The benefits of Wall & Loft Insulation

It is pretty much universally agreed that around a quarter of the heat in your home is lost through the roof and a further third is lost through the walls – maybe more! The more that this heat loss is reduced the easier – and cheaper – it will be to heat your home.

You can even get your walls and loft insulated FREE if you meet certain criteria.

Some of the main benefits for insulating your walls and loft are:

  • Optimal Temperature - Comfort is improved year-round as it will be easier to control the temperature of your home, both keeping it warm in winter and cool in summer
  • Reduces Energy Bills - by over 40% and it pays for itself in around two to four years, and keeps paying for itself year after year for over 40 years
  • Reduce Carbon Emissions – Saves non-renewable resources as less energy is need to heat your home, reducing greenhouse gas emissions
  • Reduced Condensation – When fitted well it will virtually eliminate condensation on walls and ceilings
  • Sound Proofing - Insulation materials are often very effective at sound proofing
  • Improve your Home Efficiency Rating - The EPC (Energy Performance Certificate) is used whenever a home is sold or rented to measure its energy performance - insulation will improve its rating

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Overall the savings for insulating your walls and loft could be £265 per year and 1.4 tonnes of carbon! This could be even more if you have solid walls.

Few investments are this good!

You can even get your loft and cavity wall insulation installed for free through the HHCRO scheme, part of the ECO, the grant scheme running alongside the Green Deal. The scheme is paid for by the energy companies. You can check whether you qualify for free insulation and apply through us by heading to our HHCRO Free Insulation page.

There are also grants available for solid wall insulation through another part of the ECO. It’s not yet clear how customers will be able to apply for this scheme. It’s likely we’ll know more in May 2013 – we’ll update this page when we do.

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FAQs

My house is semi-detached/terraced and my neighbour(s) doesn't want cavity wall insulation. Can you still insulate my walls?
Yes, your house can still be insulated. The installer will need to make a hole at the top and bottom of the wall to insert a spacer at the junction between the two houses. This prevents insulation being blown into the cavity of your neighbour's house.
How can I tell if my new home's previous owners have already insulated the cavity walls?
If a house was built within the last ten years, it probably has cavity wall insulation installed as slabs when the walls were built. You can tell if previous owners have had it installed after the house was built by looking at the outside of the external walls under your windows. If there are small holes of about an inch diameter filled in with something, this indicates that your walls have been filled with insulation. Another way to tell is by looking at the tops of your external walls, which may be open under your roof. If you can look inside the tops of the walls you may be able to see whether there's any insulation in them.
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.
How much loft insulation do I need?
To meet current Building Regulations you need 270mm of mineral wool insulation - that's 100mm between the ceiling joists and 170mm laid over the joists.
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.
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