All attic insulation guides & grant check
Use the grant check first, or jump straight to the guide on costs, depths, hatches, rafters, condensation, spray foam or your county.
Free, no obligation. One SEAI-registered contractor prices it, not five.
- €2,000SEAI attic grant for a detached house
- €2,500at the higher rate
- €300 to €600typically left to pay on a semi-D
- 300 mmof wool: what SEAI's standard takes
Your attic grant and what's left to pay
Two taps: your home, and which rate fits you. The answer is SEAI's fixed grant and its own median cost for the job.
Your SEAI attic insulation grant
€1,500
- SEAI median cost, Jan to Jun 2026
- €2,101
- Left to pay at the median
- €601
SEAI's fixed grant for a semi-d or end of terrace at the standard rate is €1,500. SEAI's median cost for attic insulation on a semi-d or end of terrace from January to June 2026 was €2,101. €2,101 less €1,500 leaves about €601. Our sum; your quote can be higher or lower.
Send this for a real priceHow this is worked out
The grant is SEAI's fixed amount for that home type and rate, as Citizens Information lists it. The median cost is SEAI's own figure from grant-funded attic jobs completed between January and June 2026; the PDF doesn't say whether VAT is in. Left to pay is the median less the grant, our sum. The home must have been built and lived in before 2011, the contractor must be on SEAI's register, and SEAI must approve the grant before work starts. It's an estimate, never a quote.
Every attic insulation guide on this site
- Attic insulation grant amounts 2026Every attic grant rate in one table, and what changed in 2026 by date.
- Attic insulation costSEAI's median cost by home type, before and after the grant.
- How to apply for the grantSix steps, the MPRN, and the rule that loses people the grant.
- Roof and rafter insulation grantRafters, rooms in the roof and flat roof extensions: the whole-roof rule.
- How thick should attic insulation be?300 mm, 200 mm, blown wool or boards: what reaches SEAI's standard.
- Attic hatch insulationWhy the hatch matters, and what SEAI makes the contractor fit.
- Spray foam attic insulationVentilation, timbers, resale: read this before anyone sprays your roof.
- Free attic insulationThe Warmer Homes Scheme: who gets it for nothing, and the wait.
- Floored attic insulationBoards, storage and the 50 mm air gap: how a floored attic gets to 300 mm.
- Condensation after insulationWhy a colder attic gets damp, and the ventilation SEAI asks for.
- Is attic insulation worth it?How much heat goes out the roof, what you save and how fast it pays back.
- DIY attic insulationNo grant for doing it yourself. What the registered contractor does that you'd have to.
- Questions18 answers on SEAI attic grants, costs and ventilation.
- Glossary15 attic insulation and SEAI grant terms explained.
- Attic insulation by countyRoofs on 586,283 BER certificates, county by county.
Your attic grant and a price, in 4 taps
Tap your home, when it was built, what's in the attic now and who you are. Then leave your number and one SEAI-registered insulation contractor who covers your area rings you to look at the attic and price it in writing.
Every guide, calculator and county page
Jump straight to any specification guide, our interactive calculator, the technical glossary or your county page.
Price & Specification Guides
- Attic insulation grant amounts 2026
- Attic insulation cost
- How to apply for the grant
- Roof and rafter insulation grant
- How thick should attic insulation be?
- Attic hatch insulation
- Spray foam attic insulation
- Free attic insulation
- Floored attic insulation
- Condensation after insulation
- Is attic insulation worth it?
- DIY attic insulation
Calculator, FAQ & Glossary
Related 2026 Ireland Specialist Cost & Technical Guides
Cross-referenced Irish pricing benchmarks, SEAI/Revenue grant rules, and county specifications from partner reference hubs:
- Cavity Wall Insulation (cavitywallinsulation.ie) — 2026 Ireland Cost & Spec Guides: SEAI cavity wall insulation grant check for Irish homes: the grant by house type, what the work typically costs after the grant, and a callback from o
- Cavity Wall Insulation Grants (cavitywallinsulationgrants.ie) — 2026 Ireland Cost & Spec Guides: The SEAI cavity wall insulation grant in Ireland, explained as a grant: the fixed amount by house type (detached EUR 1,800, semi-detached or end of te
- Wall Insulation Grants (wallinsulationgrants.ie) — 2026 Ireland Cost & Spec Guides: The three SEAI wall insulation grants side by side for Irish homes: cavity (EUR 700-1,800, higher rate up to EUR 2,300 for certain welfare recipients
- External Insulation Grant (externalinsulationgrant.ie) — 2026 Ireland Cost & Spec Guides: The SEAI external wall insulation grant (EUR 8,000 detached, 6,000 semi-D or end of terrace, 3,500 mid-terrace, 3,000 apartment) against the visitor's
- Midland Insulation (midlandinsulation.ie) — 2026 Ireland Cost & Spec Guides: Home insulation and SEAI insulation grants across the Irish Midlands (Laois, Offaly, Westmeath, Longford, Roscommon, Kildare, Tipperary and Meath) and