Windows grant readiness guides, check and reference
Every guide to passing the Heat Loss Indicator test, reading your BER Advisory Report, insulating first and claiming the SEAI windows and doors grant.
Free, no obligation. One registered contractor prices it, not five.
- Below 2.3HLI required
- €4,000windows, detached
- 15glossary terms
- 9readiness guides
Getting ready, step by step
Every guide on this site.
Is your home ready for the windows grant?
Four quick taps. You see where your home stands, what has to come first and every grant on the way. Your number is only asked for at the end, if you want a price.
A semi-D with the attic done and cavity walls never filled: 1 step first, the €1,300 cavity grant, then €3,000 for the windows and up to €1,600 for two doors.
How this is worked out
SEAI's windows and doors grant needs a Good or Very Good Heat Loss Indicator on the BER Advisory Report after the work, which SEAI says an HLI below 2.3 meets. Attic and wall insulation rated Good or Very Good on your report means you meet the standard. The grants are SEAI's fixed amounts for your home type, and the doors grant is shown for two doors. The check is a guide: a BER assessor and SEAI decide.
Tools and reference
| Resource | What's inside | How it helps |
|---|---|---|
| Interactive Ready Check | 4-tap readiness tool | Pick your home type, attic, walls and county to see what comes first and every grant on the way. |
| Master FAQ Hub | 17 questions answered | Straight answers on the 2.3 HLI rule, BER reports, solid walls and stacking grants. |
| Windows & BER Technical Glossary | 15 terms defined | Plain-English definitions of HLI, U-values, warm-edge spacers, trickle vents and BER reports. |
Questions people ask
Can I apply for the windows grant and the external doors grant at the same time?
Yes. Under the SEAI Individual Energy Upgrade scheme, a qualifying home with a Good or Very Good Heat Loss Indicator on its BER Advisory Report can claim the full window replacement grant (€1,500 to €4,000 by house type) plus €800 per new external door up to two doors (€1,600 maximum) in the same application.
Do I have to replace every single window in the house to get the SEAI grant?
Under SEAI technical rules for the windows grant, all existing single-glazed or older poorly performing windows in the heated envelope of the dwelling must be brought up to the required U-value standard so the building fabric performs as a complete thermal envelope.
Does the SEAI grant cover replacing a sliding patio door or French doors?
Glazed patio, sliding, and French doors are generally classified under the glazing/window package or counted toward the external door allowance depending on the glass-to-frame ratio and how the BER assessor and registered contractor record the openings on the Declaration of Works.
What happens if my BER says my Heat Loss Indicator is Poor or Fair?
If your BER Advisory Report lists the Heat Loss Indicator as Poor or Fair, you cannot claim the standalone windows grant directly. You first complete the recommended attic or wall insulation—using the separate SEAI insulation grants—and then use the updated post-works BER to qualify for the windows and doors grant.
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
Calculator, FAQ & Glossary
Check your home in four taps
Where you stand, what comes first and every grant on the way. Then, if you want, one SEAI-registered contractor who covers your county rings with a price.