Wall & Loft Insulation

Home insulation is material that can be added to different areas of your house to help your house retain heat. Fitting insulation means that less of the heat your heating system produces leaves your house, meaning that less fuel is needed to heat your house to the same temperature. This saves you money on your energy bills – as much as several hundreds of pounds a year!

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The most effective forms of insulation are:

  • Loft Insulation – This is generally easy and cheap to do and will result in an immediate saving; it’s like putting a woolly hat on your house! Typical saving: up to £175 a year.
  • Cavity Wall Insulation – This is a form of insulation which is injected into the air gap in some types of wall. This is a very cheap but effective way of insulating your house. Typical saving: up to £135 a year.
  • Solid Wall Insulation– If your walls do not have a cavity it is possible to add insulation either on the inside or outside of your house’s walls. This costs a little more but is very effective. Typically saving: around £445 – £475.

There is also funding available for wall and loft insulation under the ECO scheme. Under the HHCRO (Home Heating Cost Reduction Obligation) part of the scheme you could get loft insulation and cavity wall insulation installed totally free of charge – see if you qualify for free insulation and apply on our HHCRO Free Insulation page.

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FAQs

What guarantee of workmanship should I look out for in a cavity wall insulation installer?
Cavity wall insulation installers can sign up to a professional code of practice, such as those provided by the Cavity Insulation Guarantee Agency, which guarantees the work for 25 years. The installer should carry out post-installation checks on both the inside and the outside of the property, and you will be asked to sign a form to show you are happy with the work.
I want to use my loft for storage, how can I do that if it is insulated to the depth recommended?
You or your installer can instead lay down innovative loft boards called Space Board. These are insulation boards made from Polyfoam extruded polystyrene designed to be placed on top of the ceiling joists instead of the 170mm mineral wool insulation. You should still aim to lay down 100mm of standard insulation between the joists.
I live in a rented property, can I still get my walls and loft insulated?
Yes, people living in rented property can get their homes insulated, whether you fund it yourself, your landlord funds it or you get it funded through the Green Deal, but you must get the permission of the owner or landlord. There could also be a tax benefit to your landlord if he covers the cost - look at our LESA (Landlord’s Energy Saving Allowance) page to find out more detail.
My loft has been fitted with floorboards - will this cause a problem?
Not necessarily. You can lay the insulation once the floorboards have been taken up, and put the floorboards back over the insulation, or, if you prefer, you can have your insulation lain directly over the floorboards.
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