Loft and cavity wall insulation · Northern Ireland

Loft and cavity wall insulation in Derry City and Strabane

Social landlords in Derry City and Strabane can use us for insulation top-ups and for extracting failed cavity fill that is causing damp.

Social landlords in Derry City and Strabane can appoint us for loft and cavity wall insulation, from a single home to a programme. Social homes in Derry City and Strabane are owned by the Northern Ireland Housing Executive and housing associations. We work to the Northern Ireland Decent Homes Standard and to your own specification.

Derry City and Strabane at a glance

Council: Derry City and Strabane District Council
Nation: Northern Ireland
Council homes: Housing Executive and housing associations
Housing standard: Decent Homes Standard (NI)
Damp and mould timescales: No timescale law found
Population: 151,109 (2020 estimate)
Regional price factor: 0.90 (our estimate)

In Northern Ireland the Housing Executive, not the council, is the public landlord. Population: ONS 2020 mid-year estimate.

Who owns the social homes in Derry City and Strabane?

In Northern Ireland, councils are not housing authorities. Social homes in Derry City and Strabane are owned by the Northern Ireland Housing Executive and by registered housing associations, which are regulated by the Department for Communities.

What do we cover in Derry City and Strabane?

Cavity wall insulation injection
Loft insulation top-ups to current recommended depths
Boarded walkways, hatch insulation and draught-proofing
Loft ventilation checks and remedial vents
Pipe and tank insulation

Loft and cavity wall insulation in a social home

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.

Which rules apply in Derry City and Strabane?

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.

Decent Homes Standard (NI) · More about loft and cavity wall insulation

What does loft and cavity wall insulation cost in Derry City and Strabane?

Our guide range for cavity wall insulation in Derry City and Strabane is £850–£2,450 per home. That is the UK range of £950–£2,700 (published figure) adjusted by a regional cost factor of 0.90 (our own estimate); 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.

Questions about loft and cavity wall insulation in Derry City and Strabane

Who is the social landlord in Derry City and Strabane?

Which housing standard applies in Derry City and Strabane?

In Northern Ireland, the Housing Executive and registered housing associations work to the Northern Ireland Decent Homes Standard, which the Department for Communities consulted on revising in 2025–26.

Do you also work near Derry City and Strabane?

Yes. We take on loft and cavity wall insulation across Northern Ireland, including Mid Ulster, Fermanagh and Omagh, Causeway Coast and Glens and Antrim and Newtownabbey, and in every other UK nation.