“We just want a walk-in shower” is usually how the conversation starts. By the time we have finished talking, most homeowners realise that what they actually want is a walk-in shower designed around their bathroom – and that these two things require a very different set of decisions.
Over 500+ projects across Berkshire, we have fielded this particular request more than almost any other. Walk-in shower installation in Reading is one of the most common bathroom briefs, and one of the most misunderstood. The showroom version looks effortless: a frameless glass panel, a linear drain, a large-format tile running wall to wall. What happens behind that glass, and beneath that tile, determines whether the result lasts twenty years or starts causing problems within five.
Walk-In Shower or Wet Room: Where the Boundary Sits
Before any specification gets locked in, it helps to be clear on terminology – because these are genuinely different products, not two names for the same thing.
A walk-in shower has a defined shower zone, typically enclosed by one or two fixed glass panels, with a shower tray or a tanked section of floor directing water to a drain. A wet room has no shower tray and no fixed enclosure: the entire floor is waterproofed and falls toward a drain, with water travelling more freely across the surface. Both achieve the open, accessible look. The installation method, the structural implications, and the waterproofing specification differ considerably between the two.
At Reading Renovations, we covered the wet room route in detail in our guide to wet room installation in Reading. Walk-in showers – particularly those using a low-profile or flush tray with a glass screen – account for the majority of our bathroom enquiries, and are what most homeowners have in mind when they say they want to remove the old cubicle and open the space up.
What the Floor Beneath Your Shower Actually Determines
This is where the conversation gets technical, and where the difference between a well-installed walk-in shower and a disappointing one begins.
Reading’s housing stock is predominantly Victorian and Edwardian, with a significant proportion of 1930s and 1950s semi-detached. These properties share a common structural characteristic: suspended timber floors, typically 150mm or 200mm floor joists spanning across the room. That construction type introduces specific considerations for any wet area installation.
Joist direction and drainage. A linear drain – the long slot drain that has become the signature feature of contemporary walk-in showers – needs water to fall in one direction. If the joists run parallel to the drain line, routing a new waste pipe away from it without cutting across load-bearing members is straightforward. If the joists are perpendicular, it requires more careful planning. Neither situation is a barrier to installation, but the drainage route has to be confirmed before tile specification begins, not after the tiles are on the floor.
Shower tray vs tanked floor section. Low-profile stone resin shower trays (20mm to 40mm height, sitting flush to the surrounding tile) have improved considerably over the past decade. They sit on a pre-formed former and simplify the waterproofing zone considerably. The alternative – a fully tanked and graded floor section, bonded to the joists and boarded to create the fall – works well but adds programme time and is more sensitive to seasonal joist movement over the years.
For Reading’s period properties in particular, we generally recommend the pre-formed former approach where the layout allows it. Suspended timber floors breathe and move as humidity and temperature shift through the seasons. A rigid tanked bed bonded directly to moving timber creates long-term stress at the junction. The tray sits on the former, the former sits on the structure – the seasonal movement is accommodated rather than resisted.
This is not a generalisation that applies equally to every home. Properties in Earley and Woodley with 1950s concrete ground floors, or newer-build bathrooms in Bracknell with solid screed substrates, have different constraints and different options. The floor construction is the first thing we establish at the site visit.
The Installation Sequence From First Fix to Finished Glass
Walk-in shower installation is not a single-trade job. It draws on first-fix plumbing, waterproofing, tiling, and final-fix plumbing and glasswork. Understanding the sequence helps homeowners plan realistic timescales and explains why certain decisions must be made early.
First fix comes before anything else is visible. Supply pipes are positioned, the waste route is confirmed, and any additional drainage pipework is run. In an upstairs bathroom above a bedroom or hall – common in Reading’s Victorian terraces – this often means working through the ceiling below. Worth planning for at the outset.
Once the floor structure is prepared and the tray former or pre-formed base is bedded, waterproofing is applied. This covers the floor within the shower zone and a minimum of 200mm up every adjacent wall surface – more where the shower head position directs water toward a particular wall. All junctions and corners are reinforced with bonding tape before the main membrane coat is applied. Getting this stage right is what prevents the water from finding its way through to the floor structure below over time.
Tiling follows. Large-format tiles (600mm x 600mm or larger) read beautifully in a walk-in shower, but they require an exceptionally flat substrate and careful slip-resistance checking for the floor zone. A tile with a minimum R10 slip rating is the baseline for any wet shower floor. Some ranges that look striking in a showroom fall below this in testing. We verify the slip rating at specification stage, before any tiles are ordered, because changing tile selection mid-project is expensive and disruptive for everyone.
The glass enclosure installs after the wall tiles are grouted and cured. This sequencing matters: glass panels are fixed to the tiled wall surface, not to the wall structure itself. The finished tile face is the reference plane. Getting this in the right order avoids the gaps at junctions that silicone and trim strips cannot fully hide.
Frameless Enclosures and the Reading Hard Water Factor
Reading sits in a hard water area. Thames Valley water consistently registers above 300 parts per million of calcium carbonate, placing it among the harder areas in southern England. That matters directly for frameless shower glass – which remains the most popular enclosure specification we fit across Berkshire.
Untreated glass in a hard water area accumulates limescale deposits that progressively etch into the surface at a microscopic level. A frameless panel that looked showroom-fresh at installation can appear dull and clouded within two years if maintenance is not right. There are two practical responses to this.
The first is a factory-applied nano-coating on the glass surface, which significantly reduces mineral adhesion. Not all manufacturers include this as standard. At Reading Renovations, we specify it on every frameless panel we install – it adds a small cost upfront and measurably extends the glass’s useful life.
The second response is consistent maintenance: a squeegee after every shower, a weekly mild-acid rinse with diluted white vinegar, and no abrasive cleaners. Homeowners who maintain this routine genuinely extend the finish by years. Those who do not tend to contact us about replacement glass within three to five years.
Frame profiles – the extruded aluminium channels used on traditional enclosures – are less susceptible to visible scaling, but the horizontal surfaces around hinges and channels collect deposits that are harder to access with a cloth. Frameless panels with a single fixed screen and a hinged return have fewer metal-to-glass junctions and are simpler to maintain in hard water areas like Caversham, Tilehurst, and central Reading.
Building Regulations, Part M, and Shower Ventilation
Walk-in showers installed as part of a bathroom refurbishment in an existing property do not usually require a formal Building Regulations application, provided the work is like-for-like in terms of drainage position and layout. Where a new drainage penetration through a floor is created, or where structural alterations are involved – removing a partition, for example – a Building Regulations notification through Reading Borough Council building control is worth confirming before work begins.
The area worth knowing about is Part M, the accessibility regulations. If anyone in the household has reduced mobility, or if the property is being adapted for longer-term use, a walk-in shower with a level or flush-to-floor threshold fulfils Part M access criteria in a way that a traditional raised-kerb shower tray does not. The Planning Portal’s guidance on Part M sets out the relevant threshold requirements. We can design and specify accordingly where this is relevant.
Ventilation is the other regulatory area that sometimes gets overlooked. Building Regulations Part F requires mechanical extraction in bathrooms without an openable external window, and extraction rates in wet areas should be sufficient to remove steam before it reaches ceiling timbers and joists. Where we carry out bathroom renovations that include a new walk-in shower, we always check the existing fan against Part F requirements. An undersized extractor is one of the most consistent contributors to mould growth in period property bathrooms – it is a cheap fix at installation stage and an expensive remediation job later.
Frequently Asked Questions
What is the difference between a walk-in shower and a wet room?
A walk-in shower has a defined shower zone with a tray and one or two glass panels. A wet room has no tray – the full floor is waterproofed and graded to drain, with no fixed enclosure. Both achieve an open, accessible result. The installation method, floor preparation, and waterproofing approach differ considerably. We covered the wet room route in a separate guide if that option is relevant to your project.
Do I need planning permission for a walk-in shower installation in Reading?
In most cases, no. Installing or replacing a shower within an existing bathroom falls under permitted development. If structural changes, new drainage penetrations through a floor, or accessibility adaptations are involved, we recommend confirming with Reading Borough Council building control whether a Building Regulations application is needed before work starts.
How long does walk-in shower installation take?
A straightforward replacement of an existing shower cubicle with a walk-in shower using a pre-formed tray former typically takes four to six working days, assuming the first-fix plumbing does not require major re-routing. More complex projects – full bathroom refurbishment, new drainage runs, or structural adjustments – extend the programme. We confirm a realistic timeline after the site visit.
Can a walk-in shower be fitted in an upstairs bathroom with timber floors?
Yes. The majority of our walk-in shower installations are in upstairs bathrooms in period Reading and Berkshire properties with suspended timber floors. The structural type informs the drainage approach and the tray specification, but it does not prevent installation. We assess joist direction and floor condition at the first visit.
Is frameless glass harder to maintain than a framed enclosure?
Not harder – but it requires more consistent maintenance in a hard water area like Reading. We specify a factory-applied nano-coating on all frameless panels and recommend a daily squeegee routine with a weekly mild-acid rinse. With this in place, frameless glass holds its finish well and remains the preferred choice for most homeowners.
What tile slip rating do I need for a walk-in shower floor?
A minimum R10 wet-area slip rating is the baseline we specify for walk-in shower floors. Some tile ranges that look strong aesthetically fall below this in testing. We check slip ratings at specification stage, before any materials are ordered, to avoid expensive revisions mid-project.
Will a walk-in shower add value to a Reading property?
Replacing an outdated shower cubicle or an over-bath shower with a well-specified walk-in installation registers positively with buyers in Berkshire’s current market. The caveat is quality of execution – a poorly tiled or inadequately waterproofed walk-in shower carries risk as well as visual appeal. Professional installation with proper waterproofing documentation is what converts a cosmetic upgrade into a durable asset.
Curious about timelines or the right specification for your bathroom? A free home visit costs nothing and tells you everything – we will look at the floor, the drainage route, and the layout before recommending anything. Book one on 07999 083028 or via our online form. We cover Reading, Wokingham, Bracknell, Newbury, Maidenhead and the wider Berkshire area.
