Internal wall insulation · Hampshire
Internal wall insulation in Waterlooville
Quotes for internal wall insulation in Waterlooville list the system, the detailing and the VAT position in writing, so you know exactly what's included. For terraced homes in Waterlooville with attractive brick fronts, one approach is to insulate the front internally and the rear externally.
- Free survey in PO7 and nearby
- Guide price from £75 per m² 0% VAT
- Fixed written price before work starts
Free survey in Waterlooville
Postcode, service and a phone number is all we need.
What the job covers
- Loses roughly 50–100mm per insulated wall
- Keeps the outside of the house exactly as it is
- Sockets, radiators, skirting and coving are moved and refitted
- Needs careful detailing at floor joists, reveals and corners

Homes and walls in Waterlooville
We cover Waterlooville and nearby Havant, Portsmouth and Fareham. Waterlooville sits around 16 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.
Where a property in Waterlooville is in a conservation area or the front elevation must stay unchanged, internal insulation is often the practical route.
- Postcode district
- PO7
- County or area
- Hampshire
- Nation
- England
- Nearby
- Havant, Portsmouth, Fareham, Gosport
Approvals in England
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 Waterlooville
| 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 Waterlooville: questions
Can I stay in the house?
Yes, but each room is out of use while it's worked on, typically 3–5 days.
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.
Do you cover Waterlooville?
Yes — we survey and quote internal wall insulation in Waterlooville (PO7) and nearby Havant, Portsmouth and Fareham, with a fixed written price before any work starts.