Bead Cavity Wall Insulation Installers

Instantly Reducing Heat Loss by 30%

Create a warmer, more comfortable home, cut your energy bills and make the right choice for the environment with Cavity Wall Insulation from Instant Eco Homes. 

Most Irish homes built after 1930 have two layers of block – an inner load bearing wall and an outer layer, with a cavity in between (between 50mm and 110mm). This means there is little thermal insulation and heat easily escapes. With Cavity Wall Insulation, expanded polystyrene beads (EPS) are injected into the cavity, along with a water-based adhesive to bind the beads. This traps the warm air in and prevents air from circulating around the cavity. 

The EPS beads injected are between 2mm to 8mm and spherical – to ensure a full fill with no gaps, keeping warmth in. We use only NSAI-certified Envirobead Plus EPS beads, with a thermal conductivity of 0.033 W/m2K. 

How is it Installed? 

We install CWI from the outside of your home, for as little inconvenience to you as possible. There is minimal mess, and we carry out a full clean-up. Best of all, it takes just one day to complete. 

To access the cavity, we drill a series of 22mm holes on the outside of your home. We locate the holes following the pattern set down by the NSAI Agreement Certificate, ensuring we fully fill the cavity. We then place an air compression injection nozzle in each hole and the EPS beads are injected into the cavity with a consistent layer of adhesive. Finally, we fill the holes with colour-matched mortar or render before a quality Instant Eco Homes auditor assesses the work to make sure it meets the required NSAI standard. 

Why Choose Cavity Wall Insulation?

Cavity Wall Insulation is one of the quickest and most cost-effective ways to upgrade the insulation in your home.

You instantly enjoy a warmer, cosier home. Walls feel instantly warmer, reducing condensation and mould build-up, making sure your family are breathing cleaner air. 

Cavity Wall Insulation can reduce your heat loss by 30%.

Sustainable Energy Authority of Ireland (SEAI) offers grants of up to €1,700 to help you enhance your home’s energy efficiency with Cavity Wall Insulation. 

Cavity Wall Insulation can be used on new builds as well as retrofitted to your existing home. 

Using Cavity Wall Insulation will help you achieve nearly Zero Energy Building (nZEB) standard – which is becoming increasingly important in both the building and retrofitting of homes. You’ll meet strict energy efficient regulations and reduce your energy consumption and carbon footprint.

We make sure every void or gap in walls is filled, minimising heat loss.

Cavity Wall Insulation is made of sustainable, recyclable materials that have a long life-span – so you enjoy energy-savings and warmth for many years to come. 

There’s little disruption to your household and no need to remove internal wall finishes. 

Can I Get a Grant for Cavity Wall Insulation? 

All homeowners, including landlords, whose homes were built and occupied before 2011 can get a Sustainable Energy Authority of Ireland (SEAI) Government-Aided Grant.  

  • Grants are issued ONCE per property for each type of works. 
  • SEAI grants cover around 80% of insulation upgrade costs – depending on the size/specification of your home. 
Type of Home Value
Semi-detached or End of Terrace€1,200
Detached House€1,700
SEAI Grant Table

Talk to us today

Find out if your home is suitable for Cavity Wall Insulation. We’ll carry out a FREE and comprehensive Survey Report of your home, without obligation. 


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