Wales
External Wall Insulation in Powys
EWI systems that insulate solid walls externally and finish them in a warranted render topcoat.
We carry out external wall insulation across Powys and the surrounding Powys area throughout the year.
Powys is characterised by stone farmhouses, timber framing and rural cottages, with lime render on rural stone and timber-frame properties the recurring theme on the properties we survey. Local conditions bring high rainfall with exposed upland conditions, and that has a direct bearing on which systems are worth specifying.
Local factor. Powys is overwhelmingly rural, solid-wall and upland, which makes breathable lime the standard specification rather than a heritage exception.
Is external wall insulation right for a Powys property?
Choose EWI on solid-wall, no-fines or non-traditional construction where you want a genuine thermal upgrade rather than just a new finish.
That decision gets made at the survey, not on the phone. We will tell you plainly if a different system would serve the building better — including when a cheaper one would.
Guide price and specification
| Guide price | £135–£210 per m² |
|---|---|
| Applied thickness | 50-150mm insulation plus render system |
| Curing / drying | Staged, 7-10 days total |
| Guarantee | 25 years |
| Coverage | All of Powys — 10 towns and cities |
Indicative only, excluding scaffold, stripping and repairs. Try the guide-price tool for a range based on your property.
What is included
- 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
- Eaves and verge extensions
- Fire-rated mineral wool options
External Wall Insulation across Powys
External Wall Insulation in Powys
Tell us about the property and we will call you back to arrange a survey.
Other services in Powys
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 Powys — questions
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.
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.
External Wall Insulation quotes across Powys
Free survey, honest advice on whether this is the right system, and a fixed written price.