County Donegal · SEAI attic grant
Attic insulation in Donegal
The SEAI attic grant is the same in Donegal as everywhere: €2,000 detached, €1,500 semi-D, €1,400 mid-terrace, €1,100 apartment. Of 23,579 BER certificates for Donegal houses built before 2011, 24% show a roof at SEAI's standard, 7th lowest of 26 counties.
Attic, rafter and roof insulation across Donegal, including Letterkenny, Buncrana, Ballybofey, Carndonagh, Donegal and Bundoran. Send 4 answers and it goes to one SEAI-registered insulation contractor who covers your area.
Free, no obligation. One SEAI-registered contractor prices it, not five.
- 24%of Donegal's pre-2011 roofs at SEAI's standard
- €2,000SEAI grant for a detached house
- €1,500for a semi-D or end of terrace
- €300 to €600typically left to pay on a semi-D
Donegal's roofs
What's in Donegal's attics now
Donegal
Ireland
- 0.16 or better: SEAI's standard
- 0.17 to 0.30
- 0.31 to 1.99: some insulation
- 2.0 or more: none recorded
Donegal's houses have big roofs: the median on a pre-2011 BER is 75 m², against 63 m² nationally. More ceiling to cover means more insulation, and the fixed grant is the same.
23,579 certificates for houses built before 2011, grant BERs left out,. Each shows the house on the day it was rated. Bands and shares are our sums.
By age
Older and newer houses in Donegal
| When the house was built | Donegal: roof at standard | Donegal: certificates | Ireland: roof at standard |
|---|---|---|---|
| Built before 1978 | 16% | 6,224 | 17% |
| 1978 to 1993 | 37% | 3,541 | 36% |
| 1994 to 2010 | 25% | 13,814 | 26% |
Share of certificates with a roof U-value of 0.16 or better, by when the house was built. Across Ireland, houses from 1978 to 1993 are more often at standard than newer ones: many were topped up since.
Roof types
How Donegal's roofs are built
| Main roof | Donegal | Ireland |
|---|---|---|
| Insulated at ceiling level (attic floor) | 87% | 87% |
| Insulated at the rafters | 8% | 6% |
| Room in the roof | 4% | 5% |
| Flat roof | 1% | 2% |
Predominant roof type on each certificate. Rafters, rooms in the roof and flat roofs follow the whole-roof rule.
Homes and heating
Homes, heating and weather in Donegal
Census 2022 households by year built and central heating, our sums. Degree days measure how much heating a place needs; ours are worked out from Met Éireann's 1991 to 2020 grid.
Grant and cost
The grant and the cost in Donegal
| Home type | SEAI median cost | Standard grant | Left to pay |
|---|---|---|---|
| Detached house | €2,700 | €2,000 | €700 |
| Semi-D or end of terrace | €2,101 | €1,500 | €601 |
| Mid-terrace | €2,200 | €1,400 | €800 |
| Apartment | €1,515 | €1,100 | €415 |
Median cost of grant-funded attic insulation, January to June 2026. Left to pay is the median less the grant: our sum.
SEAI's grants and median costs are national: there's no Donegal rate. A bigger roof than the median (75 m² in Donegal) usually means a higher price.
Compared
Donegal against every county
Share of pre-2011 houses with a roof at 0.16 or better.
Grant check
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.
Your grant
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.
FAQ
Donegal questions
How much is the attic insulation grant in Donegal?
The same as everywhere in Ireland: €2,000 detached, €1,500 semi-D, €1,400 mid-terrace, €1,100 apartment, and up to €2,500 at the higher rate.
How many Donegal attics are insulated to standard?
24% of 23,579 BER certificates for Donegal houses built before 2011 show a roof U-value of 0.16 or better; 6% show none.
Do you cover all of Donegal?
Yes. Requests from Letterkenny, Buncrana, Ballybofey and the rest of Donegal go to one SEAI-registered insulation contractor who covers your area.
What does attic insulation cost in Donegal?
SEAI's national median for January to June 2026 is €2,101 for a semi-D and €2,700 detached; about €601 and €700 after the grant.
Nearby figures
Counties with similar roofs, and every county
- Attic insulation grant Westmeath25% of older roofs at standard; median U-value 0.26.
- Attic insulation grant Meath25% of older roofs at standard; median U-value 0.26.
- Attic insulation grant Roscommon24% of older roofs at standard; median U-value 0.26.
- Attic insulation by countyRoofs on 586,283 BER certificates, county by county.