Solid wall insulation · Gwent
Solid wall insulation in Newport (Gwent)
We quote solid wall insulation for homes in Newport (Gwent, NP20) and nearby Risca and Cwmbran, with guide prices online and a free survey to fix the price. On solid-walled houses in Newport (Gwent), the gable or the most weather-exposed wall is often the place to start.
- Free survey in NP20 and nearby
- Guide price from £75 per m² + scaffold, 0% VAT
- Fixed written price before work starts
Free survey in Newport (Gwent)
Postcode, service and a phone number is all we need.
What the job covers
- Internal insulation suits single rooms or where the outside can't change
- External insulation keeps room sizes and treats cold bridges well
- Both can be done in stages, elevation by elevation or room by room
- Solid walls can lose heat roughly twice as fast as an insulated cavity wall
Local considerations in Newport (Gwent)
We also cover Risca and Cwmbran, close to Newport (Gwent). South Wales has long runs of solid-wall valley terraces, Victorian and Edwardian town housing and post-war council estates.
Exposure to wind-driven rain varies across Gwent: sheltered town streets fare better than walls on high ground or facing the prevailing weather, and the render, beads and cill details are chosen with that in mind.
For Newport (Gwent) homeowners weighing external against internal insulation, the survey sets out both with prices.
- Postcode district
- NP20
- County or area
- Gwent
- Nation
- Wales
- Nearby
- Risca, Cwmbran, Pontypool, Caerphilly
Wales: planning and regulations
Householder rules in Wales are similar to England's: in Newport (Gwent), a similar-looking finish on a house is often permitted, but conservation areas, flats and listed buildings need permission or consent.
In Wales, insulating or re-rendering more than half of a wall's area is treated as renovating a thermal element under Approved Document L (Wales), so building control is involved before work starts.
What does solid wall insulation cost?
External systems run at roughly £105–£210 per m² of wall depending on the board and finish. Internal insulation is roughly £75–£130 per m², plus the cost of moving radiators, sockets and kitchen units.
Solid wall insulation prices in Newport (Gwent)
| Item | Guide price | Notes |
|---|---|---|
| External (EWI) | £105–£210 per m²0% VAT | By board and finish |
| Internal (IWI) | £75–£130 per m²0% VAT | Plus making good |
| Survey and written recommendation | Free with a quote |
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.
From enquiry to finished wall
Tell us about the property
Use the quote tool or form, or call. Photos help.
Free survey
We measure, check the walls and confirm approvals.
Fixed written quote
System, details, access, exclusions and VAT in writing.
Installation
Scheduled for suitable weather, with a clear programme.
Solid wall insulation in Newport (Gwent): questions
Does solid wall insulation cause condensation?
It can if detailed poorly, particularly internally. A condensation risk check for the proposed build-up and careful detailing at joists, reveals and corners avoid it.
Is solid wall insulation worth it?
For many solid-walled homes it's one of the biggest single improvements to comfort, because the walls are often the largest heat-loss area. Savings depend on the home and heating, so we don't promise a figure.
Can I do one wall at a time?
Yes. Many owners start with the coldest or most exposed elevation, often a gable end.
Do you cover Newport (Gwent)?
Yes — we survey and quote solid wall insulation in Newport (Gwent, NP20) and nearby Risca, Cwmbran and Pontypool, with a fixed written price before any work starts.