Trowbridge, Wiltshire
Basement Tanking in Trowbridge
Cementitious tanking and cavity drain systems for basements, cellars and below-ground rooms.
Trowbridge 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 Wiltshire is Bath and chalk stone cottages, Georgian townhouses and modern estates. That means lime render on chalk, clunch and Bath stone in conservation areas comes up more here than almost anywhere else.
With a moderate inland climate with exposed downland, specification matters more in this part of the country than a national price list suggests. Chalk and clunch are extremely soft and porous, and rendering them in cement causes the stone itself to break down behind the render.
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 Trowbridge
| 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
If a cheaper specification would do the job, we will say so. If it would not, we will tell you why.
Also covering near Trowbridge
Basement Tanking in Trowbridge
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 Trowbridge
Can you render over existing render?
Sometimes, if the existing coat is completely sound and well-bonded. We hammer-test it first. Anything hollow has to come off, because covering failure just hides it.
Are you insured?
Yes — full public liability cover, and we can send the certificate before we start. We are happy to provide RAMS for commercial and contractor work.
What areas do you cover?
We work UK-wide, with teams across England, Scotland, Wales and Northern Ireland. If we are not the right firm for your location we will tell you rather than waste your time.
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.
Free survey in Trowbridge
We will confirm whether basement tanking suits your walls before quoting a price.