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Why get cavity wall insulation?

A home can lose as much as 35% of its heat through uninsulated external walls. By investing in cavity wall insulation, you can significantly reduce the heat loss from your home. The concept of insulating a cavity wall is really very simple – it involves filling the cavity between the two skins of masonry bricks with an insulating material, which slows the movement of heat through the wall. Maintaining the heat inside your home keeps you warm and cosy when you need to be, it also works in reverse by keeping your house cooler in the summer months.


Installing cavity wall insulation in your home will not only help to decrease your heating bills by saving energy lost through the walls, it will also help to reduce your carbon footprint by limiting the amount of CO² and other greenhouse gases emitted from your property.


Many houses since the late 1930s were built with a cavity between the inner and outer walls. Because of this cavity, many of Britain’s homes have thermal performances which are well below the standards required by current building regulations. These properties suffer from unacceptably high levels of heat and energy loss through the walls. A system was introduced in the 1970s to inject insulation into these cavity walls.


Cavity wall insulation helps protect the environment by reducing your carbon footprint

Along with providing a more comfortable living environment, CWI means less fuel - using less fuel can reduce bills and your home’s impact on the environment. Most grid electricity and the burning of gas produce carbon dioxide - CO2 – in production, transport and usage. CO2 is the most measured and famous greenhouse gas which cause climate change. The Energy Savings Trust estimate that a three-bedroom house can save around £140 per year (April 2014). Similarly, less fuel burnt means less production of CO2. Insulating your home can save about the same amount of CO2 as driving a thousand miles per year.


Does my property have Cavity walls?

Cavity walls weren't generally used in building until the early 1930s, so knowing the age of your home is the first useful step in figuring out if you have them. If your home was built after 1930 then it’s highly likely you have cavity walls.

Another useful trick is to look at the pattern of your house bricks. A regular pattern of bricks – where all the bricks are laid on the long side – usually means you have cavity walls.


But please don’t worry about checking your walls before getting in touch with us. We’ll assess your property thoroughly to see if you have cavity walls or cavity wall insulation when we come to see you.


Is cavity wall insulation messy to install?

No, cavity wall insulation is straight forward and mess free when done by a professional. We can install cavity wall insulation in no more than half a day. Our specialist heating engineers drill 2cm holes in to the outer wall, then inject your wall with cavity wall insulation. Once the cavity is full, the holes are nicely filled in to match the existing wall.


Our work is covered by the ‘Cavity Insulation Guarantee Agency’ (CIGA), which is valid for over 25 years.


We offer FREE insulation for your home, 100% grant funded.

We're offering free cavity wall for all homeowners and landlords with the option to add loft insulation free of charge. All homes with cavity walls – big or small, regardless of age can benefit. It’s part of the Affordable Warmth drive and the Government’s Energy Companies Obligation (ECO) Scheme to tackle fuel poverty and reduce carbon emissions.


No hidden catches. Just extra comfort at no extra cost.


We use EPS Bonded Bead, a superior product.

Benefits of Blown Bead

Outstanding durability – blown beads are rot proof, water resistant and sufficiently stable to remain effective as an insulation for the life of the building.

No settlement – as the blown beads are coated with an air drying bonding agent during installation. There is no possibility of settlement occurring. The insulation remains in place for the life of the building ensuring that it is not possible to create gaps at the top of the property.

A consistent density of insulation

Constant thermal projection throughout the installed area.

No wastage – the beads flow unrestricted, totally filling the cavity, forming a homogeneous heat saving mass.

A straightforward installation process that is time efficient and has a low H&SE liability.


The benefits of Loft insulation


When it comes to weatherproofing your home for the Winter, the advantages of loft insulation are second to none.  Thinking of your property in terms of its investment potential makes sound financial sense, especially if you’re considering selling it on at a later date.

Whether you’ve just moved into a new property, or have existing insulation that needs replacing Mersey Eco Grants can help.


How does it work?


It’s well-known that hot air rises; it’s something we all learnt about in science. To put it simply, loft insulation, works a bit like a guard dog for heating your home, acting as an effective barrier to prevent hot air rising from the lower levels of your home towards the roof.

Without such barriers in place, your energy and heating bills are likely to be an all-time high, with no signs of abating for the foreseeable future. Conserving heat, means conserving your hard-earned cash-it’s that simple.


Reducing your energy bills


With energy bills on the rise, looking for ways to improve your home’s thermal efficency is a sensible solution. One of the benefits of installing loft insulation is that it takes only a minimal amount of time to see the savings.

Reduces Carbon Emissions


By installing loft insulation in your roof space, your home will be producing significantly less carbon, consequently earning itself some eco-friendly credentials in the process. For potential buyers, an eco-friendly home is a much more attractive proposition and will add significantly more value to your property as a result.

Free Insulation for Homeowners


You are likely to be eligible for 100% funding for insulation grants if you or anybody in your home are in receipt of one or more of the following benefits:

Pension Credit

Child Tax Credit

Working Tax Credit

Income-based Job Seekers Allowance

Universal Credit

Income Support


Income-related Employment and Support Allowance

If you do not fall into this category you are still likely to benefit from Government funding, please enter your details in the Application Form The ECO scheme legally requires the main energy suppliers to install energy efficient technologies such as cavity wall insulation and loft insulation to domestic households in the UK. If the energy suppliers fall short of their obligations they receive hefty fines.


Some energy providers are lowering the criteria for eligibility as they struggle to meet the targets. This means that most householders are now able to obtain free

insulation measures.


The only limitation on the delivery of the scheme is that you must own the property to be treated or rent it privately and have the landlord’s permission to undertake the work.


Improving your Cavity wall and loft insulation can reduce your energy bills on average by £500 per annum. Having your home insulated properly is also a requirement for additional home improvement grants like the renewable Heat Incentive (RHI) or the Green Deal on the basis that there is little point funding alternative heating if the heat generated is not managed efficiently.


Free loft insulation

About 25% of heat is lost through the roof of poorly insulated properties as heat rises. Roof and loft insulation is by usually the most efficient measure as it’s typically the cheapest to install and has the greatest effect. This said, most suppliers prefer to install loft insulation in conjunction with cavity wall or other measures as this enables them to meet targets faster with less administration.


Not all properties are suitable for loft insulation and will be subject to a survey, there is no charge for this.



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Mersey Eco Grants Ltd

Cotton Court

Church Street



Call 07598 187673



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