Cavity wall insulation for Brighton properties
Brighton is among the towns we cover in East Sussex, alongside Hove, Rottingdean and Seaford. Brighton is one of the main towns we cover in East Sussex.
If a wall in Brighton is not suitable, for example because of an undiagnosed damp patch or a very exposed gable, you are told so in writing with the reason. A suitable wall in Brighton is usually filled in a single day from outside, with drill holes made good to match the pointing.
Exposure matters for every cavity wall. East Sussex has a mix of moderate and more exposed sites. Hilltop, coastal and west-facing walls take the brunt of wind-driven rain, so the survey records exposure for each elevation before a material is chosen.
For regulations, in Brighton filling a cavity is notifiable building work and needs a building notice or competent-person self-certification.
Funding in England
In England, ECO4 runs to 31 December 2026 and Warm Homes: Local Grant supports low-income households through councils.
Sources: GOV.UK: extending the ECO4 end date, government response; GOV.UK: Warm Homes Plan.
Which material goes in?
Usually blown mineral wool or bonded polystyrene beads, both third-party certified for cavity fill. The survey picks the system that suits your cavity width, wall condition and exposure zone, not whichever is cheapest on the day. Old-style urea-formaldehyde foam is not used.
What is included in Brighton
- Borescope check where the cavity is in doubt
- Suitability survey with photos and a written result
- Building regulations route for your nation, confirmed in writing
- Certified mineral wool or bonded bead system
Guide prices for Brighton
| Cavity wall insulation guide prices | Guide price |
|---|---|
| Detached house | £2,295–£3,795 |
| Semi-detached house | £1,495–£2,495 |
| End-terrace house | £1,295–£2,195 |
| Detached bungalow | £1,295–£2,195 |
| Semi-detached bungalow | £895–£1,595 |
| Mid-terrace house | £795–£1,395 |
No VAT is charged on installing insulation in homes until 31 March 2027 (then 5%). Guide ranges only: the fixed price is confirmed in writing before any work starts, and anything that could not be seen at survey is agreed with you first.
What happens next for a Brighton property:
Tell us about the property
Postcode, property type and what you need.
Free survey
Walls, cavity, condition and exposure checked and photographed.
Written result and price
Suitable, suitable after repairs, or not suitable, with a fixed price.
Work and paperwork
Installation, making good, and the regulations and guarantee paperwork.