Internal wall insulation · Gwent
Internal wall insulation in Abergavenny
Homeowners and landlords in Abergavenny can get a free survey and a fixed written quote for internal wall insulation, covering NP7 and the surrounding area. We plan internal insulation in Abergavenny homes room by room so you keep the rest of the house usable.
- Free survey in NP7 and nearby
- Guide price from £75 per m² 0% VAT
- Fixed written price before work starts
Free survey in Abergavenny
Postcode, service and a phone number is all we need.
Included as standard
- Sockets, radiators, skirting and coving are moved and refitted
- Loses roughly 50–100mm per insulated wall
- Needs careful detailing at floor joists, reveals and corners
- Insulated plasterboard, stud wall or breathable systems
Local considerations in Abergavenny
As well as Abergavenny itself, we quote in Pontypool, Ebbw Vale and Cwmbran. Abergavenny is about 16 miles from 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.
Where a property in Abergavenny is in a conservation area or the front elevation must stay unchanged, internal insulation is often the practical route.
- Postcode district
- NP7
- County or area
- Gwent
- Nation
- Wales
- Nearby
- Pontypool, Ebbw Vale, Cwmbran, Monmouth
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.
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 Abergavenny
| 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.
What happens next
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 Abergavenny: questions
How much room space will I lose?
Usually 50–100mm on each insulated wall, depending on the system.
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.
Can I stay in the house?
Yes, but each room is out of use while it's worked on, typically 3–5 days.
Do you cover Abergavenny?
Yes — we survey and quote internal wall insulation in Abergavenny (NP7) and nearby Pontypool, Ebbw Vale and Cwmbran, with a fixed written price before any work starts.