What does a wet room cost in South Glamorgan?
Our guide range in South Glamorgan is £5,600–£11,250 including VAT. Prices in South Glamorgan run at about 7% below the UK guide, based on Wales labour rates.
Compact
- Full tanking, porcelain tiles
Signature
- 4–7 m² room
Large or luxury
- Large-format or stone-effect tiles
Guide prices for South Glamorgan including VAT. Your itemised written quote after the free survey is the price that counts.
Which towns do we cover in South Glamorgan?
Supplies across most of South Glamorgan are moderately hard. A quick wipe of the glass and an easy-clean coating are worth having on a new shower in Cardiff. Hardness varies street by street, so check the figure for your postcode with your water supplier. For a wet room in a Cardiff flat, the first step is the lease, because freeholder consent is often needed before any work starts.
What the job includes
- A pre-formed floor former with a linear or centre drain, or a screed laid to fall
- A survey of the floor construction, the joist size and direction or the concrete slab, and the route to the soil stack
- Extractor fan and lighting by a qualified electrician, tested and certified, with underfloor heating if you choose it
- Full tanking of the floor and the shower walls, with sealed corners, pipe collars and a sealed drain connection
- Slip-resistant porcelain floor tiles and wall tiling
- Floor strengthening or a ply overlay on timber floors so the surface does not flex
Decisions to make first
Open or screened
A fully open shower with no glass only works in a larger room, with the basin, WC and towels well away from the spray.
Linear or centre drain
A linear drain along one wall lets the floor fall in a single direction, so large tiles can be laid without awkward cuts. A centre drain needs a four-way fall and suits smaller tiles or mosaic.
Screen size
A screen of 1200 mm or more keeps spray off the rest of the room in most layouts. In a very small wet room, expect the whole floor to get wet.
Former or screed
A pre-formed board gives a consistent fall and suits timber floors. A sand and cement screed suits concrete slabs and larger shower areas.
Rules that apply in Wales
A wet room inside an existing home does not need planning permission. In a flat, check the lease: freeholder consent is often needed, and both the leak risk and the sound insulation to the flat below matter. Electrics must meet BS 7671, with 30 mA RCD protection, at least IPX4 fittings in zone 1 up to 2.25 m above the shower floor, IPX5 where water jets are used, and no ordinary sockets within 3 m of zone 1.
In Wales, Part H covers new drainage and the Welsh Part F sets similar extract rates. The Welsh Part P makes more electrical work notifiable than in England, so the electrician should notify and certify the work.

