Portstewart, Londonderry
Basement Tanking in Portstewart
Cementitious tanking and cavity drain systems for basements, cellars and below-ground rooms.
Basement Tanking in Portstewart is work we take on regularly, and the Londonderry housing stock is a big part of why.
Londonderry is characterised by Victorian terraces, harled cottages and exposed north-coast housing, with driving rain and salt on north-coast properties the recurring theme on the properties we survey.
Portstewart sits in a part of the UK that gets wet with severe Atlantic exposure on the north coast — worth factoring into any render decision. The north coast around portstewart takes direct atlantic weather, and dash finishes substantially outperform smooth render there.
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 Portstewart
| 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
We will survey the property, tell you what the walls actually need, and put it in writing with a fixed price.
Also covering near Portstewart
Basement Tanking in Portstewart
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 Portstewart
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.
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.
Free survey in Portstewart
We will confirm whether basement tanking suits your walls before quoting a price.