EPS insulation · Greater London
EPS external wall insulation in Isleworth
If you're planning EPS external wall insulation in Isleworth, start with a free survey: we measure, check the walls and confirm planning and building control for your address. Where eaves are shallow on a house in Isleworth, grey EPS can sometimes avoid the cost of extending the roofline.
- Free survey in TW7 and nearby
- Guide price from £105 per m² + scaffold, 0% VAT
- Fixed written price before work starts
Free survey in Isleworth
Postcode, service and a phone number is all we need.
What's included
- Light boards mean fewer fixings and a faster install
- Finished in silicone, acrylic, mineral render or brick slip
- Used on low-rise houses; combustible, so not for taller buildings
- Easy to shape around bays, arches and reveals
Isleworth: walls, weather and approvals
Surveys in Isleworth also cover the surrounding TW7 district and towns such as Hounslow and Heston. 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.
EPS is a common choice for two-storey houses, mainly on cost and weight, and we price it alongside mineral wool for homes in Isleworth.
- Postcode district
- TW7
- County or area
- Greater London
- Nation
- England
- Nearby
- Hounslow, Heston, Richmond, Southall
England: planning and regulations
For a house in Isleworth, 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.
How thick does the board need to be?
On a 225mm solid brick wall, around 90mm of grey EPS or 100–110mm of white EPS typically gets close to 0.30 W/m²K. Stone walls, concrete panels and hollow-block walls start from different points, so the system supplier's calculation for your wall sets the final thickness.
EPS external wall insulation prices in Isleworth
| Item | Guide price | Notes |
|---|---|---|
| EPS + silicone render | £105–£145 per m²0% VAT | Excluding scaffold |
| Grey EPS uplift | +£4–£8 per m²0% VAT | Thinner board for the same U-value |
| Bungalow, full house | £6,700–£12,8000% VAT | 55–75 m² of wall, including scaffold |
Confirmed by a fixed written quote after survey. 0% VAT: installing insulation in a home is zero-rated until 31 March 2027, so these figures are the total; 5% applies from 1 April 2027.
What happens next
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.
EPS insulation in Isleworth: questions
Is EPS insulation safe on a house?
EPS is used inside render systems that are fire-tested as a whole. On low-rise houses it is widely used. On taller buildings, or where guidance calls for non-combustible materials, mineral wool systems are specified instead.
White or grey EPS?
Grey graphite EPS insulates better per millimetre, so it is the pick where space is tight at the eaves or around windows. White EPS is slightly cheaper and works well where the extra thickness isn't a problem.
How long does EPS last on a wall?
The board itself doesn't degrade when protected by the render system. Service life depends on the render, sealants and detailing, typically 25–30 years or more with maintenance.
Do you cover Isleworth?
Yes — we survey and quote EPS external wall insulation in Isleworth (TW7) and nearby Hounslow, Heston and Richmond, with a fixed written price before any work starts.