Wandsworth, Greater London
External Wall Insulation in Wandsworth
EWI systems that insulate solid walls externally and finish them in a warranted render topcoat.
If you are weighing up external wall insulation in Wandsworth, the starting point is what your walls are actually built from.
The prevailing picture in Greater London is Victorian and Edwardian terraces, interwar suburban semis and high-density modern development. That means solid-wall Victorian terraces, party-wall constraints and heavy atmospheric soiling comes up more here than almost anywhere else.
With a drier urban climate with a pronounced heat-island effect, specification matters more in this part of the country than a national price list suggests. Atmospheric pollution soils render faster in london than anywhere else in the uk, which is why self-cleaning silicone finishes are specified so heavily here.
When external wall insulation is the right call. Choose EWI on solid-wall, no-fines or non-traditional construction where you want a genuine thermal upgrade rather than just a new finish.
Guide price in Wandsworth
| Guide price | £135–£210 per m² |
|---|---|
| Applied thickness | 50-150mm insulation plus render system |
| Guarantee | 25 years |
Indicative only. The guide-price tool gives a range for your property; the survey gives the fixed price.
What the job includes
- EPS, mineral wool and phenolic boards
- 50mm to 150mm thicknesses
- Mechanical and adhesive fixing
- Reinforced basecoat with mesh
- Silicone or acrylic topcoat
- Window and door reveal detailing
If a cheaper specification would do the job, we will say so. If it would not, we will tell you why.
Also covering near Wandsworth
External Wall Insulation in Wandsworth
Tell us about the property and we will call you back to arrange a survey.
What happens next
Four steps from enquiry to finished wall
Free survey
We visit, test the substrate, measure up and identify what caused any existing failure.
Written quote
An itemised fixed price with the system named, materials specified and scaffold included.
Booked in
An agreed start date, scaffold arranged, and a clear run of days set aside for your job.
Finished and guaranteed
Site cleared, scaffold struck, guarantee documents and system warranty issued.
FAQs
External Wall Insulation in Wandsworth
What areas do you cover?
We work UK-wide, with teams across England, Scotland, Wales and Northern Ireland. If we are not the right firm for your location we will tell you rather than waste your time.
How much does external wall insulation save?
On a typical uninsulated solid-wall semi it commonly cuts wall heat loss substantially and makes the biggest single difference to comfort. Actual savings depend on the existing construction, heating system and how you use the house.
Do I need planning permission for EWI?
Often not on a standard house, but you will if it is listed, in a conservation area, or if it alters the appearance significantly. We advise before starting.
How much does rendering cost?
It is priced by the square metre and depends on the system, the condition of the walls and access. Our guide-price tool gives an indicative range in about a minute, and the survey turns that into a fixed written quote.
Do you offer a guarantee?
Yes. Every job carries our workmanship guarantee, and where a full manufacturer-specified system is installed you also get the system warranty on top.
Free survey in Wandsworth
We will confirm whether external wall insulation suits your walls before quoting a price.