Apartment
€3,100
combined maximum
Windows
€1,500
Doors
€1,600
Pre-2011 apartments with adequate insulation. Up to two external doors.
Updated 26 June 2026 · 2026 grant figures verified against seai.ie
Up to €4,000 for windows + €1,600 for doors on detached homes. Owen confirms eligibility on the survey before quoting, so you know exactly what you can claim before applying.
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SEAI Registered
Government-registered grant contractor since 2018
A-Rated Energy
BFRC A++ certified glazing as standard
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Multi-point locks · Garda-recognised security spec
23 Years · 5,247 Homes
Family-owned since 2003 · Dublin, Kildare, Wicklow
The windows and doors grant is the SEAI Better Energy Homes grant for replacing inefficient windows and doors with A-rated alternatives. Available to Irish homes built before 2011, the SEAI window grants pay up to €4,000 and the door grant pays €800 per external door (maximum two doors) — combined maximum of €5,600 for a detached home in 2026.
Since 2024 the grant is available as a standalone measure — no One Stop Shop bundling required. You apply yourself via the SEAI online portal at seai.ie, the work is carried out by an SEAI approved window installer (like us), and the grant is paid directly into your bank account after a post-works BER. The full step-by-step process is in our SEAI grant application guide.
Airtight is an SEAI-registered installer for Dublin, Kildare and Wicklow. We’re the contractor that makes the install qualify; you handle the application and receive payment. Before quoting, run our 5-minute SEAI grant eligibility check — it covers pre-2011 build date, insulation requirements, U-value spec and edge cases like pensioners and listed buildings.
Max grant
Per home on a detached property in 2026
Build year
Home must be built and occupied before 2011
U-value (W/m²K)
Required spec — all our windows hit it
Standalone since
No One Stop Shop required — apply directly
The amount depends on your home type. Doors are €800 each, maximum two per home (€1,600). Window grants range from €1,500 to €4,000. See the full net cost by home type with real fitted prices.
Apartment
combined maximum
Windows
€1,500
Doors
€1,600
Pre-2011 apartments with adequate insulation. Up to two external doors.
Mid-Terrace
combined maximum
Windows
€1,800
Doors
€1,600
Pre-2011 terraced homes — Victorian terraces, 1950s rows, urban infill.
Semi-Detached
combined maximum
Windows
€3,000
Doors
€1,600
Most common Dublin housing type. Includes end-of-terrace homes.
Detached
combined maximum
Windows
€4,000
Doors
€1,600
Maximum grant — typically rural sites and larger suburban detached homes.
Grant amounts are maximums and subject to SEAI confirmation. Figures correct as of May 2026 per seai.ie.
There are five requirements for the SEAI windows and doors grant — all must be true to qualify. If you’re unsure on any, walk through our deeper 5-minute eligibility check — it covers pensioners, rentals, listed buildings and other edge cases.
Your home must have been built and occupied before 1 January 2011. Homes from 2011 onward were constructed to higher energy standards and don’t qualify.
Attic insulation of 300 mm (or equivalent) and reasonable wall insulation. If you don’t have it, insulation has its own SEAI grant — do that first.
You’re upgrading existing single-glazed or first-generation double-glazed windows / doors. New-build openings don’t qualify.
New products must hit U-value ≤1.4 W/m²K. Every window and door we install qualifies as standard. Spec is in writing on every quote.
The work must be carried out by an SEAI-registered installer — the grant only pays out otherwise. Airtight is registered; our number is on every quote so you can verify on seai.ie before signing.
Realistic timeline: 3–4 months end-to-end. Click any step for detail. Read the full process guide for what to do, what we do, and what trips most homeowners up.
Search the contractor on seai.ie before signing. The grant only pays out if the work is done by a registered installer. Airtight is registered — our number is on every quote.
You apply yourself via the SEAI online portal — contractors cannot submit on your behalf. Application is free, takes 15–30 minutes, asks for home details, BER, contractor reference, bank account.
SEAI emails a formal grant offer in 2–4 weeks. Starting any installation before this offer arrives forfeits the grant entirely — no exceptions. This is the #1 mistake we see.
Once your offer is in, give us the go-ahead. A typical 3-bed semi full-house install takes 3 days on site. Installed U-values must match the quote for the grant to pay.
A registered BER assessor visits after install and issues an updated BER cert. Cost €150–€200, paid by you, reimbursable as part of the grant. We can recommend assessors.
Upload our final invoice, proof of payment, and the post-works BER to your SEAI portal account. SEAI reviews the claim — 5–10% of homes get a physical inspection before payment.
Once approved, SEAI transfers the grant directly to your bank account, typically within 4–6 weeks of submitting the final claim. End-to-end: 3–4 months from first quote.
Most homeowners trip up on eligibility or the SEAI application order. These two deep guides cover both — read them before signing any contractor quote.
5-minute walk-through covering pre-2011 build date, attic and wall insulation thresholds, U-value spec, pensioners, rentals, listed buildings and other edge cases. Confirm you qualify before paying a contractor for a survey.
Check eligibility Step 2Step-by-step walkthrough of the SEAI online portal — what to upload, when to do it, what NOT to do before the grant offer lands (the #1 mistake forfeits the entire grant), and how to claim payment after the post-works BER.
See application guideNot every window installer is SEAI registered, and fewer still understand the grant process from the inside. Here’s what makes working with Airtight different.
Our SEAI registration number is on every quote. You can verify it on seai.ie before signing anything.
Every window and door we install hits U-value 1.0–1.4 W/m²K — well inside SEAI thresholds. Spec is documented in writing.
Family-owned since 2003. Over 5,247 homes completed across Dublin, Kildare and Wicklow. SEAI inspectors know our work.
No call centres. Owen confirms eligibility on the survey, quotes within 24 hours, and books installation around the SEAI offer timeline.
Our window & door systems
5.0 ★ from verified Google reviews · 23 years installing across Ireland
Local installer with a 23-year track record across 26 towns and suburbs. Owen responds within 24 hours and arranges free surveys for the earliest available appointment.
Tallaght, Lucan, Clondalkin and the M50 corridor — free survey, booked for the earliest available slot.
Bray, Greystones and the East Wicklow coast — coastal-spec uPVC available.
Naas, Newbridge, Maynooth — North Kildare commuter-belt specialists.
Don’t see your area? Give us a call — we cover most of Dublin, Kildare and Wicklow.
The questions Dublin, Kildare and Wicklow homeowners ask us most about the SEAI grant. Owen confirms eligibility on every survey before quoting.
There are five requirements for the SEAI windows and doors grant in 2026: (1) your home was built and occupied before 2011; (2) it has adequate attic (around 300 mm) and wall insulation already in place; (3) you are replacing inefficient existing windows or doors — single-glazed or first-generation double glazing, not new-build openings; (4) the new windows achieve a U-value of 1.4 W/m²K or better; and (5) the work is carried out by an SEAI-registered contractor. Meet all five and you can claim up to €4,000 for windows and €1,600 for doors (€5,600 combined) depending on home type. You apply yourself at seai.ie before work starts; Airtight is the SEAI-registered installer that makes the spec qualify.
The windows and doors grant is the SEAI Better Energy Homes grant for replacing inefficient single-glazed or first-generation double-glazed windows and external doors with A-rated alternatives. Available to Irish homes built and occupied before 2011, the windows and doors grant pays up to €4,000 for windows and €800 per external door (maximum two doors, €1,600 combined) — a combined maximum of €5,600 per home in 2026. Since 2024 it is available as a standalone measure, so you no longer need a One Stop Shop. Apply yourself at seai.ie and use an SEAI-approved installer (like Airtight) to carry out the work.
Yes — SEAI window grants and SEAI door grants are separate amounts under the same Better Energy Homes scheme, claimable together on a single application. SEAI window grants pay €1,500–€4,000 depending on home type (apartment, mid-terrace, semi-detached or detached). SEAI door grants pay a flat €800 per external door, capped at two doors per home (€1,600 maximum). You can claim both SEAI window grants and SEAI door grants in the same application — most Airtight customers upgrade windows and front/back doors at the same time to maximise the combined €5,600.
Search the SEAI Registered Contractor database at seai.ie/grants/find-a-contractor before signing any quote — the grant only pays out if work is completed by an SEAI approved window installer. Filter by county (Dublin, Kildare, Wicklow etc.) and measure type (windows, doors). Every SEAI approved window installer must hold valid public liability insurance, supply A-rated products with documented U-values ≤1.4 W/m²K, and provide a contractor reference number you enter on your SEAI application. Airtight Window Systems is an SEAI approved window installer for Dublin, Kildare and Wicklow — our registration number is printed on every quote. Confirm you qualify on our eligibility page at airtight.ie/seai-grant-eligibility/ and walk through the full application steps at airtight.ie/seai-grant-application/.
The SEAI window grant pays up to €4,000 for a detached home, €3,000 for semi-detached and end-of-terrace, €1,800 for mid-terrace, and €1,500 for apartments. The SEAI door grant pays €800 per external door (maximum two doors), an additional €1,600 — bringing the combined maximum from both SEAI grants for windows and doors to €5,600 for a detached home.
Yes. The SEAI grants for windows and doors remain open in 2026 under the Better Energy Homes scheme, with the same grant levels as 2025 (€1,500–€4,000 for windows, €800 per door up to two doors). Since 2024 the grants are available as standalone measures — you do not need a One Stop Shop or bundled package. Apply directly at seai.ie using an SEAI-registered installer like Airtight.
You apply yourself via the SEAI online portal at seai.ie. Contractors cannot apply on your behalf. The grant is paid directly into your bank account after installation and post-works BER. Airtight provides the documentation you need (SEAI registration number, U-value spec, invoice, BER assessor recommendation) but the application itself is yours.
If your home was built and occupied before 2011, has adequate attic and wall insulation, and you’re replacing inefficient existing windows or doors, you almost certainly qualify. Use our 5-minute eligibility check at /seai-grant-eligibility/ to confirm before applying.
Yes. The insulation just needs to be in place — it doesn’t have to be done at the same time as the windows or through a previous SEAI grant. Already-insulated homes qualify on the same terms as those upgrading insulation now.
No. Since 2024 the windows and doors grant is available as a standalone measure. You don’t need a One Stop Shop and don’t need to bundle it with other upgrades. You can apply directly via seai.ie and use a single registered contractor like Airtight.
New windows must achieve a U-value of 1.4 W/m²K or lower. Modern A-rated uPVC double glazing hits ~1.2–1.4 W/m²K as standard. Triple glazing hits 0.8–1.0. Every window we install meets or exceeds this spec — the U-value is stated in writing on every quote.
Realistic end-to-end timeline: 3–4 months from first quote to grant payment. Breakdown: quotes 1–2 weeks, SEAI application 30 minutes, wait for grant offer 2–4 weeks, manufacturing 4–6 weeks, install 1–3 days, post-works BER 1 week, SEAI payment review 4–6 weeks.
Possibly under the SEAI Warmer Homes Scheme, which covers 100% of the upgrade cost for homeowners on qualifying social-welfare payments (including State Pension combined with Fuel Allowance). Warmer Homes also covers insulation. If you receive Fuel Allowance, contact SEAI directly to check eligibility before applying for the standalone grant.
Yes. The grant is nationwide. Airtight covers Dublin, County Wicklow and County Kildare — we’re an SEAI-registered installer for all three counties.
Two deeper guides for homeowners thinking about the SEAI grant, plus our most-read installer comparison.
SEAI grantStep-by-step 2026 guide to applying for the SEAI windows & doors grant — who applies (you, not the contractor), the SEAI online portal, post-works BER, and the realistic 3–4 month timeline from quote to payment.
Read article
SEAI grantA 5-question eligibility check for the 2026 SEAI windows & doors grant — pre-2011 home, insulation, U-value, plus the special cases (pensioners, rentals, listed buildings) the official SEAI page doesn’t spell out.
Read articleBuyer’s guideSide-by-side comparison of uPVC and composite doors for Irish homes — real prices (€900–€2,400 + VAT), U-values, security ratings, lifespans, and exactly which one suits the front and back doors of a typical Dublin semi.
Read articleOur certified installer will visit your home, measure precisely, explain your options, and provide a detailed quote-all in about 30 minutes. No pressure, no obligation, no pushy sales tactics. Just honest advice from Dublin's most trusted window experts.
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