Cavity Wall Insulation


Up to 30% of your homes heat loss comes from uninsulated cavity or solid walls, costing you money on your heating bills, encouraging damp and condensation creating an unhealthy living environment for you and your family.

Insulating your home with NSAI Certified Kore Kill Bonded Beads lowers your heating costs, prevents damp and condensation build up, increases the value of your home creating a warm, health living environment for you and your family.

Due to Ireland's commitment to reduce its emissions of harmful CO2, the government provides grants to home owners for cavity wall insulation, further reducing the cost of insulating your home. Under SEAI's Better Energy Homes Scheme a grant of €300 is available and a further €50 towards a BER. As registered SEAI contractors we can apply for these grants on your behalf. So how does cavity wall insulation work?

Cavity Wall Insulation Step By Step


Step 1. Determine if your house has cavity walls.


This is not too difficult as many home built in Ireland were built with cavity wall and most people know if they have them but if don't a simple site survey will quickly be able to determine if you do. We drill a exploratory bore hole in your wall and use a borescope test (an optical device) which enables us to view the cavity, its thickness and if there is any masonry or other obstructions within.


Step 2. Ventilation


Secondly, we take a look at your room ventilation to determine the adequacy of fresh air entering your home. Ventilation is critical for a healthy and comfortable living environment for you and your family. Each house should be upgraded so that ventilation complies with Part F of building regulation 2009 , for both background in habitable rooms and permanent ventilation for heat producing appliances (open fires , stoves ect) Part J for houses pre 2006. This can be referenced in ( NSAI S.R 54:2014 clause 10.2.2.1.1 Table 30 Background Ventilation ) ( NSAI S.R.54:2014 clause 10.2.2.1.1 Table 35 Permanent Ventilation ) ( NSAI S.R.54:2014 clause 10.2.2.1.1 Table 31 Intermittent Extract Ventilation for all wet rooms.


Step 3. Drill patern as per system designers


Each manufacture of bead has a specific drill pattern to guarantee the optimal efficiency of the cavity fill. We use Kore fill Diamond Bead, which is manufactured in Kilnaleck Co.Cava. Kore fill Diamond Bead has a thermal conductivity of 0.033W/mk, this will achieve 0.20W/m2k in a 150mm cavity to meet current building regulations. With a wider cavity for example 200mm we can achieve 0.15W/m2k. All our our installers are trained and carded to use Kore fill and have had many years experience.


Step. 4 Pumping the cavity wall with insulation


Once the hole have been drilled we start pumping the bonded beads into your walls. Once again there is a specific method specified by Kore as to how this is done and we adhere to these specifications. Cavity wall insulation completely fills the cavity removing the risk of insulation gaps . Thermal performance will not diminish over time.


Step. 5 Filling in the holes


Once the cavity has been filled with bonded beads and checked to make sure there are no gaps, we fill in the hole made during the drilling process. We first fill the holes with specially designed filler and then we paint the filled holes matching the colour of your home.


Commitment to excellence.

As installers we are audited by NSAI annually to verify that we comply with the NSAI approval scheme for cavity wall insulation scheme.

We are registered as approved installers by SEAI.

We are one of the founding members of the NIAIof Ireland which aims to raise standard in the insulation industry in Ireland.


Here is a map or the area we cover

Brusna Projects throughout the West

We are based on the Mayo Sligo boarder and have been insulating cavity walls in Co. Mayo for the past 25 years. Castlebar, Ballina, Westport, Claremorris, Ballyhaunis.

We have been insulating cavity walls across Co. Sligo and Sligo Town for the past 25 years. Contact us for more information.

We have been insulating cavity walls across Co. Donegal, Donegal Town and Letterkenny for the past 25 years. Contact us for more information.

We have been insulating cavity walls across Co. Galway, Galway City, Tuam, Aran Islands, Athenry, Ballinasloe, Claregalway, Clifden, Gort, Loughrea, Portumna, and Spiddal for the past 25 years. Contact us for more information.

We have been insulating cavity walls across Co. Roscommon, Roscommon Town, Castlerea, and Boyle for the past 25 years. Contact us for more information.

>We have been insulating cavity walls across Co. Leitrim, Carrick-on-Shannon, Manorhamilton, and Kinlough for the past 25 years. Contact us for more information.


Contact Us


Wall Insulation Grants

Under SEAI's Better Energy Homes Scheme a grant of €300 is available to insulate your walls and a further €50 towards a BER. As registered SEAI contractors we can apply for these grants on your behalf. For more information visit our grants page.


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At Brusna Energy Solutions we aim to meet the highest possible standards in everything we do. We adhear to the NSAI Standards.

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Leading role on sustainable energy structures, technologies and practices.

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NSAI (National Standards Authority of Ireland) is Ireland's official standards body.

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The KORE product range, nationwide installer network

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Leading role in raising standards within the heating industries of the UK and Republic of Ireland.

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We are member of NIAIIreland