Merthyr Tydfil, Mid Glamorgan
External Wall Insulation in Merthyr Tydfil
EWI systems that insulate solid walls externally and finish them in a warranted render topcoat.
We carry out external wall insulation across Merthyr Tydfil and the surrounding Mid Glamorgan area throughout the year.
The prevailing picture in Mid Glamorgan is valley terraces, former colliery housing and modern estates. That means pebbledash and cement render failure on valley terraces comes up more here than almost anywhere else.
With high rainfall in sheltered but damp valley locations, specification matters more in this part of the country than a national price list suggests. Much of the terraced stock was rendered in cement during the 1960s and 70s and is now failing en masse across the valleys.
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 Merthyr Tydfil
| 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
We will survey the property, tell you what the walls actually need, and put it in writing with a fixed price.
Also covering near Merthyr Tydfil
External Wall Insulation in Merthyr Tydfil
Tell us about the property and we will call you back to arrange a survey.
Other services in Merthyr Tydfil
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 Merthyr Tydfil
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.
What time of year is best for rendering?
Spring through autumn is ideal. Render should not be applied in frost or in very hot direct sun, so winter work needs protection and settled conditions.
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.
Free survey in Merthyr Tydfil
We will confirm whether external wall insulation suits your walls before quoting a price.