Non-traditional houses · Hertfordshire
Non-traditional and concrete house insulation in Stevenage
If you're planning non-traditional house insulation in Stevenage, start with a free survey: we measure, check the walls and confirm planning and building control for your address. For concrete houses in Stevenage, we report any visible spalling or cracking before quoting the insulation, not after.
- Free survey in SG1 and nearby
- Guide price from £120 per m² + scaffold, 0% VAT
- Fixed written price before work starts
Free survey in Stevenage
Postcode, service and a phone number is all we need.
What's included
- The survey identifies the construction type before anything is specified
- EWI is not a structural repair for PRC houses designated defective
- EWI improves comfort and can renew a tired concrete exterior
- Fixing design depends on the panel or frame behind the wall
Local considerations in Stevenage
We cover Stevenage and nearby Hitchin, Letchworth Garden City and Welwyn Garden City. Stevenage sits around 19 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.
Where a home in Stevenage is system-built, the first job is confirming the construction type.
- Postcode district
- SG1
- County or area
- Hertfordshire
- Nation
- England
- Nearby
- Hitchin, Letchworth Garden City, Welwyn Garden City, Harpenden
Approvals in England
Before quoting in Stevenage, we check whether the property is in a conservation area, under an Article 4 direction or listed, because that decides whether changing the outside needs planning permission.
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 do I know if my house is non-traditional?
Clues include concrete panels or posts visible at corners, a smooth concrete or rendered finish on houses of a 1940s–1960s estate, steel sheeting on the upper storey, or a mortgage valuation that mentioned the construction type. Common types include Wimpey no-fines (poured concrete), Airey and Cornish Unit (precast reinforced concrete), Reema, Orlit and BISF (steel frame). We identify the type during the survey.
Non-traditional and concrete house insulation prices in Stevenage
| Item | Guide price | Notes |
|---|---|---|
| EWI on concrete or steel-framed walls | £120–£180 per m²0% VAT | Includes extra preparation |
| Semi-detached, full house | £11,400–£21,2000% VAT | 80–100 m² of wall, including scaffold |
| Concrete repairs found at survey | Priced separately | Only where needed |
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
Get a guide price
Try the online quote tool for a ballpark figure.
Book the survey
A visit at a time that suits you.
Agree the quote
Nothing starts until you've signed the written price.
We do the work
Planned around weather, with you kept informed.
Non-traditional houses in Stevenage: questions
Will EWI make my house mortgageable?
It can make a house more attractive and better insulated, but it does not replace a certified structural repair where a lender requires one. Ask your lender before relying on it.
What if my neighbour isn't insulating?
We finish the system neatly at the boundary with a closing detail so the neighbouring house isn't affected and can be joined later.
Can you insulate a Wimpey no-fines house?
Yes. No-fines houses have solid poured-concrete walls with no cavity, so EWI is the usual route. The survey checks the concrete condition first.
Do you cover Stevenage?
Yes — we survey and quote non-traditional house insulation in Stevenage (SG1) and nearby Hitchin, Letchworth Garden City and Welwyn Garden City, with a fixed written price before any work starts.