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

My house is rendered, won't cavity wall insulation mess up the render?
The holes drilled to inject the cavity insulation are only about 20mm in diameter and are filled with mortar after the insulation has been injected. The installer will be able to match the existing render. If the render is painted, the filled holes should be touched up with matching paint when the mortar has dried.
Can I install cavity wall insulation myself?
No, this is because specialist equipment is needed to install the insulation into the cavity and it's important that the cavity is fully filled with the correct density of insulation. This is why only trained and approved installers are used, and this allows a guarantee can be given on the work. You will also need the work to be professionally done if it is being funded by any government grants.
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.
What is loft insulation made of?
Typically, loft insulation is a mineral wool made out of glass or rock fibers. You can also get natural loft insulation made of sheep's wool, hemp or cellulose which will remove the need for protective equipment,
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