Internal wall insulation · Dyfed
Internal wall insulation in Aberystwyth
Internal wall insulation in Aberystwyth: free survey, written specification and a fixed price, with the details that keep walls dry planned from the start. We plan internal insulation in Aberystwyth homes room by room so you keep the rest of the house usable.
- Free survey in SY23 and nearby
- Guide price from £75 per m² 0% VAT
- Fixed written price before work starts
Free survey in Aberystwyth
Postcode, service and a phone number is all we need.
Part of every quote
- Loses roughly 50–100mm per insulated wall
- Sockets, radiators, skirting and coving are moved and refitted
- Needs careful detailing at floor joists, reveals and corners
- Insulated plasterboard, stud wall or breathable systems

Aberystwyth: walls, weather and approvals
Surveys in Aberystwyth also cover the surrounding SY23 district and towns such as Llandrindod Wells and Newtown. Aberystwyth is about 51 miles from Llanelli. West Wales has a high share of older solid-walled and stone homes, many in exposed coastal or rural settings.
Parts of Dyfed 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 Aberystwyth with attractive brick fronts, one approach is to insulate the front internally and the rear externally.
- Postcode district
- SY23
- County or area
- Dyfed
- Nation
- Wales
- Nearby
- Llandrindod Wells, Newtown, Carmarthen, Welshpool
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 Aberystwyth
| 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
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.
Internal wall insulation in Aberystwyth: 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 Aberystwyth?
Yes — we survey and quote internal wall insulation in Aberystwyth (SY23) and nearby Llandrindod Wells, Newtown and Carmarthen, with a fixed written price before any work starts.