P2.5 - Heating and insulating buildings

Cavity wall insulation

Used to fill the brick cavity between the two brick layers of the external house wall

Methods of heating houses

• electric/gas heaters

• gas/oil fired central heating

Methods to decrease energy transfer from a house

• loft insulation

• cavity wall insulation

• double glazed windows

• aluminium foil behind radiators

• external walls with bricks and lower thermal conductivity

Solar panels

Absorb infrared radiation from the sun and use them to generate energy directly or heat water directly