Silicone render · Greater London
Silicone render in Harrow
If you're planning silicone render in Harrow, start with a free survey: we measure, check the walls and confirm planning and building control for your address. On tree-shaded or north-facing walls in Harrow, silicone's water repellence helps it stay cleaner for longer.
- Free survey in HA2 and nearby
- Guide price from £66 per m² + scaffold, inc VAT
- Fixed written price before work starts
Free survey in Harrow
Postcode, service and a phone number is all we need.
What's included
- Water-repellent surface that dries quickly after rain
- Vapour-open, so walls can still breathe
- Can also go straight onto prepared masonry
- Used as the finish on most EWI systems
Homes and walls in Harrow
We cover Harrow and nearby Wembley, Northolt and Greenford. 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 Harrow, either on its own or over insulation.
- Postcode district
- HA2
- County or area
- Greater London
- Nation
- England
- Nearby
- Wembley, Northolt, Greenford, Ruislip
England: planning and regulations
Planning in Harrow follows England's national rules: similar-looking finishes on houses are usually permitted, while flats, commercial premises, conservation areas and streets under an Article 4 direction need an application.
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.
How is silicone render applied?
On masonry, the wall is prepared and any loose material removed. A base coat with glass-fibre mesh is applied over the whole wall to resist cracking, followed by a primer and the silicone finish, trowelled to its grain size. On EWI, the same base coat, primer and finish go over the insulation boards.
Silicone render prices in Harrow
| 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 Harrow: questions
Can I paint silicone render later?
Yes, with a compatible silicone paint, though through-coloured render rarely needs it.
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.
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.
Do you cover Harrow?
Yes — we survey and quote silicone render in Harrow (HA2) and nearby Wembley, Northolt and Greenford, with a fixed written price before any work starts.