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Retrofit case study: Follett Street

Suatainability in practice: Terraced house, Follett Street, Tower Hamlets

Project data

House type 1870s mid-terrace in conservation area
Location  Tower Hamlets, East London
Project team leader East Thames Homes
Energy consultant PRP Environmental
Construction type Solid brickwork
U-values  Internal wall insulation 0.23W/m²K; ground floor insulation  0.17W/m²K; roof insulation  0.12W/m²K new inert gas-filled double-glazed timber sashes-glazing only 1.4 W/m²K
Services upgrading Gas condensing boiler and flue gas heat recovery unit; solar hot-water and photovoltaic panels; waste water heat recovery system; sun pipes to upper landing
CO2 emissions before retrofit  92kg/m²/year
Estimated CO2 emissions after retrofit 16kg/m²/year
Percentage reduction 83%

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