Keeping your home warm requires keeping the heat where you need it – inside. If your home is built with cavity walls, where there are two walls (inner and outer) with a gap in between, you may be able to insulate this gap to keep heat in.
Benefits of cavity wall insulation
Around a third of all heat loss in an uninsulated home is through the walls. By insulating your wall cavity, you will help reduce heat loss, reduce your bills and lower your carbon footprint.
According to the Energy Saving Trust, a typical semi-detached home could save around £110 by insulating their cavity wall.
Is it suitable for my home?
Homes built after the 1920s and before the 1990s are likely to have a cavity that can be insulated. The cavity will need to be unfilled and be at least 35mm wide.
If your home has solid walls, cavity wall insulation will not be appropriate.
If the brickwork has been covered you may be able to measure the width of the wall at a door or window. If the width of the wall is narrower than 260mm thick it is likely to be a solid wall.
If your house is steel or timber framed or made from pre-fabricated concrete, you will need to speak specialist advice to see if any insulation can be carried out.
Your walls will also need to be in good condition.
Things to consider
Ventilation – You will need to ensure your home is adequately ventilated once cavity wall insulation is installed.
Dampness – If your home has issues with rising or penetrating damp, you should seek advice before going ahead with a cavity wall insulation installation.
Cavity wall insulation should be guaranteed for 25 years by CIGA.
How much does Cavity Wall Insulation cost?
The cost will depend on your home but typical installs can cost in the region of £2000-£2500.
You may be eligible for support with the cost of insulating your home if you live in Scotland. Read more about the available grants and funding in our guide.
Support from Cosy Kingdom
Would you like some more advice on insulating your home? Cosy Kingdom is a free and impartial energy advice service available to everyone living in Fife.
Our energy advisors can be contacted by:
- Calling 01592 807930
- Texting COSY then YOUR NAME to 88440
- Emailing info@cosykingdom.org.uk
- Request advice online