Monocouche render · Greater London
Monocouche render in Carshalton
From Carshalton to Wallington, we price monocouche render after a measured survey — no guesswork, and no work starts until the price is agreed in writing. For Carshalton homeowners matching a new extension to an existing rendered house, we compare monocouche and silicone samples first.
- Free survey in SM5 and nearby
- Guide price from £54 per m² + scaffold, inc VAT
- Fixed written price before work starts
Free survey in Carshalton
Postcode, service and a phone number is all we need.
What you get
- Good for new blockwork and extensions
- Lower cost per m² than thin-coat systems on suitable walls
- Not the finish used over insulation boards
- Beads and movement joints control cracking

What we look for in Carshalton
Surveys in Carshalton also cover the surrounding SM5 district and towns such as Wallington and Sutton. London's housing includes a large stock of Victorian and Edwardian solid-wall terraces, inter-war semis and post-war blocks, and conservation areas cover many streets — so planning is often the first question for external work.
Much of Greater London sits in the lower wind-driven rain exposure bands, which keeps the choice of finishes wide — though hilltop, coastal and exposed gable walls can still need a tougher specification, so we check the actual site.
We plan monocouche in Carshalton for settled weather so each elevation can be finished in one go.
- Postcode district
- SM5
- County or area
- Greater London
- Nation
- England
- Nearby
- Wallington, Sutton, Mitcham, Morden
England: planning and regulations
Before quoting in Carshalton, we check whether the property is in a conservation area, under an Article 4 direction or listed, because that decides whether changing the outside needs planning permission.
Insulating or re-rendering more than half of a wall's area brings in Part L of the Building Regulations, so building control is notified and the wall is upgraded to about 0.30 W/m²K where practical.
Where is monocouche used?
Monocouche is best on new or sound blockwork and brickwork with consistent suction — extensions, new builds and garden walls. It's applied thicker than thin-coat renders and scraped once firm to reveal the texture.
Monocouche render prices in Carshalton
| Item | Guide price | Notes |
|---|---|---|
| Monocouche on blockwork | £54–£84 per m²inc VAT | Excluding scaffold |
| Single-storey extension | £2,395–£4,195inc VAT | Typical |
| Beads and movement joints | Included |
Confirmed by a fixed written quote after survey. Prices include VAT at 20%.
What happens next
Get a guide price
Try the online quote tool for a ballpark figure.
Book the survey
A visit at a time that suits you.
Agree the quote
Nothing starts until you've signed the written price.
We do the work
Planned around weather, with you kept informed.
Monocouche render in Carshalton: questions
Monocouche or silicone for an extension?
Both work on new blockwork. Silicone over a base coat costs a little more but tends to stay cleaner.
Is monocouche waterproof?
It's water-resistant and sheds rain, while still allowing some vapour through.
Does monocouche need painting?
No — it's through-coloured. Cleaning every few years keeps it looking fresh.
Do you cover Carshalton?
Yes — we survey and quote monocouche render in Carshalton (SM5) and nearby Wallington, Sutton and Mitcham, with a fixed written price before any work starts.