A wet room in Glasgow costs £4,500 to £7,000 for a compact budget installation, £7,000 to £11,000 for a typical mid-range room, and £11,000 to £18,000 for a large premium specification with underfloor heating and high-end tiling. The single biggest variable is not the tiles — it is the floor. Forming the fall and tanking the room properly accounts for a large share of the cost, and it is the part that must not be cut.
Here is what goes into that figure, where the money actually goes, and what to check before you accept a quote.
What a Wet Room Actually Involves
A wet room is a fully waterproofed bathroom with a level-access shower area draining into the floor. There is no tray and often no enclosure beyond a single glass screen. Getting there means five stages of work:
- Strip out the existing bathroom back to the substrate.
- Form the fall — either a pre-formed sloped former set into the floor, or a screed graded towards a linear or centre drain.
- Tank the room — a continuous waterproof membrane across the floor and up the walls, with sealed corners, pipe collars and drain flange.
- First fix plumbing and electrics, including the drain, shower valve and any underfloor heating mat.
- Tile, grout, seal and second fix the sanitaryware, screen and controls.
Wet Room Cost Breakdown in Glasgow (2026)
| Element | Typical cost |
|---|---|
| Strip out and disposal | £400 – £800 |
| Former or graded screed and drain | £600 – £1,400 |
| Tanking system, installed | £500 – £1,200 |
| Plumbing first and second fix | £900 – £1,800 |
| Electrics (lighting, extractor, shower circuit) | £400 – £900 |
| Tiling, labour and materials | £1,200 – £4,500 |
| Sanitaryware, screen, brassware | £800 – £3,500 |
| Electric underfloor heating (optional) | £450 – £1,100 |
Typical all-in prices
| Specification | All-in Glasgow price (2026) |
|---|---|
| Compact wet room, budget finishes | £4,500 – £7,000 |
| Standard room, mid-range specification | £7,000 – £11,000 |
| Large or premium, with underfloor heating | £11,000 – £18,000 |
| Accessible or adapted wet room | £6,000 – £12,000 |
What Drives the Price Up or Down
- Floor construction. A suspended timber floor needs joists notching and a former bedded in. A concrete floor can be cored and screeded. Timber costs more and takes longer.
- Drain position. Moving the waste run is the expensive part, especially on an upper floor where fall is tight.
- Room size and tile format. Large-format tiles look better and cost more to cut and lay flat; mosaics in a fall area are slower still.
- Water pressure. A gravity-fed tenement flat often needs a pump or a system change before a decent shower is possible.
- Accessibility requirements. Grab rails, shower seats and wider door openings add cost but may attract local authority adaptation funding.
Glasgow-Specific Considerations
Upper-floor tenement flats are where wet rooms need the most care. Fall has to be created within a limited floor depth, and the consequences of a tanking failure land on the neighbour below rather than you. We will not install a wet room over an occupied flat without a fully bonded tanking system and a witnessed flood test before tiling — it is the only way to know the membrane is sound.
Solid sandstone walls also need attention. Tanking membranes bond to a stable substrate, so lath and plaster or blown render must be replaced with tile backer board first. That is a cost some quotes leave out and discover halfway through. Ventilation matters too: Glasgow’s climate means a wet room without an adequate extractor will develop mould whatever the tiling looks like.
Property type across East Kilbride, Paisley and Rutherglen changes the numbers as well — a ground-floor concrete slab in a 1970s semi is a far simpler job than a second-floor conversion.
What to Check Before Accepting a Quote
- Which tanking system is specified, by name, and whether the installer is trained on it.
- Whether a flood test is included before tiling.
- Whether the quote covers making good the substrate, or assumes it is sound.
- Extractor specification and where it discharges.
- Who is doing the electrics and under which competent person scheme.
- Guarantee terms on the waterproofing, in writing, separate from the tiling.
If a quote is markedly cheaper than the others, the tanking or the substrate work is usually where the difference has come from. Citizens Advice explains what a written contract should contain before you pay a deposit.
Why Choose a Gas Safe Certified Engineer?
A wet room usually touches the heating system — a radiator moved or removed, a towel rail added, sometimes a boiler or cylinder that cannot support the new shower. A registered Gas Safe engineer can alter the central heating, upgrade the hot water side and recommission the appliance legally, which a tiler cannot. Precision Renovators run wet room work as part of our full bathroom renovation service, and every gas engineer’s card can be checked on the Gas Safe Register.
You may also like our guides on the bathroom renovation checklist and electric underfloor heating for bathrooms.
Frequently Asked Questions
How much is a wet room in Glasgow?
£4,500 to £7,000 for a compact budget room, £7,000 to £11,000 mid-range, and £11,000 to £18,000 for large or premium specifications. Accessible adaptations typically fall between £6,000 and £12,000.
How long does installation take?
Usually two to three weeks for a standard room, including drying time for screed and tanking. Rushing those stages is the most common cause of failure.
Can you fit a wet room in a tenement flat?
Yes, and we do regularly. Floor depth and drain fall are the constraints, and we always flood test before tiling when there is a flat below.
Will a wet room leak?
Not if the tanking is continuous, correctly detailed at corners and pipe penetrations, and tested before tiling. Almost every wet room failure we are called to repair traces back to a skipped or partial membrane.
Does a wet room add value?
A well-executed one generally helps, particularly in flats where a second bathroom is impossible. A poorly waterproofed one is a liability at survey, so the quality of the work matters more than the fact of it.
Do I need planning permission?
Not normally for an internal bathroom conversion, though building standards apply to drainage, ventilation and electrics. Listed buildings and some conservation areas have extra requirements.
Ready to Get Started?
Precision Renovators are Gas Safe certified plumbing, heating and bathroom specialists working across Glasgow. We survey before we price, specify the tanking system in writing, flood test before tiling, and guarantee the waterproofing. Browse our services or see our projects.
Get a Free Quote — or call and WhatsApp us on 07495 816227.
