Letchworth Interactive Retrofit House

  • Launch the Interactive House
  • Retrofit study of a Letchworth home
  • The retrofit process
  • Quick wins
  • Consents and Planning Permission
  • Further reading

Directory of retrofit measures

Draught proofing

Chimney draught proofing

Window draught proofing

Floors

Insulation between joists (Intermediate floors)

Replacing suspended floor with insulated solid floor

Solid floor insulation

Suspended timber floor insulation

Heating

Heat pump

Lighting

LED lighting

Roofs, ceilings and loft spaces

Loft hatch and ‘skeiling’ insulation

Insulation between joists

Insulation between rafters

Solar photovoltaics (PV)

Ventilation

Centralised Mechanical Extract Ventilation (MEV)

Decentralised Mechanical Extract Ventilation (dMEV)

Mechanical Ventilation with Heat Recovery (MVHR)

Walls

Cavity wall insulation

External wall insulation

Hybrid wall insulation

Internal wall insulation

Wall repair

Windows and doors

High-performance triple or double glazing

Secondary glazing

Thick curtains and thermal blinds

Window repair

Disclaimer

While efforts have been made to ensure the accuracy and quality of the information provided within this Interactive House website, neither the principal authors the Alliance for Sustainable Building Products (ASBP), nor Letchworth Garden City Heritage Foundation (LGCHF) or People Powered Retrofit, accept any responsibility or liability for the subsequent use of this information, for any errors or omissions that it may contain, or for any misunderstandings arising from it. Users of the Interactive House must exercise their own judgement when deciding whether to abide by or depart from the guidance, and seek further advice from a retrofit professional.

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