Silicone render · Surrey
Silicone render in Egham
If you're planning silicone render in Egham, start with a free survey: we measure, check the walls and confirm planning and building control for your address. If you're re-rendering in Egham, we'll show you what adding insulation under the silicone would cost at the same time.
- Free survey in TW20 and nearby
- Guide price from £66 per m² + scaffold, inc VAT
- Fixed written price before work starts
Free survey in Egham
Postcode, service and a phone number is all we need.
What you get
- Water-repellent surface that dries quickly after rain
- Can also go straight onto prepared masonry
- Fine, even grain from about 1–2mm
- Vapour-open, so walls can still breathe

Local considerations in Egham
Surveys in Egham also cover the surrounding TW20 district and towns such as Staines and Ashford (Surrey). Egham sits around 8 miles from Woking. Homes across the South East range from inter-war semis and post-war estates, which are mostly cavity-walled, to older solid-walled cottages and Victorian town terraces.
Much of Surrey 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 Egham, either on its own or over insulation.
- Postcode district
- TW20
- County or area
- Surrey
- Nation
- England
- Nearby
- Staines, Ashford (Surrey), Windsor, Slough
Permissions in England
For a house in Egham, 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.
If the work covers more than half of a wall, or a quarter of the building's whole envelope, it counts as renovating a thermal element, with a target of about 0.30 W/m²K where feasible.
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 Egham
| 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%.
From enquiry to finished wall
Enquiry
Send your postcode and a few details.
Measured survey
Walls, damp, eaves, cills and services recorded.
Written price
A fixed price with the specification attached.
Work and handover
Installed, inspected and documents handed over.
Silicone render in Egham: questions
Can I paint silicone render later?
Yes, with a compatible silicone paint, though through-coloured render rarely needs it.
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.
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.
Do you cover Egham?
Yes — we survey and quote silicone render in Egham (TW20) and nearby Staines, Ashford (Surrey) and Windsor, with a fixed written price before any work starts.