EPS insulation · England
EPS external wall insulation in West Sussex
Planning EPS external wall insulation anywhere in West Sussex? We cover towns including Crawley and Worthing, and check planning and building control for each address. EPS is a common choice for two-storey houses, mainly on cost and weight, and we price it alongside mineral wool for homes in West Sussex.
- Free survey and fixed written price
- Guide price from £105 per m² + scaffold, 0% VAT
- Planning and building control checked for England
Free survey in West Sussex
Tell us the postcode and what you need.
Part of every quote
- Easy to shape around bays, arches and reveals
- Grey graphite EPS reaches a given U-value with a thinner board
- Light boards mean fewer fixings and a faster install
- Used on low-rise houses; combustible, so not for taller buildings
- Finished in silicone, acrylic, mineral render or brick slip
Local considerations in West Sussex
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.
Exposure to wind-driven rain varies across West Sussex: sheltered town streets fare better than walls on high ground or facing the prevailing weather, and the render, beads and cill details are chosen with that in mind.
We compare EPS against mineral wool for each West Sussex enquiry rather than assuming one board suits every wall.
- Nation
- England
- Region
- South East
- Towns covered
- Crawley, Worthing, Bognor Regis, Littlehampton, Horsham, Haywards Heath, Chichester, Burgess Hill…
- Guide price
- From £105 per m² + scaffold · 0% VAT
Planning and building control in England
For houses, external wall insulation and render are often permitted development where the finish looks similar to the existing walls. Planning permission is usually needed in conservation areas, National Parks, National Landscapes, the Broads and World Heritage Sites (where cladding a house in stone, artificial stone, pebble dash, render, timber, plastic or tiles isn't permitted development), for flats and maisonettes, for commercial buildings, under an Article 4 direction, or where the look changes noticeably. Listed buildings need listed building consent.
Renovating more than half of a wall's area — insulating it, or stripping and re-rendering it — or more than a quarter of the building's whole external envelope brings in the energy requirements of Part L, so building control needs to be involved and the wall should reach about 0.30 W/m²K where that's technically, functionally and economically 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 West Sussex
| 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.
From enquiry to finished wall
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.
EPS insulation in West Sussex: questions
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.
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.
Do you cover all of West Sussex?
Yes. We survey and quote EPS external wall insulation across West Sussex, including Crawley, Worthing, Bognor Regis, Littlehampton, Horsham.
Do I need planning permission in England?
For houses, external wall insulation and render are often permitted development where the finish looks similar to the existing walls. We check your address before quoting.