Internal wall insulation · Hampshire
Internal wall insulation in Winchester
Looking for internal wall insulation in Winchester? We survey homes across Winchester and the SO23 area, then give you a fixed written price before any work starts. We plan internal insulation in Winchester homes room by room so you keep the rest of the house usable.
- Free survey in SO23 and nearby
- Guide price from £75 per m² 0% VAT
- Fixed written price before work starts
Free survey in Winchester
Postcode, service and a phone number is all we need.
Part of every quote
- Sockets, radiators, skirting and coving are moved and refitted
- Needs careful detailing at floor joists, reveals and corners
- Can be done one room at a time during a renovation
- Keeps the outside of the house exactly as it is
Homes and walls in Winchester
As well as Winchester itself, we quote in Eastleigh, Southampton and Totton. Winchester sits around 12 miles from Southampton. Homes across the South East range from inter-war semis and post-war estates, which are mostly cavity-walled, to older solid-walled cottages and Victorian town terraces.
Exposure to wind-driven rain varies across Hampshire: 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 Winchester with attractive brick fronts, one approach is to insulate the front internally and the rear externally.
- Postcode district
- SO23
- County or area
- Hampshire
- Nation
- England
- Nearby
- Eastleigh, Southampton, Totton, Andover
Permissions in England
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 Winchester
| 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
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 Winchester: questions
How much room space will I lose?
Usually 50–100mm on each insulated wall, depending on the system.
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.
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 Winchester?
Yes — we survey and quote internal wall insulation in Winchester (SO23) and nearby Eastleigh, Southampton and Totton, with a fixed written price before any work starts.