Internal wall insulation · East Sussex
Internal wall insulation in Seaford
If you're planning internal wall insulation in Seaford, start with a free survey: we measure, check the walls and confirm planning and building control for your address. Where a property in Seaford is in a conservation area or the front elevation must stay unchanged, internal insulation is often the practical route.
- Free survey in BN25 and nearby
- Guide price from £75 per m² 0% VAT
- Fixed written price before work starts
Free survey in Seaford
Postcode, service and a phone number is all we need.
What's included
- Needs careful detailing at floor joists, reveals and corners
- Insulated plasterboard, stud wall or breathable systems
- Loses roughly 50–100mm per insulated wall
- Keeps the outside of the house exactly as it is
Local considerations in Seaford
We also cover Eastbourne and Brighton, close to Seaford. Seaford sits around 11 miles from Brighton. 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 East Sussex: 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.
We plan internal insulation in Seaford homes room by room so you keep the rest of the house usable.
- Postcode district
- BN25
- County or area
- East Sussex
- Nation
- England
- Nearby
- Eastbourne, Brighton, Hove, Portslade
Planning and building control 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.
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 Seaford
| 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
Tell us about the property
Use the quote tool or form, or call. Photos help.
Free survey
We measure, check the walls and confirm approvals.
Fixed written quote
System, details, access, exclusions and VAT in writing.
Installation
Scheduled for suitable weather, with a clear programme.
Internal wall insulation in Seaford: 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.
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.
Do you cover Seaford?
Yes — we survey and quote internal wall insulation in Seaford (BN25) and nearby Eastbourne, Brighton and Hove, with a fixed written price before any work starts.