Internal wall insulation · Gwent
Internal wall insulation in Risca
We quote internal wall insulation for homes in Risca (NP11) and nearby Newport (Gwent) and Cwmbran, with guide prices online and a free survey to fix the price. Where a property in Risca is in a conservation area or the front elevation must stay unchanged, internal insulation is often the practical route.
- Free survey in NP11 and nearby
- Guide price from £75 per m² 0% VAT
- Fixed written price before work starts
Free survey in Risca
Postcode, service and a phone number is all we need.
Part of every quote
- Can be done one room at a time during a renovation
- Insulated plasterboard, stud wall or breathable systems
- Loses roughly 50–100mm per insulated wall
- Needs careful detailing at floor joists, reveals and corners
Local considerations in Risca
As well as Risca itself, we quote in Newport (Gwent), Cwmbran and Caerphilly. Risca is about 5 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.
For terraced homes in Risca with attractive brick fronts, one approach is to insulate the front internally and the rear externally.
- Postcode district
- NP11
- County or area
- Gwent
- Nation
- Wales
- Nearby
- Newport (Gwent), Cwmbran, Caerphilly, Pontypool
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.
What are the options for internal insulation?
- Insulated plasterboard — PIR or phenolic foam bonded to plasterboard, fixed to the wall and skimmed. Thinnest option.
- Insulated stud wall — a timber or metal frame filled with insulation, with a vapour control layer and plasterboard. Takes more space but runs services easily.
- Wood fibre and lime — breathable boards finished in lime plaster, for older walls that need to manage moisture.
Internal wall insulation prices in Risca
| 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.
How it works
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 Risca: questions
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.
How much room space will I lose?
Usually 50–100mm on each insulated wall, depending on the system.
Do you cover Risca?
Yes — we survey and quote internal wall insulation in Risca (NP11) and nearby Newport (Gwent), Cwmbran and Caerphilly, with a fixed written price before any work starts.