6
5
1
2
4
Heat
pump
3
1 External walls Insulation boards added to outside of property. Protects wall from the weather. Requires scaffolding and will alter appearance of house
2 Windows Double and triple glazing can decrease energy loss and save money on bills
3 Low-carbon heating, cooling and ventilation Heat pumps could replace gas boilers. Draught proofing to increase energy efficiency once insulation installed, reduces need for heating and cooling
4 Internal wall insulation Essential as part of whole-house approach to insulation but installation can be disruptive and change size and appearance of rooms
5 Cavity walls Many interwar homes have cavity walls. Filling these gaps between inner and outer brickwork can reduce heat loss by up to 40%
6 Loft and roof insulation Interwar houses generally have sloping roofs with space underneath contributing to heat loss. Roof insulation is cost-effective at improving energy efficiency
External walls
Insulation boards added to
outside of property. Protects
wall from the weather. Requires
scaffolding and will alter
appearance of house
Loft and roof insulation
Interwar houses generally
have sloping roofs with space
underneath contributing to
heat loss. Roof insulation
is cost-effective at improving
energy efficiency
Cavity walls
Many interwar
homes have cavity
walls. Filling these
gaps between inner
and outer brickwork
can reduce heat
loss by up to 40%
Windows
Double and triple glazing
can decrease energy
loss and save money
on bills
Heat
pump
Low-carbon heating,
cooling and ventilation
Heat pumps could replace gas boilers.
Draught proofing to increase energy
efficiency once insulation installed,
reduces need for heating and cooling
Internal wall insulation
Essential as part of
whole-house approach
to insulation but installation
can be disruptive and change
size and appearance of rooms