Mineral wool EWI · Greater London
Mineral wool external wall insulation in Hounslow
Looking for mineral wool external wall insulation in Hounslow? We survey homes across Hounslow and the TW3 area, then give you a fixed written price before any work starts. For homes in Hounslow near busy roads, mineral wool's sound reduction can be a reason to choose it.
- Free survey in TW3 and nearby
- Guide price from £125 per m² + scaffold, 0% VAT
- Fixed written price before work starts
Free survey in Hounslow
Postcode, service and a phone number is all we need.
Included as standard
- Heavier than EPS, so more fixings and careful handling
- Used on blocks of flats and buildings with storeys above 11m
- Vapour-open, so moisture in solid walls can dry outwards
- Non-combustible board (typically Euroclass A1 or A2-s1,d0 as part of the system)
Hounslow: walls, weather and approvals
We also cover Isleworth and Heston, close to Hounslow. 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.
Older solid-walled homes in Hounslow can suit a vapour-open mineral wool build-up better than foam; the survey checks the wall first.
- Postcode district
- TW3
- County or area
- Greater London
- Nation
- England
- Nearby
- Isleworth, Heston, Richmond, Hanworth
Permissions in England
Planning in Hounslow 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.
Building control applies once more than half of a wall is insulated or re-rendered, or more than a quarter of the whole building envelope, and your written quote says how that's handled.
On residential buildings with a storey 11 metres or more above ground, guidance points to non-combustible external wall materials, and combustible materials are banned in relevant buildings 18 metres and over, so we specify mineral wool systems there.
What about noise?
Dense mineral wool adds mass and absorbs sound, so homes beside main roads or railways often notice a quieter interior, particularly where windows are also upgraded. The improvement depends on the whole wall and windows, so we don't quote decibel figures without testing.
Mineral wool external wall insulation prices in Hounslow
| Item | Guide price | Notes |
|---|---|---|
| Mineral wool + mineral or silicone render | £125–£170 per m²0% VAT | Excluding scaffold |
| Mineral wool + brick slip | £195–£260 per m²0% VAT | Heavier slip systems need extra fixings |
| Three-bed semi, full house | £11,800–£20,2000% VAT | 80–100 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
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.
Mineral wool EWI in Hounslow: questions
Can mineral wool EWI have a brick finish?
Yes. Brick slips can be bonded over mineral wool systems designed for them, with additional fixings for the extra weight.
Is mineral wool better than EPS?
Not always better — different. Mineral wool wins on fire performance, breathability and acoustics; EPS wins on cost, weight and thinner boards for the same U-value. The wall, the building height and your priorities decide it.
Is mineral wool needed for a bungalow?
Rarely for fire reasons. It may still be chosen on a damp-prone solid wall where a vapour-open build-up is wanted.
Do you cover Hounslow?
Yes — we survey and quote mineral wool external wall insulation in Hounslow (TW3) and nearby Isleworth, Heston and Richmond, with a fixed written price before any work starts.