Loft and cavity wall insulation · London
Loft and cavity wall insulation in Merton
We install loft and cavity wall insulation in social homes in Merton, after a survey that checks the wall and loft are suitable.
We take on loft and cavity wall insulation in Merton for housing associations (which own most social homes here) and supported housing providers, managing every trade ourselves and working to the timescales in your order. Most social homes in Merton belong to housing associations after the council transferred its stock.
Merton at a glance
- Council
- London Borough of Merton
- Region
- London
- Council homes
- Transferred to housing associations
- Approx. council homes
- 83 (2020)
- Housing standard
- Decent Homes Standard (England)
- Damp and mould timescales
- Awaab's Law (since 27 Oct 2025)
- Population
- 206,453 (2020 estimate)
- Regional price factor
- 1.22 (VOA 2026)
Council housing status from Housing Revenue Account records (MHCLG and the 2012 HRA list, updated for later transfers) and council publications, checked October 2026. Population: ONS 2020 mid-year estimate.
Who owns the social homes in Merton?
Most social homes in Merton are owned by housing associations, following the transfer of the council's homes to housing association ownership. The London Borough of Merton remains the strategic housing authority, with duties on homelessness and housing need.
What do we cover in Merton?
- Cavity suitability survey, including borescope inspection
- Cavity wall insulation injection
- Extraction of failed or unsuitable cavity fill
- Loft insulation top-ups to current recommended depths
- Pipe and tank insulation
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 Merton?
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 (England) · More about loft and cavity wall insulation
What does loft and cavity wall insulation cost in Merton?
Our guide range for cavity wall insulation in Merton is £1,150–£3,300 per home. That is the UK range of £950–£2,700 (published figure) adjusted by a regional cost factor of 1.22 (VOA Rating Cost Guide 2026: inner London 1.17–1.32, outer London 1.08–1.26); 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 Merton
Does the London Borough of Merton still own council homes?
Most social homes in Merton are owned by housing associations, following the transfer of the council's homes to housing association ownership. The London Borough of Merton remains the strategic housing authority, with duties on homelessness and housing need.
Which housing standard applies in Merton?
Social homes in England must meet the Decent Homes Standard, enforced through the Regulator of Social Housing's Safety and Quality Standard. A reformed standard, confirmed in January 2026, must be met by 2035 at the latest.
Do you also work near Merton?
Yes. We take on loft and cavity wall insulation across London, including Wandsworth, Sutton, Kingston upon Thames and Lambeth, and in every other UK nation.
Other works we carry out in Merton
- Kitchen replacement programmes
- Whole-house retrofit
- Cyclical and external decoration
- Fire door installation and remediation
- Void property works
- Housing disrepair works
- Window and door replacement
- Acquisition and temporary accommodation refurbishment
- Responsive repairs
- Fire stopping and compartmentation
- Estate and external works
- Electrical remedial works and rewires