Solid wall insulation · Mid Glamorgan
Solid wall insulation in Maesteg
Quotes for solid wall insulation in Maesteg list the system, the detailing and the VAT position in writing, so you know exactly what's included. On solid-walled houses in Maesteg, the gable or the most weather-exposed wall is often the place to start.
- Free survey in CF34 and nearby
- Guide price from £75 per m² + scaffold, 0% VAT
- Fixed written price before work starts
Free survey in Maesteg
Postcode, service and a phone number is all we need.
What the job covers
- Solid walls can lose heat roughly twice as fast as an insulated cavity wall
- In England and Wales, Building Regulations apply when more than half of a wall is treated
- Both can be done in stages, elevation by elevation or room by room
- External insulation keeps room sizes and treats cold bridges well

Local considerations in Maesteg
We also cover Port Talbot and Briton Ferry, close to Maesteg. Maesteg sits around 10 miles from Rhondda. South Wales has long runs of solid-wall valley terraces, Victorian and Edwardian town housing and post-war council estates.
Parts of Mid Glamorgan fall in the higher wind-driven rain exposure bands, especially coastal and upland sites, so render specification, movement joints and detailing at cills, verges and the base of the wall matter more than usual.
For Maesteg homeowners weighing external against internal insulation, the survey sets out both with prices.
- Postcode district
- CF34
- County or area
- Mid Glamorgan
- Nation
- Wales
- Nearby
- Port Talbot, Briton Ferry, Neath, Bridgend
Wales: planning and regulations
Householder rules in Wales are similar to England's: in Maesteg, 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.
How can I tell if my walls are solid?
Measure the wall thickness at a window or door: about 225mm (9 inches) of brick usually means solid, while 260mm or more often means a cavity. On exposed brick, a pattern with bricks laid end-on (headers) every few courses points to solid construction. Stone walls are usually solid regardless of thickness. Age is a strong clue too — most homes built before the 1920s are solid-walled.
Solid wall insulation prices in Maesteg
| 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.
How it works
Enquiry
Send your postcode and a few details.
Measured survey
Walls, damp, eaves, cills and services recorded.
Written price
A fixed price with the specification attached.
Work and handover
Installed, inspected and documents handed over.
Solid wall insulation in Maesteg: 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.
Can I do one wall at a time?
Yes. Many owners start with the coldest or most exposed elevation, often a gable end.
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.
Do you cover Maesteg?
Yes — we survey and quote solid wall insulation in Maesteg (CF34) and nearby Port Talbot, Briton Ferry and Neath, with a fixed written price before any work starts.