Underfloor insulation for Briton Ferry properties
Briton Ferry is among the towns we cover in West Glamorgan, alongside Neath, Swansea and Gorseinon. It is about 6 miles east of Swansea.
We check ventilation as carefully as insulation in Briton Ferry homes, because both matter for keeping a house dry. Small measures like this are often among the cheapest per pound saved, and they suit Briton Ferry homes of every age.
On the rules side, if cavity wall insulation follows in Briton Ferry, filling a cavity is notifiable work under the Building Regulations as they apply in Wales, usually self-certified through a competent person scheme.
Funding in Wales
In Wales, Warm Homes Nest offers free improvements to eligible low-income households, and ECO4 runs to 31 December 2026.
Sources: Welsh Government: warmer and more energy efficient homes (July 2026); GOV.UK: extending the ECO4 end date, government response.
Keeping the void ventilated
Air bricks under a suspended floor must stay clear so the timbers stay dry. Insulation goes between the joists, not across the void, and gaps at skirtings are sealed to stop draughts.
What is included in Briton Ferry
- Insulation between joists
- Boards relaid
- Draught sealing at skirtings
- Floor void inspection
Guide prices for Briton Ferry
| Underfloor insulation guide prices | Guide price |
|---|---|
| Suspended timber floor, typical room | £795–£1,495 |
| Whole ground floor | £1,995–£3,995 |
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.
How it works in Briton Ferry:
Tell us about the property
Postcode, property type and what you would like done.
Free survey
Access, condition, existing insulation and ventilation checked.
Written result and price
What we recommend and a fixed price before any work.
Work and tidy-up
Fitted at an agreed time, with ventilation kept clear.