Question 1

How much does insulation cost in Ireland?

Accepted Answer

Attic insulation costs €500–€1,500. Cavity wall insulation costs €1,000–€2,500. External wall insulation (EWI) costs €6,000–€15,000 for a standard semi-detached. SEAI grants can cover a significant portion of costs.

Question 2

What SEAI grants are available for insulation in Ireland?

Accepted Answer

Under the Better Energy Homes scheme, SEAI offers grants of €1,500 for attic insulation, €1,700 for cavity wall insulation, and up to €8,000 for external wall insulation. You must use a registered contractor.

Question 3

Will insulation improve my BER rating in Ireland?

Accepted Answer

Yes. Improving your insulation is one of the most effective ways to increase your BER rating, which increases property value and reduces energy bills. Most homes improve by 1–3 BER grades after a full insulation upgrade.

Question 4

How long does insulation installation take?

Accepted Answer

Attic insulation takes 1 day. Cavity wall insulation takes 1–2 days. External wall insulation is a larger project taking 1–3 weeks depending on house size. Your contractor will give an exact timeline.

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