Swansea, West Glamorgan
Basement Tanking in Swansea
Cementitious tanking and cavity drain systems for basements, cellars and below-ground rooms.
Basement Tanking in Swansea is work we take on regularly, and the West Glamorgan housing stock is a big part of why.
Most of what we see around Swansea reflects the wider West Glamorgan pattern — Victorian terraces, industrial housing and exposed coastal properties, and driving rain on Gower and Swansea Bay elevations.
The area sees very high rainfall with strong coastal exposure, which is the single biggest factor in how long any render lasts here. Swansea is among the wettest cities in the uk, and render specifications that hold up in the midlands are routinely under-specified here.
When basement tanking is the right call. Choose tanking for cellar and basement conversions, persistently wet below-ground rooms, and any space you intend to make habitable.
Guide price in Swansea
| Guide price | £115–£195 per m² |
|---|---|
| Applied thickness | Multi-coat cementitious system |
| Guarantee | 20 years |
Indicative only. The guide-price tool gives a range for your property; the survey gives the fixed price.
What the job includes
- Cementitious tanking slurries
- Cavity drain membrane systems
- Sump and pump installation
- Type A and Type C waterproofing
- Fillets and junction detailing
- Withstands hydrostatic pressure
You get a written, itemised quotation after the survey, with the specification named so you can compare like for like.
Also covering near Swansea
Basement Tanking in Swansea
Tell us about the property and we will call you back to arrange a survey.
What happens next
Four steps from enquiry to finished wall
Free survey
We visit, test the substrate, measure up and identify what caused any existing failure.
Written quote
An itemised fixed price with the system named, materials specified and scaffold included.
Booked in
An agreed start date, scaffold arranged, and a clear run of days set aside for your job.
Finished and guaranteed
Site cleared, scaffold struck, guarantee documents and system warranty issued.
FAQs
Basement Tanking in Swansea
How long does basement tanking last?
A correctly designed and installed system carries a 20-year warranty. Type C systems need periodic pump servicing to maintain that.
How long does a rendering job take?
A typical three-bedroom semi is usually one to two weeks on site including scaffold, preparation, application and finishing. Weather, wall condition and the system chosen all move that.
Do I need planning permission to render my house?
Usually not on a standard house, but you will if the property is listed, in a conservation area, or if rendering would significantly change its appearance. We flag it at survey.
Will you need scaffolding?
For anything above single storey, yes — it is safer and produces a better finish than working off ladders or towers. Scaffold is included and itemised in the quote.
How long before I can paint new render?
Through-coloured systems need no painting at all. Sand and cement should cure for around 28 days before masonry paint goes anywhere near it.
Free survey in Swansea
We will confirm whether basement tanking suits your walls before quoting a price.