Mineral wool EWI · Hertfordshire
Mineral wool external wall insulation in Borehamwood
If you're planning mineral wool external wall insulation in Borehamwood, start with a free survey: we measure, check the walls and confirm planning and building control for your address. On blocks and taller buildings in Borehamwood, mineral wool is the default because of the fire guidance for external walls.
- Free survey in WD6 and nearby
- Guide price from £125 per m² + scaffold, 0% VAT
- Fixed written price before work starts
Free survey in Borehamwood
Postcode, service and a phone number is all we need.
What the job covers
- Better sound reduction than foam boards
- Finished in mineral or silicone render, or brick slip
- Heavier than EPS, so more fixings and careful handling
- Used on blocks of flats and buildings with storeys above 11m
Homes and walls in Borehamwood
Surveys in Borehamwood also cover the surrounding WD6 district and towns such as Barnet and Potters Bar. Borehamwood sits around 5 miles from Watford. The East of England has a mix of post-war estates, inter-war semis and older solid brick and flint cottages, with some system-built council homes on post-war estates.
Much of Hertfordshire 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 Borehamwood can suit a vapour-open mineral wool build-up better than foam; the survey checks the wall first.
- Postcode district
- WD6
- County or area
- Hertfordshire
- Nation
- England
- Nearby
- Barnet, Potters Bar, Watford, Finchley
Permissions in England
Planning in Borehamwood 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.
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 Borehamwood
| 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.
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.
Mineral wool EWI in Borehamwood: questions
Does mineral wool get wet?
It is water-repellent and protected by the render system. Like any insulation it must not be left exposed to rain during installation, so boards are covered and work stops in wet weather.
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.
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.
Do you cover Borehamwood?
Yes — we survey and quote mineral wool external wall insulation in Borehamwood (WD6) and nearby Barnet, Potters Bar and Watford, with a fixed written price before any work starts.