Caerphilly, Mid Glamorgan
Basement Tanking in Caerphilly
Cementitious tanking and cavity drain systems for basements, cellars and below-ground rooms.
Caerphilly property owners come to us for basement tanking for one of two reasons: something has failed, or the house looks tired.
The prevailing picture in Mid Glamorgan is valley terraces, former colliery housing and modern estates. That means pebbledash and cement render failure on valley terraces comes up more here than almost anywhere else.
Caerphilly sits in a part of the UK that gets high rainfall in sheltered but damp valley locations — worth factoring into any render decision. Much of the terraced stock was rendered in cement during the 1960s and 70s and is now failing en masse across the valleys.
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 Caerphilly
| 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 Caerphilly
Basement Tanking in Caerphilly
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 Caerphilly
What is the difference between Type A and Type C waterproofing?
Type A is a bonded barrier that keeps water out entirely. Type C accepts ingress, then drains and pumps it away behind a membrane. Type C is more forgiving of structural imperfections.
Does a tanked basement need a pump?
A Type C cavity drain system does — it relies on a sump and pump. A Type A barrier system does not, though a pump is sometimes added as a backup.
How much does rendering cost?
It is priced by the square metre and depends on the system, the condition of the walls and access. Our guide-price tool gives an indicative range in about a minute, and the survey turns that into a fixed written quote.
Do you offer a guarantee?
Yes. Every job carries our workmanship guarantee, and where a full manufacturer-specified system is installed you also get the system warranty on top.
What time of year is best for rendering?
Spring through autumn is ideal. Render should not be applied in frost or in very hot direct sun, so winter work needs protection and settled conditions.
Free survey in Caerphilly
We will confirm whether basement tanking suits your walls before quoting a price.