Internal wall insulation · Mid Glamorgan
Internal wall insulation in Bridgend
Need internal wall insulation in Bridgend? Tell us about the property and we'll arrange a free survey and a written quote. Where a property in Bridgend is in a conservation area or the front elevation must stay unchanged, internal insulation is often the practical route.
- Free survey in CF31 and nearby
- Guide price from £75 per m² 0% VAT
- Fixed written price before work starts
Free survey in Bridgend
Postcode, service and a phone number is all we need.
Included as standard
- Loses roughly 50–100mm per insulated wall
- Keeps the outside of the house exactly as it is
- Insulated plasterboard, stud wall or breathable systems
- Needs careful detailing at floor joists, reveals and corners

Bridgend: walls, weather and approvals
Surveys in Bridgend also cover the surrounding CF31 district and towns such as Maesteg and Port Talbot. Bridgend sits around 12 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.
We plan internal insulation in Bridgend homes room by room so you keep the rest of the house usable.
- Postcode district
- CF31
- County or area
- Mid Glamorgan
- Nation
- Wales
- Nearby
- Maesteg, Port Talbot, Rhondda, Pontypridd
Permissions in Wales
Planning isn't usually involved with internal insulation. Building control is, once more than half of a wall is treated, and listed buildings need listed building consent.
Do I need Building Regulations approval?
Yes, in England and Wales once you insulate or replaster more than half of a wall's area (or more than a quarter of the building's whole envelope), it's treated as renovating a thermal element. The wall should reach about 0.30 W/m²K where practical, and building control needs to be involved.
Internal wall insulation prices in Bridgend
| Item | Guide price | Notes |
|---|---|---|
| Insulated plasterboard, supplied and skimmed | £75–£110 per m²0% VAT | |
| Insulated stud wall | £90–£130 per m²0% VAT | |
| Typical bedroom, one external wall | £1,795–£2,9950% VAT | Including making good |
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
Get a guide price
Try the online quote tool for a ballpark figure.
Book the survey
A visit at a time that suits you.
Agree the quote
Nothing starts until you've signed the written price.
We do the work
Planned around weather, with you kept informed.
Internal wall insulation in Bridgend: questions
How much room space will I lose?
Usually 50–100mm on each insulated wall, depending on the system.
Is internal insulation cheaper than external?
Per m² usually yes, but the cost of moving fittings and redecorating narrows the gap on whole-house jobs.
What happens to my radiators and sockets?
They're taken off and refitted on the new wall face. Electrical work is done by a qualified electrician.
Do you cover Bridgend?
Yes — we survey and quote internal wall insulation in Bridgend (CF31) and nearby Maesteg, Port Talbot and Rhondda, with a fixed written price before any work starts.