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.
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
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.
- 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.
- 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.
- How long would it take me to insulate my loft?
- Allow about half a day once you have bought the insulation. Remember - you will need one layer of 100mm between your roof joists if you don't have any insulation, then a second layer of 170mm on top (cross layered) to comply with current building regulations. Measure the area of your loft and look at the packaging label for the area contained in a roll.
- 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.
- Do I need to provide extra ventilation to my loft space if I insulate it?
- That depends on whether it is adequately ventilated at the moment. Increasing the amount of insulation in the loft can lead to condensation of water vapour on any timber there. If your loft is not properly ventilated your installer will advise you, and can install simple vents that will ensure an adequate air flow through the loft.
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