Letchworth Interactive Retrofit House

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  • Retrofit study of a Letchworth home
  • The retrofit process
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  • Further reading

Interactive House

Click an area of the house to see guidance on retrofit measures.

Or click here to see a full directory of retrofit measures for all areas of the house.

Interactive House
Windows and Doors Roofs, Ceilings and Loft Spaces Wall Floors Windows and Doors Heating Windows and Doors Draught proofing Heating

Windows and Doors

Secondary glazing

Thick curtains and thermal blinds

Triple or high-performance double glazing

Window repair

Roofs, Ceilings and Loft Spaces

Loft hatch and ‘skeiling’ insulation

Insulation between joists

Insulation between rafters

Solar photovoltaics (PV)

Wall

Cavity wall insulation

External wall insulation

Hybrid wall insulation

Internal wall insulation

Wall repair

Floors

Insulation between joists (Intermediate floors)

Replacing suspended floor with insulated solid floor

Solid floor insulation

Suspended timber floor insulation

Windows and Doors

Secondary glazing

Thick curtains and thermal blinds

Triple or high-performance double glazing

Window repair

Heating

Heat pump

Modern gas boiler and hot water cylinder

Windows and Doors

Secondary glazing

Thick curtains and thermal blinds

Triple or high-performance double glazing

Window repair

Draught proofing

Chimney draught proofing

Window draught proofing

Heating

Heat pump

Modern gas boiler and hot water cylinder

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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