Draught-proofing for Derry properties
If your property is in Derry or the BT48 district or nearby Limavady, Coleraine and Magherafelt, it is within our County Londonderry coverage. Derry is one of the main towns we cover in County Londonderry.
We check ventilation as carefully as insulation in Derry homes, because both matter for keeping a house dry. Where a Derry home also has empty cavity walls, we can survey those at the same time.
For regulations, if cavity wall insulation follows in Derry, inserting cavity wall insulation needs a building control application to the council before work starts.
Funding in Northern Ireland
In Northern Ireland, the Affordable Warmth Scheme helps eligible households with a gross income under £23,000.
Sources: NI Housing Executive: Affordable Warmth Scheme; Utility Regulator: NI Sustainable Energy Programme.
Ventilation still matters
Trickle vents, air bricks and extractor fans are there for a reason. We seal accidental gaps, not the ventilation your home needs to keep condensation down.
What is included in Derry
- Door and window seals
- Letterbox and keyhole covers
- Loft hatch seals
- Skirting and floor gap sealing
Guide prices for Derry
| Draught-proofing guide prices | Guide price |
|---|---|
| Whole-house draught-proofing | £195–£495 |
| Doors and loft hatch only | £145–£295 |
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 Derry property:
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.