5.4 Guide insulation and efficiency

5.4 Guide insulation and efficiency

Insulation and draught sealing don’t require any energy input to run. They work by reducing how much heat escapes your home in winter and how much gets in during summer, so your home stays comfortable for longer and your heating and cooling don’t have to work as hard. Once installed, they keep saving for the life of your home.

Ceiling insulation

Insulation in your ceiling slows heat escaping in winter and entering in summer. It is one of the most effective comfort products for homes that don't have it or have very old insulation, and installation is usually completed in a day.

Read: ceiling insulation product guide

Draught proofing

Draught proofing seals the gaps around windows, doors, chimneys and exhaust fans that let warm air out and cold air in. These are small changes that can make a noticeable difference to comfort.

Read: draught proofing product guide

Draught proofing will be delivered as sealing work rather than chosen from a product list, priced per door, window or metre, with the exact works for your home confirmed at your electrical and safety assessment. Covered work includes sealing around external door perimeters and door bottoms, window closures, gaps around windows, door frames, walls, floors and ceilings, other penetrations, and exhaust fan dampers, including replacing an existing exhaust fan with one that has a built-in damper.

Double glazed windows or doors

Double glazed windows use two panes of glass with a sealed gap between them, which slows heat moving through the window. It can also reduce outside noise. Double glazed windows suit homes where single pane windows are a major source of heat loss or gain.

Read: double glazed windows or doors product guide

Notes

  • These products often pair well with a new air conditioner or heating system, because a well-sealed and insulated home holds the temperature the appliance produces.

Frequently asked questions

How do I know if my ceiling is already insulated?

If you can safely see into your ceiling cavity, insulation looks like loose material between the beams. If you're not sure, your Approved Supplier checks this during your electrical and safety assessment. Don't enter a ceiling cavity yourself.

Are double glazed windows worth it for just one or two windows?

It depends on which windows and how your home is used. See Choosing what's right for your home or talk it through with us.