Home insulation

Over three quarters of the energy used in a typical UK home is for water or space heating. In poorly insulated homes a lot of heat escapes through walls, roofs and windows, meaning that it costs you more to keep your home warm. By insulating your home you can make significant savings on your energy bill.

Richmond Council is offering discount loft and cavity wall insulation to all residents in the borough and will provide this for free to those in receipt of certain benefits and to those aged 70 or above. For the full range of financial aid and incentives visit our grants and discounts page.

Cavity wall insulation

• Typical cost: £250
• Typical annual saving: £130 - £160
• Typical payback period: < 2 years

Solid wall

Internal insulation

• Typical cost: > £40/sqm
• Typical annual saving: £270 - £340
• Typical payback period: n/a

External insulation

• Typical cost: > £1800
• Typical annual saving: £290 - £350
• Typical payback period: 5 - 6 years

Loft insulation*

Existing depth 0mm

• Typical cost: < £300
• Typical annual saving: £180 - £220
• Typical payback period: < 2 years

Existing depth 50mm

• Typical cost: < £300
• Typical annual saving: £50 - £60
• Typical payback period: 4 - 5 years

Floor insulation

• Typical cost: > £100
• Typical annual saving: £40 - £50
• Typical payback period: < 3 years

Filling gaps between floor and skirting*

• Typical cost: > £20
• Typical annual saving: £10 - £20
• Typical payback period: < 2 years

Hot water cylinder jacket*

• Typical cost: £10
• Typical annual saving: £20
• Typical payback period: < 1 years

Draught proofing*

• Typical cost: > £75
• Typical annual saving: £20
• Typical payback period: 4 years

Double glazing

• Typical cost: n/a
• Typical annual saving: £80 - £100
• Typical payback period: n/a

* Suitable for DIY

Source: Energy Saving Trust