Cavity Wall Insulation

Cavity wall insulation is regarded as one of the most effective ways to save on energy costs as over a third of all the heat lost in an uninsulated home escapes through the walls. Cavity wall insulation lowers your energy costs and helps reduce harmful emissions being released into the environment.

Ecosave are an accredited, approved ECO installer and are experts in cavity wall installation. We use only the top graded materials for our Cavity Wall installations:

How Do I Know If I Have Cavity Walls?

If your house was built after the 1920s, it is likely to have cavity walls. A cavity wall is made up of two walls with a gap in between, known as the cavity; the outer leaf is usually made of brick and the inner layer of brick or concrete block.

Homes built from the mid-1990s onwards are likely to have had cavity wall insulation completed at the build stage, however, if the guarantee has expired (which we can check) we can extract the old less efficient material and refill with the latest EPS Silver Bead.

60 Second Eligibility Check

Insulation Grants, Find out if you qualify now


Ecosave Installations Ltd provide a full, end to end in-house service that covers initial enquiry, home assessment, installation, and aftercare.

EPS Bead (Expanded Polystyrene)

EPS Bead (Expanded Polystyrene) is accepted as the most technologically advanced cavity wall insulation product in the market. It is installed in a very similar way to traditional fibre/wool insulation by using a drilling pattern and each hole is injected with the bead under compressed air. The bead (upon injection) is coated with a bonding agent so the beads stick together inside the cavity.

The beads typically fill the cavity wall very well and do not cause issues reminiscent of other cavity wall insulation materials. The cavity walls must be clear of debris and rubble prior to installation and the building fabric must be in good condition.

– We exclusively use EPS Silver Bead which is the very latest technology in cavity wall insulation.

– This new product is so superior to previous methods used that we regularly extract the inefficient outdated products of the past and refill using EPS Silver Bead

– Accreditation – EPS Silver Bead has been independently assessed for thermal performance, design and installation of the System according to BS EN ISO 69462, BR4433, BS 52505, BS 81026, BS 82157, BS EN 1996-1-18, UK NA to BS EN 1996-1-19

We have been at the forefront of this extremely effective measure since 2015 and have completed thousands of installations across Scotland.

Grants For Cavity Wall & Loft Insulation.


The process for install is simple, takes less than a day, and is conducted from the external areas of the property. Once complete it is extremely difficult to identify if cavity wall insulation has been completed.

This new product is so superior to previous methods used that we regularly extract the inefficient outdated products of the past and refill using EPS Silver Bead!


All of our installations are backed by the Cavity Insulation Guarantee Agency (CIGA) for a period of 25 years.

Cost and Savings

Typical installation costs can be  £1200 – £1600, however as Ecosave are an approved ECO 2020 installer, you may be eligible for a grant to cover 100% of the cost as well as making significant energy bill savings!

We will take care of everything and check to see if you are eligible.

Our Process

  • Complete Our No Obligation 60 second form and find out instantly if you may be eligible
  • We will contact you by phone for additional info and if you and your property meet the eligibility criteria for the Gov backed ECO scheme, we will arrange a free survey
  • A Surveyor will attend your home and conduct a free, no obligation property survey to ensure it is suitable for Cavity Wall Insulation application.
  • Our Surveyor can discuss the benefits of Cavity Wall Insulation and how it can help to reduce your heating bills by up to 35%, annual savings of up to £300 per year
  • We will discuss with you the available ECO funding to fully cover or part cover the installation costs.
  • We will also discuss the 25-Year Insurance Backed Guarantee that comes with the installation of your new Insulation System.
  • Once agreed, we will arrange a suitable installation date to carry out the work.