Internal wall insulation · Dyfed
Internal wall insulation in Haverfordwest
We quote internal wall insulation for homes in Haverfordwest (SA61) and nearby Milford Haven and Carmarthen, with guide prices online and a free survey to fix the price. We plan internal insulation in Haverfordwest homes room by room so you keep the rest of the house usable.
- Free survey in SA61 and nearby
- Guide price from £75 per m² 0% VAT
- Fixed written price before work starts
Free survey in Haverfordwest
Postcode, service and a phone number is all we need.
What the job covers
- Insulated plasterboard, stud wall or breathable systems
- Loses roughly 50–100mm per insulated wall
- Sockets, radiators, skirting and coving are moved and refitted
- Keeps the outside of the house exactly as it is
Homes and walls in Haverfordwest
Surveys in Haverfordwest also cover the surrounding SA61 district and towns such as Milford Haven and Carmarthen. Haverfordwest is about 36 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 Haverfordwest with attractive brick fronts, one approach is to insulate the front internally and the rear externally.
- Postcode district
- SA61
- County or area
- Dyfed
- Nation
- Wales
- Nearby
- Milford Haven, Carmarthen, Llanelli, Gorseinon
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 Haverfordwest
| 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 Haverfordwest: questions
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.
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.
How much room space will I lose?
Usually 50–100mm on each insulated wall, depending on the system.
Do you cover Haverfordwest?
Yes — we survey and quote internal wall insulation in Haverfordwest (SA61) and nearby Milford Haven, Carmarthen and Llanelli, with a fixed written price before any work starts.