Loft and cavity wall insulation · England
Loft and cavity wall insulation in the South East
Loft top-ups and cavity fill are the cheapest fabric measures for most homes in the South East, provided the survey comes first.
We take on loft and cavity wall insulation for social landlords across the South East: housing associations, councils, ALMOs and supported housing providers in all 64 council areas, to the rules that apply in England.
Where in the South East do we carry out loft and cavity wall insulation?
We cover every council area in the South East. Choose one to see who owns the social homes there and the local guide price.
- Adur
- Arun
- Ashford
- Basingstoke and Deane
- Bracknell Forest
- Brighton and Hove
- Buckinghamshire
- Canterbury
- Cherwell
- Chichester
- Crawley
- Dartford
- Dover
- East Hampshire
- Eastbourne
- Eastleigh
- Elmbridge
- Epsom and Ewell
- Fareham
- Folkestone and Hythe
- Gosport
- Gravesham
- Guildford
- Hart
- Hastings
- Havant
- Horsham
- Isle of Wight
- Lewes
- Maidstone
- Medway
- Mid Sussex
- Milton Keynes
- Mole Valley
- New Forest
- Oxford
- Portsmouth
- Reading
- Reigate and Banstead
- Rother
- Runnymede
- Rushmoor
- Sevenoaks
- Slough
- South Oxfordshire
- Southampton
- Spelthorne
- Surrey Heath
- Swale
- Tandridge
- Test Valley
- Thanet
- Tonbridge and Malling
- Tunbridge Wells
- Vale of White Horse
- Waverley
- Wealden
- West Berkshire
- West Oxfordshire
- Winchester
- Windsor and Maidenhead
- Woking
- Wokingham
- Worthing
What is included?
- Cavity suitability survey, including borescope inspection
- Extraction of failed or unsuitable cavity fill
- Boarded walkways, hatch insulation and draught-proofing
- Loft ventilation checks and remedial vents
- Pipe and tank insulation
Which rules apply in the South East?
PAS 2035:2023 sets the whole-house retrofit process (assessment, coordination, design, installation and evaluation), and PAS 2030:2023 covers installation. Most government-backed retrofit schemes require both, with TrustMark lodgement. We confirm in writing, before appointment, how each measure in your scope will meet those requirements.
What does it cost in the South East?
Our guide range for cavity wall insulation in the South East is £1,050–£2,950 per home. That is the UK range of £950–£2,700 (published figure) adjusted by a regional cost factor of 1.10 (VOA Rating Cost Guide 2026: 1.05–1.15); figures are before VAT where the source states it. Every job is priced after survey; specification, access and the condition of the homes will move the figure.
How do we deliver it?
No home is filled without a suitability survey. A cavity that should not have been filled becomes a damp complaint, and then a disrepair case.
Common questions
Which council areas in the South East do you cover for loft and cavity wall insulation?
All 64: Adur, Arun, Ashford, Basingstoke and Deane, Bracknell Forest, Brighton and Hove, Buckinghamshire, Canterbury, Cherwell, Chichester, Crawley, Dartford, Dover, East Hampshire, Eastbourne, Eastleigh, Elmbridge, Epsom and Ewell, Fareham, Folkestone and Hythe, Gosport, Gravesham, Guildford, Hart, Hastings, Havant, Horsham, Isle of Wight, Lewes, Maidstone, Medway, Mid Sussex, Milton Keynes, Mole Valley, New Forest, Oxford, Portsmouth, Reading, Reigate and Banstead, Rother, Runnymede, Rushmoor, Sevenoaks, Slough, South Oxfordshire, Southampton, Spelthorne, Surrey Heath, Swale, Tandridge, Test Valley, Thanet, Tonbridge and Malling, Tunbridge Wells, Vale of White Horse, Waverley, Wealden, West Berkshire, West Oxfordshire, Winchester, Windsor and Maidenhead, Woking, Wokingham, Worthing.
How deep should loft insulation be?
Current guidance for most lofts is around 270mm of mineral wool, or equivalent, but your specification and funding scheme set the target.
Can you remove failed cavity insulation?
Yes. Extraction is common where old fill has become wet and is bridging damp to the inner wall.