Cavity Wall Insulation

Cavity Wall Insulation in Leicester

Cavity Wall Insulation is a great way of reducing heat loss through the walls of your home.


In the UK, houses typically have solid or cavity walls. Cavity walls are made up of two walls of brick, with an air space in between; by filling this space with insulation, heat loss is greatly reduced.


  • Reduce heat loss
  • Save on your energy bills
  • Improve your carbon footprint and reduce carbon emissions


If you're a homeowner and receive a qualifying benefit you may be eligible for free cavity wall insulation as part of the ECO4 Scheme. Find out if you qualify and get a quote online today.

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The benefits of Cavity Wall Insulation

We've put together a short explainer video for how your home can benefit from a free cavity wall insulation grant.

The benefits

Around one third of heat loss within a home occurs through the walls. Insulation can help significantly improve this.

  • Reduced heat loss
  • Keep your house warm in Winter and cool in Summer
  • Save on your energy bills
  • Improve your carbon footprint and reduce carbon emissions
  • Improve your EPC rating
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You could qualify for FREE Cavity Wall Insulation with the ECO Scheme

If you are a homeowner in receipt of a benefit and have Cavity walls, you're likely to qualify for free Cavity Wall insulation.


  • Improve your home's energy efficiency and EPC rating
  • Reduce heat loss and carbon emissions
  • Save money on your energy bills
Start your application now

Small holes are drilled into the brickwork

Small holes are drilled into the brickwork in a specific pattern ready to be injected.

Insulation is injected into the air space

The insulation is then injected into these holes until the space in between has been filled.

Holes are filled in to match surroundings

After the insulation has been injected, the small entrance holes in the wall are filled in to match the surrounding bricks.

Heat loss is significantly reduced

Your home will be kept warmer in winter and cooler in summer, reducing heat loss and energy bills.

Cavity Wall Insulation FAQs

Here are answers to some common questions about Cavity Wall Insulation.

  • Do I have Cavity Walls?

    A simple way to check whether you have cavity walls or solid walls is to look at the brick pattern of your home.


    Cavity walls have an even brick length pattern whereas solid walls have alternating brick lengths. If you're unsure, click here to find out more.


    If your house was built after the 1920's,  then it is likely to have cavity walls. Cavity walls are made up of 2 walls of bricks with a gap of air space in between - this is the cavity.  Solid walls have no cavity.

  • Is Cavity Wall Insulation the right option for me?

    Cavity wall insulation is a great option for insulating your home and reducing heat loss.


    Some of the benefits include:

    • Warmer home in winter, cooler in summer
    • Savings on your energy bills
    • Reduced carbon emissions
    • Improved energy efficiency
    • Higher EPC rating for your propety
    • Simple and effective installation

    If your house was built in the last 20 years or so, then the walls are likely to have already been insulated; however if you're not sure of this, we can help you.


  • How does Cavity Wall Insulation work?

    Around 35% of heat in a home is lost through uninsulated walls.


    Insulation material is injected directly into the wall cavity, filling the air space. Doing this traps the heat from inside your home, reducing heat loss and keeping your home warmer overall.

  • Can I get insulation for free (ECO Scheme)?

    If you are a homeowner on benefits, and you have cavity walls - you  could qualify for FREE Cavity wall insulation.


    To find out more, please fill out our online application form with your details and we will get back to you.


    Certain benefits accepted, Exclusions apply, Subject to survey)

  • How do I apply?

    To apply for Cavity Wall Insulation, simply fill out an online form with your details and submit it.

    From here, we can get back to you and discuss the next steps.


    If you are applying for a grant with the ECO Scheme, please use our designated online tool, found here.

  • How does the installation process work?

    After contacting us, we will arrange a survey to check your property and make sure everything is okay for the install of insulation. We may also ask you some further questions.


    For ECO Grants, we will verify your eligibilty for the grant before survey. If there is any further information needed, we will discuss this with you.


    To install, small holes are drilled into the brickwork of your home in an even pattern. The insulation is then injected, filling the cavity space.

    Once the walls have been fully insulated, the small holes are filled in and matched to the surrounding brickwork.


Other types of insulation

Find out more about the different insulation types available for homes...

Cavity Wall Insulation

Make your home feel warmer

Cavity Walls

Simple Installation

Improve energy efficiency

Get more details →

Loft Insulation

Reduce heat loss

Cost effective

Wool insulation rolls

Save on energy bills

Get more details →

Under Floor Insulation

Improve Ground heat loss

Timber floors

Reduce heat loss

Improve homes warmth

Get more details →

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