Internal wall insulation · Hampshire
Internal wall insulation in Havant
Internal wall insulation in Havant: free survey, written specification and a fixed price, with the details that keep walls dry planned from the start. For terraced homes in Havant with attractive brick fronts, one approach is to insulate the front internally and the rear externally.
- Free survey in PO9 and nearby
- Guide price from £75 per m² 0% VAT
- Fixed written price before work starts
Free survey in Havant
Postcode, service and a phone number is all we need.
What you get
- Insulated plasterboard, stud wall or breathable systems
- Can be done one room at a time during a renovation
- Loses roughly 50–100mm per insulated wall
- Sockets, radiators, skirting and coving are moved and refitted
Havant: walls, weather and approvals
We cover Havant and nearby Waterlooville, Portsmouth and Gosport. It's roughly 19 miles from Havant to Southampton, the largest town in Hampshire. 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 Havant is in a conservation area or the front elevation must stay unchanged, internal insulation is often the practical route.
- Postcode district
- PO9
- County or area
- Hampshire
- Nation
- England
- Nearby
- Waterlooville, Portsmouth, Gosport, Fareham
England: planning and regulations
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 Havant
| 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 Havant: questions
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.
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.
Do you cover Havant?
Yes — we survey and quote internal wall insulation in Havant (PO9) and nearby Waterlooville, Portsmouth and Gosport, with a fixed written price before any work starts.