Dartford, Kent
External Wall Insulation in Dartford
EWI systems that insulate solid walls externally and finish them in a warranted render topcoat.
Our external wall insulation work in Dartford starts with a free survey, because guessing at a render specification is how jobs go wrong.
Kent is characterised by ragstone and flint cottages, oast houses, Victorian terraces and coastal housing, with coastal weathering at Margate and Dover, lime work on ragstone the recurring theme on the properties we survey.
Dartford sits in a part of the UK that gets drier than average inland, exposed on the coast — worth factoring into any render decision. Kentish ragstone is porous and traditionally lime-rendered, while the north kent coast takes some of the most persistent easterly exposure in the south east.
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 Dartford
| 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
Every quote follows a free survey — no estimates over the phone, because we cannot see your walls from here.
Also covering near Dartford
External Wall Insulation in Dartford
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 Dartford
Can you render over existing render?
Sometimes, if the existing coat is completely sound and well-bonded. We hammer-test it first. Anything hollow has to come off, because covering failure just hides it.
Are you insured?
Yes — full public liability cover, and we can send the certificate before we start. We are happy to provide RAMS for commercial and contractor work.
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.
Free survey in Dartford
We will confirm whether external wall insulation suits your walls before quoting a price.