SEAI Windows & Doors Grant — Am I Eligible?

Roughly 70% of the Dublin, Kildare and Wicklow homeowners who phone us asking about the SEAI windows and doors grant qualify. The remaining 30% miss out on one of the five checks below — usually inadequate insulation or a post-2011 build. Here’s the honest walkthrough, plus the special situations (pensioners, rentals, listed buildings) the official SEAI page doesn’t spell out in detail.

Two important context points up front. First: you apply for the grant, not your contractor — we walk through the full application process in our step-by-step application guide. Second: the grant amounts are paid after install and a post-works BER, directly into your bank account by SEAI. We’re the registered installer; the cash flow is between you and SEAI.

Check 1: Was Your Home Built Before 2011?

The home must have been built and occupied before 1 January 2011. Homes built from 2011 onward fall under stricter Part L building regulations and don't qualify under this scheme — the assumption is they were already constructed to a higher energy standard.

Not sure of the build year? Check your title deeds, the BER cert, or the planning permission record on the local council planning portal. In greater Dublin and the home-counties commuter belt the vast majority of housing stock was built pre-2011 — only newer estates in Adamstown, Cherrywood, the Naas/Newbridge/Maynooth ring, and some new builds in Bray/Greystones fall outside.

Check 2: Do You Have Adequate Insulation?

The grant is for windows and doors specifically — but SEAI’s logic is that there’s no point upgrading windows if heat is escaping through the walls and attic faster than the new glazing can hold it. So you need adequate attic and wall insulation already in place. The official guidance (per the SEAI BER Advisory Report) sets minimum levels:

• Attic / loft: 300 mm of quilt insulation (or equivalent)
• External / cavity walls: insulated to a reasonable standard (specifics vary — the BER report will state explicitly whether your insulation is adequate)

If you don’t have it, the good news: insulation has its own SEAI grants. You can do the insulation first (or at the same time) and then claim the windows grant once the BER advisory report confirms adequacy. Many of our customers stack the two grants.

Already had insulation done in the past, even years ago? You still qualify — the insulation just needs to be in place, not done as part of the same project.

Check 3: Replacing Inefficient Windows or Doors?

The grant pays for upgrading existing inefficient products — typically single-glazed timber or first-generation 1990s/2000s uPVC double glazing. New-build installations (a brand-new opening that didn’t have a window before) don’t qualify; the scheme is specifically for retrofit upgrades. Replacing 30-year-old timber sash windows or chunky early-2000s uPVC casements is the textbook case.

Check 4: U-Value 1.4 W/m²K or Better

The new windows must achieve a U-value of 1.4 W/m²K or lower (lower = better). Modern A-rated uPVC double glazing hits ~1.2–1.4 W/m²K as standard. Triple glazing comes in at 0.8–1.0 W/m²K. Every window and door we install meets or exceeds this spec — you don’t need to verify it separately. Our quotes always state the U-value in writing so it’s on record for the application.

Check 5: SEAI-Registered Contractor

The work must be carried out by an SEAI-registered contractor. SEAI publishes the full list on its website — before signing anything, search the company name. Airtight Window Systems is SEAI registered. Our registration number goes on every quote so you can verify before applying.

Special Situations — the Cases the SEAI Page Doesn’t Spell Out

Pensioners

Pensioners receive the same grant amounts as everyone else under the Better Energy Homes scheme. Separately, SEAI’s Warmer Homes Scheme can pay for 100% of the upgrade for homeowners on certain qualifying social-welfare payments — including the State Pension (Contributory or Non-Contributory) combined with Fuel Allowance. If you receive Fuel Allowance, contact SEAI directly first; Warmer Homes covers windows AND insulation under one application. Not all pensioners qualify for Warmer Homes, but it’s worth checking before applying for the standalone grant.

Rental properties

Yes — landlords can apply for the grant on rental properties they own. The home must still meet the pre-2011 and insulation criteria. The grant is paid to the property owner, not the tenant. Many landlords stack window grants with the Residential Tenancies Board energy improvement requirements.

Listed buildings & Protected Structures

Eligible for the grant if planning permission has been granted for the window replacement. Conservation Areas (Rathmines, Phibsboro, Inchicore parts) typically require sash-style or heritage-profile windows. The U-value standard still applies; modern slim-sightline sash windows in uPVC or aluclad hit 1.2–1.4 W/m²K, so they qualify both aesthetically and thermally.

Already had insulation done years ago

Fine. The insulation just needs to be in place at the time of the windows install. It doesn’t have to be done together, doesn’t have to have been a previous SEAI grant project, and doesn’t have to have been done in any particular timeframe.

Mid-renovation

You can absolutely combine the windows grant with other SEAI grants — attic insulation, heat pump, solar PV, even external wall insulation. Doing them together typically saves on contractor mobilisation and BER assessor visits. Just remember each measure has its own application; the windows grant doesn’t auto-include the others.

Common Rejection Reasons We See

• Inadequate attic insulation — under the 300 mm standard. Fix it (with another SEAI grant!) then apply for windows.
• Cavity walls not insulated — same fix.
• Build year confusion — homes finished in 2010 but first occupied in 2011 sometimes get queried. Get your title deeds ready.
• Pre-existing A-rated windows — if your windows already perform near the threshold, the upgrade benefit isn’t there. Rare but happens with mid-2010s installs.
• Non-registered contractor — obvious but it happens. Always verify on seai.ie before paying a deposit.

Eligible? Here’s What You Get

The Bottom Line

If your home was built before 2011, has decent attic and wall insulation, and your existing windows are single-glazed or first-generation double glazing — you almost certainly qualify. The most common failure point is insulation, which has its own SEAI grant; do that first and the windows grant becomes available.

Ready to apply? Follow our step-by-step application guide. Want to see the full grant amounts and our role as your installer? See the main SEAI grant page. Want us to confirm eligibility before you apply? Call 01 822 8982 — Owen confirms eligibility on every survey before quoting.