Silicone render · Greater London
Silicone render in Hounslow
Looking for silicone render in Hounslow? We survey homes across Hounslow and the TW3 area, then give you a fixed written price before any work starts. If you're re-rendering in Hounslow, we'll show you what adding insulation under the silicone would cost at the same time.
- Free survey in TW3 and nearby
- Guide price from £66 per m² + scaffold, inc VAT
- Fixed written price before work starts
Free survey in Hounslow
Postcode, service and a phone number is all we need.
Included as standard
- Used as the finish on most EWI systems
- Vapour-open, so walls can still breathe
- Fine, even grain from about 1–2mm
- Can also go straight onto prepared masonry

Hounslow: walls, weather and approvals
As well as Hounslow itself, we quote in Isleworth, Heston and Richmond. 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.
Silicone suits most rendering jobs in Hounslow, either on its own or over insulation.
- Postcode district
- TW3
- County or area
- Greater London
- Nation
- England
- Nearby
- Isleworth, Heston, Richmond, Hanworth
Permissions in England
For a house in Hounslow, external insulation or render is often permitted development if it looks similar to the existing walls; conservation areas, flats, commercial buildings and listed buildings need permission or consent, so we check your address first.
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.
Is silicone render maintenance-free?
Not quite. It stays cleaner than most renders because water runs off and dries quickly, but north-facing or tree-shaded walls can still gather algae. A gentle biocide wash every few years keeps it looking new. Pressure washing is avoided because it can damage the surface.
Silicone render prices in Hounslow
| Item | Guide price | Notes |
|---|---|---|
| Silicone render on masonry (with base coat + mesh) | £66–£102 per m²inc VAT | Excluding scaffold |
| Front and side of a semi (≈60 m²) | £3,960–£6,120inc VAT | Plus scaffold |
| As the finish on EWI | Included in EWI rates |
Confirmed by a fixed written quote after survey. Prices include VAT at 20%.
How it works
Tell us about the property
Use the quote tool or form, or call. Photos help.
Free survey
We measure, check the walls and confirm approvals.
Fixed written quote
System, details, access, exclusions and VAT in writing.
Installation
Scheduled for suitable weather, with a clear programme.
Silicone render in Hounslow: questions
How long does silicone render take to dry?
It's touch-dry within hours but needs dry weather above about 5°C for the first day or two to cure properly.
Can silicone render go over old render?
If the old render is sound and well bonded, often yes after cleaning and priming. Hollow or cracked areas are cut out and repaired first.
Does silicone render crack?
The mesh-reinforced base coat and the render's flexibility make cracking much less likely than with sand and cement, but structural movement in the wall can still show through.
Do you cover Hounslow?
Yes — we survey and quote silicone render in Hounslow (TW3) and nearby Isleworth, Heston and Richmond, with a fixed written price before any work starts.