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Bonded Bead Cavity Wall Insulation
Seal in warmth and stop paying to heat the outdoors
Insulation you’ll never see — but always feel
What is bonded bead insulation?
Bonded bead is a high-performance cavity wall insulation system made of graphite-enriched polystyrene beads, injected into the wall cavity along with a bonding agent. Together, they form a seamless thermal barrier that significantly reduces heat loss through your walls — making your home warmer, drier, and more efficient.
Where is it used?
- Homes with uninsulated cavity walls (common in homes built before 2006)
- Properties with wide enough cavities (typically 50mm+)
- Upgrades for homes with older board-type wall insulation
Not sure what’s in your walls? Our local surveyors can check and confirm if bonded bead is suitable — and show you how it performs against modern insulation standards.
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Save on Heating
Reduce wall heat loss by up to 35% and save €300–€500 per year
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One-Day Install
Most homes completed in less than a day — no mess, no fuss
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SEAI Grant Approved
Full grant support available for qualifying homes
How the process works
Professional installation by certified technicians
- 20mm holes drilled in external walls (size of a €0.20 coin)
- Bonded bead injected evenly into the cavity using pressurised equipment
- Holes filled and colour-matched after injection
- No disruption inside your home — just a warmer house by the evening
On most homes, installation takes just a few hours. You’ll start feeling the benefits the same day.
What customers say
“Premier insulated our home with bonded bead — we felt the difference immediately. House holds the heat now and the BER went up.”
— A. Keane, Kildare
“Quick, clean and very professional. We saw the exact same holes sealed before the lads left. Can’t believe how much warmer the place is.”
— C. Moloney, Tipperary
Why choose Premier?
- Over 30 years of cavity wall insulation experience
- Thousands of homes insulated with bonded bead across Ireland
- Certified by NSAI, SEAI, and fully ISO accredited
- Members of the National Insulation Association of Ireland (NIAI)
- Surveyors in every county and dedicated local install crews
You’ll always deal with a trained team — no subcontractors, no shortcuts.
Grant funding available
SEAI grants of up to €1700 are available for cavity wall insulation — depending on your home type and eligibility. As an SEAI-approved contractor, we’ll help you apply and guide you through the process, including BER requirements and before/after documentation.
Local references on request
We’ve insulated homes in every town in Ireland — and can put you in touch with homeowners near you who’ve had bonded bead installed by our team. You don’t have to take our word for it — check the results for yourself.
Book your cavity wall insulation survey
Our local surveyor will inspect your walls, explain how bonded bead works, and show you exactly what you could save. There’s no cost and no pressure — just expert advice.
Quick answers
Is bonded bead better than board insulation?
Yes — bonded bead flows into every corner and fully fills the cavity. It's more effective and longer lasting than old board-type insulation.
Can I get a grant?
Most likely — SEAI grants are available for cavity wall insulation. We’ll confirm eligibility and handle the paperwork.
Will it cause damp or moisture problems?
No — bonded bead is water-resistant and breathable. It reduces the risk of condensation by keeping internal surfaces warmer.
How long does installation take?
Most homes are completed in 3–5 hours. Larger homes may take a full day.
Do I need to move out during installation?
No — all work is done externally. You can stay home and carry on with your day as normal.