Selected projects delivered by our founder: six site decarbonisation surveys under the LASER Zero Carbon Fund programme for the London Borough of Hammersmith & Fulham (2024–2025), and a PAS 2035 external wall insulation quality review covering 270 properties in North Wales (2026).
Location: North Wales, Exposure Zone 4 (very severe) · Scope: 270 traditional solid-wall dwellings · Role: Retrofit quality & compliance review
External wall insulation on traditional solid-wall housing in a very severe exposure zone is one of the highest-risk retrofit measures in the UK. Across the 270-property scheme, recurring defects were putting performance, durability and compliance at risk: render discolouration and fungal growth, thermal bridging from discontinuous insulation, cold spots around openings, and water-ingress pathways at sills, base tracks and flashings.
This review demonstrates exactly what a competent Retrofit Coordinator brings to a large-scale EWI programme: detecting systemic quality failures early, tying every defect to a specific compliant detail, and preventing installations from requiring remedial render or insulation replacement, protecting the guarantee, the funding compliance and the residents.
Each survey combined a physical site inspection, metered energy analysis, fabric U-value and heat-loss calculation, and a costed, ranked set of carbon-reduction options , supporting the borough's strategy of reaching net zero by 2030.
A multi-building primary school with significant fabric losses and gas-fired heating. The whole-site plan combines internal wall insulation, roof and glazing upgrades, a low-temperature heat pump and solar PV, cutting emissions 75% and eliminating on-site fossil fuel reliance. 538,705 kWh and 97.1 tCO₂e saved per year; 2,516 lifetime tCO₂e.
Fabric-led plan including 1,512 m² of internal wall insulation (11% cut in total building heat loss), glazing replacement cutting glazed-surface heat loss by 28%, LED lighting, heat-pump conversion and a district-heating connection assessment.
Air-to-water heat pump and solar PV package saving 22,400 kWh and 4.0 tCO₂e per year with a net annual running-cost saving. 80.9 tCO₂e saved over measure lifetimes for a £63,000 investment.
A tightly-scoped, high-value intervention: air-to-air heat pump with supplementary electric heating, saving 12,000 kWh/yr with a 39% emissions reduction, evidence that decarbonisation does not always require major capital works when the analysis is done properly.
A landmark theatre with a 416 kW design heat load, complex occupancy and heritage constraints. The survey assessed heat-pump conversion, solar PV, lighting upgrades and district-heating options, a pathway that respects the building's operational and architectural constraints.
Heat pump and solar PV plan that fully removes on-site fossil fuel use, with the site modelled to become a net exporter of clean electricity in summer months.
| Measure | Energy saved (kWh/yr) | CO₂e saved (t/yr) | Project cost | Lifetime tCO₂e |
|---|---|---|---|---|
| Internal wall insulation | 112,917 | 20.6 | £582,800 | 721.5 |
| Flat roof to pitched (rafters) | 23,001 | 4.2 | £52,119 | 126.0 |
| Pitched roof (loft) | 35,077 | 6.4 | £22,778 | 172.9 |
| Glazing upgrade | 111,420 | 20.3 | £381,600 | 569.5 |
| Heat pump (low temp.) | 224,673 | 39.0 | £610,785 | 780.7 |
| Solar PV | 31,616 | 6.5 | £56,511 | 145.8 |
| Total | 538,705 | 97.1 | £1,706,593 | 2,516.4 |
Figures are taken from the published survey reports; savings shown are modelled annual and lifetime values from the recommended-measures analysis in each report. Full reports available on request, subject to client permissions.
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