in the brochure.
Will Ditching Your Only Bath Tank Your Resale Value?
A fair worry, and a common one.
If you’ve got more than one bathroom in the house, converting one bath to a shower rarely bothers buyers at all. If it’s your only bathroom, some buyers do still prefer keeping at least one tub, usually the ones with small kids or a dog that needs bathing.
It’s not something to lose sleep over either way, and preferences vary from buyer to buyer. Worth a quick chat with a fitter who knows your local market before you commit, just so you’re going in with eyes open.
Who’s This Actually For?
If your bath sits there unused, your bathroom feels cramped, or you’re thinking ahead about accessibility for the years down the line, this is for you.
Spotting the problem and knowing the right fix aren’t the same thing. Whether that’s a full conversion, a wet room, or something more modest depends on your plumbing, your household, and how the room’s actually laid out. Worth an actual conversation, not a decision made off a showroom display.
How It Fits Into the Rest of Your Bathroom
A good conversion doesn’t happen in a vacuum. It should account for ventilation, how the flooring continues, and how the new layout affects storage and movement in the room as a whole.
Matching tiling, consistent finishes, and choices that suit how your household actually lives. No single fitting carries all of that on its own. That’s the job of whoever’s planning the sequence for you, so the finished shower feels like part of the room, not bolted on as an afterthought. Our tiling service and full bathroom renovation team work together on exactly this.
The Right Way to Plan This
Plumbing, waterproofing, and often electrics too. This is not a rushed weekend DIY job, however tempting the tutorials look at 11pm.
The proper route is a consultation with a team who do this for a living. They check your plumbing, your space, and what’s realistic for your budget, then plan exactly how it should go. That’s the entire difference between a shower that holds up for years and one you’re quietly hoping doesn’t leak the first winter.
At Sheldon Bathrooms, our own directly employed team handles every bath to shower conversion, with a fixed price agreed upfront. Get in touch for a free consultation and find out what’s possible for your bathroom.
Conversions That Put Quality First
Plumbing, waterproofing, structural work. When a job touches all three, who does it matters just as much as how it looks.
A Directly Employed Team
Based in Llanelli, covering all of South Wales. Every installer in your home works directly for us. No subcontractors, no unknown faces, no passing the buck.
A Plan Built Around You
Tray height, enclosure size, and waterproofing are all specific to your bathroom. We work them out in a free in-home consultation, which is exactly how you avoid every mistake on the list above rather than discovering them after the tiles are down.
A Fixed Price, Start to Finish
One fixed, transparent quote. No surprise extras appearing halfway through. One company, every trade, so you’re not stuck coordinating separate contractors yourself while showering at your mum’s.
FAQs
What does a bath to shower conversion typically involve?
Waste pipe checks, waterproof tanking, tray fitting, tiling, and often ventilation or electrical work, considerably more than just swapping the fixture.
Does a bath to shower conversion save space?
Usually, yes, especially in smaller bathrooms, but it depends on choosing the right enclosure and screen for your room, not the conversion alone.
Will removing my only bath affect resale value?
Rarely an issue with more than one bathroom in the house. With just one, it’s worth a quick chat with a fitter who knows local buyer preferences.
How long does a bath to shower conversion take?
Most take a few days to just over a week, depending on waterproofing, tiling, and any plumbing changes needed.
How do I start a bath to shower conversion?
With a free consultation reviewing your plumbing, space, and goals, so we can tell you honestly what’s realistic.
Sheldon Bathrooms Ltd is a bathroom renovation company based in Llanelli, serving all of South Wales. Our directly employed team delivers full start-to-finish bath to shower conversions and bathroom remodeling with fixed pricing and no subcontractors. Book a free consultation or get in touch today.