Internal wall insulation · West Glamorgan
Internal wall insulation in Port Talbot
We quote internal wall insulation for homes in Port Talbot (SA13) and nearby Briton Ferry and Neath, with guide prices online and a free survey to fix the price. Where a property in Port Talbot is in a conservation area or the front elevation must stay unchanged, internal insulation is often the practical route.
- Free survey in SA13 and nearby
- Guide price from £75 per m² 0% VAT
- Fixed written price before work starts
Free survey in Port Talbot
Postcode, service and a phone number is all we need.
What's included
- Insulated plasterboard, stud wall or breathable systems
- Sockets, radiators, skirting and coving are moved and refitted
- Keeps the outside of the house exactly as it is
- Loses roughly 50–100mm per insulated wall
Local considerations in Port Talbot
We cover Port Talbot and nearby Briton Ferry, Neath and Maesteg. Port Talbot sits around 7 miles from Swansea. South Wales has long runs of solid-wall valley terraces, Victorian and Edwardian town housing and post-war council estates.
Parts of West 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 terraced homes in Port Talbot with attractive brick fronts, one approach is to insulate the front internally and the rear externally.
- Postcode district
- SA13
- County or area
- West Glamorgan
- Nation
- Wales
- Nearby
- Briton Ferry, Neath, Maesteg, Swansea
Approvals in Wales
Internal insulation rarely needs planning permission, but in England and Wales insulating or replastering more than half of a wall's area involves building control, and listed buildings need consent for internal changes that affect their character.
What are the risks with internal insulation?
Insulating inside makes the masonry colder, so moisture risk rises. Weak points are where floor joists bear into the wall, window reveals and corners. A condensation risk check for the build-up, a continuous vapour control layer where specified, and returning insulation into reveals deal with most of it.
Internal wall insulation prices in Port Talbot
| 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
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.
Internal wall insulation in Port Talbot: questions
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.
Can I stay in the house?
Yes, but each room is out of use while it's worked on, typically 3–5 days.
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 Port Talbot?
Yes — we survey and quote internal wall insulation in Port Talbot (SA13) and nearby Briton Ferry, Neath and Maesteg, with a fixed written price before any work starts.