If you’ve been thinking about replacing your French doors and want to know whether the SEAI grant covers them – the short answer is yes, they can qualify. But there are conditions, and not every door or every home will meet them.
This post breaks down exactly what SEAI requires for doors, how much you can claim, and what Thermoglaze French doors offer that makes them a strong fit for the scheme.
What Is the SEAI Windows and Doors Grant?
The Sustainable Energy Authority of Ireland (SEAI) launched a new grant scheme on 27th January 2026 to support homeowners replacing outdated, inefficient glazing with high-performance alternatives. It covers both windows and external doors, including French doors, provided the installation meets the required energy performance standards.
Thermoglaze is an SEAI-registered installer, which means we can carry out work that qualifies under the scheme and guide you through the application process from start to finish.
Want to check your eligibility now? Call us on 01 912 0600 or request a free quote online.
How Much Is the SEAI Door Grant?
The grant covers up to €800 per external door, for a maximum of two doors per property. This means you can claim up to €1,600 on doors alone if you’re replacing two qualifying doors.
The total grant available also depends on your property type:
| Property Type | Windows Grant | Doors Grant (Max 2 Doors) |
| Apartment | Up to €1,500 | €800 per door |
| Mid-Terrace | Up to €1,800 | €800 per door |
| Semi-Detached / End-of-Terrace | Up to €3,000 | €800 per door |
| Detached | Up to €4,000 | €800 per door |
For a detached home replacing windows and two doors, the total available grant support can reach €5,600. Check the full breakdown on our SEAI grant page.
Do French Doors Qualify for the Grant?
Yes – French doors can qualify as external doors under the SEAI scheme. However, they need to meet specific thermal performance requirements, and your home as a whole needs to pass certain energy efficiency tests after the work is completed.
The Key Requirements for Door Eligibility
- U-value of ≤ 1.4 W/m²K – this is the thermal performance benchmark every qualifying door must meet or exceed
- The door must be replacing an existing inefficient external door
- Installation must be carried out by an SEAI-registered contractor
- Your property must have been built and occupied before 2011
- You must be the property owner and have a valid MPRN (electricity meter number)
Thermoglaze French doors are designed with high-performance glazing – available in both 28mm double-glazed and 36mm triple-glazed options – meaning they are built to meet and exceed the U-value threshold the SEAI requires.
What Makes Thermoglaze French Doors Grant-Ready?
Not all French doors on the market will meet SEAI’s thermal requirements. Here’s what sets Thermoglaze’s range apart:
- Double and triple glazing options – choose based on your home’s needs and the SEAI specification
- Thermally efficient glazing – reduces heat loss significantly compared to older single or standard double-glazed units
- Thermoglaze 70 sculptured frame and 63 chamfered frame – both available in inward and outward opening configurations
- Aluminium or PVC thresholds – giving you flexibility to suit your floor level and draught-proofing needs
- Internal beading – improves both security and thermal integrity
- Multi-point hook-and-shoot bolt locking systems with anti-snap cylinders – built to high security standards as standard
- 90-degree stop opening position – practical for access to patios, gardens, or balconies
- Georgian bar style effect available – a popular choice for period homes across Dublin
If you’re in Rathgar, Drumcondra, or other older Dublin suburbs where period properties are common, our doors range includes options that suit both the aesthetic and the grant requirements.
Ready to see the range in person? Visit one of our showrooms and we’ll walk you through what qualifies.
Does Your Home Qualify? Key Eligibility Checklist
Before you go ahead, run through this list:
- Your home was built and occupied before 2011
- You are the property owner
- Your property has a valid MPRN
- You currently have inefficient external doors (single or underperforming double glazing)
- The replacement doors meet U-value ≤ 1.4 W/m²K
- You have an up-to-date BER certificate (or are willing to get one)
- Post-installation BER assessment confirms the property meets the Heat Loss Indicator (HLI) of ≤ 2.3 W/m²K
The HLI requirement is one that catches people out. Your home may need attic insulation or wall insulation alongside the door replacement to hit this figure. We can talk you through this when you get in touch.
What If You Don’t Qualify for the SEAI Grant?
If your home doesn’t meet the grant conditions – for instance, if your BER or HLI falls short – you can still upgrade through our 35% discount offer on energy-efficient windows and doors. This is our own alternative for homeowners who want to improve their home’s performance but aren’t eligible under the SEAI scheme.
You still get the same high-quality product. You just won’t be going through the SEAI application process.
How to Apply for the SEAI Grant Through Thermoglaze?
The process is straightforward:
- Get in touch – call 01 912 0600 or use our online quote form
- We assess your home – we’ll confirm your product requirements and eligibility
- Order and pay deposit – homes that ordered from 27th January 2026 onwards can qualify once all conditions are met
- Installation – carried out by our SEAI-registered team
- Apply for the grant – you have up to eight months post-installation to submit your application once the SEAI portal opens
Thermoglaze handles the product side, and we’ll make sure your installation is fully compliant. We don’t just fit uPVC doors or standard options – we help you get the right product for the grant and your home.
Visit Our Showrooms in Dublin
The best way to see the French door range and discuss your options is to come in. We have two showrooms in Dublin:
Northside – Swords Showroom
Unit F2, Swords Enterprise Park, Feltrim Road, Drinan, Swords, Co. Dublin, K67 WF72
Southside – Rathgar Showroom
68 Rathgar Avenue, Dublin 6, D06 KN53
Both locations are open to walk-ins and appointments. Call us on 01 912 0600 or visit thermoglaze.ie to find out more.
Conclusion
French doors can absolutely qualify for the SEAI 2026 grant – up to €800 per door, for a maximum of two. The key is making sure your doors meet the U-value requirement of ≤ 1.4 W/m²K and that your home overall achieves the required Heat Loss Indicator after works are completed.
Thermoglaze French doors are built with energy performance in mind, available with double or triple glazing and designed to meet SEAI standards. As a registered SEAI installer, we can carry out the work, handle compliance, and help you through the grant process.
Don’t leave money on the table – call us today on 01 912 0600 or get a free quote online and find out exactly what you’re entitled to.
FAQs
1. Can you get an SEAI grant for French doors in Ireland?
Yes. French doors qualify as external doors under the SEAI 2026 scheme. You can claim up to €800 per door for a maximum of two doors, provided they meet a U-value of ≤ 1.4 W/m²K and are fitted by an SEAI-registered installer like Thermoglaze.
2. How much is the SEAI grant for external doors in Ireland in 2026?
€800 per external door, up to two doors per property. That’s a maximum of €1,600 on doors alone. Combined with the windows grant, a detached homeowner can receive up to €5,600 in total.
3. What U-value do French doors need to qualify for the SEAI grant?
They must achieve a U-value of ≤ 1.4 W/m²K. Thermoglaze French doors – available in 28mm double glazing and 36mm triple glazing – meet and exceed this requirement.
4. Does my whole house need to qualify, not just the doors?
Yes. Your home must achieve a Heat Loss Indicator (HLI) of ≤ 2.3 W/m²K after works are completed. Some properties may need attic or wall insulation alongside door replacement to reach this level.
5. Can I claim the SEAI grant for French doors without replacing my windows?
Yes. Doors and windows can be claimed independently. You do not need to replace your windows to qualify for the door grant, as long as your home meets the overall HLI requirement after installation.
6. When can I apply for the SEAI 2026 doors grant?
You can order now. Homes where work was ordered or commenced from 27th January 2026 qualify. Once installation is complete and paid, you have up to eight months to apply through the SEAI portal.
7. Is Thermoglaze an SEAI-registered installer for French doors in Dublin?
Yes. Thermoglaze is a fully registered SEAI contractor supplying and installing energy-efficient doors across Dublin. Call 01 912 0600 to confirm your eligibility.
8. What if my home doesn’t qualify for the SEAI grant?
You can still upgrade through Thermoglaze’s 35% discount offer on energy-efficient windows and doors – the same high-performance products at a reduced cost, no grant process required. Visit thermoglaze.ie for details.
9. Do I need a BER certificate to claim the SEAI door grant?
Yes. An up-to-date BER certificate is required before work begins, and a post-installation BER assessment is needed to confirm your home meets the HLI of ≤ 2.3 W/m²K.
10. Where can I see Thermoglaze French doors in Dublin?
Visit either of our two showrooms:
- Swords: Unit F2, Swords Enterprise Park, Feltrim Road, Swords, Co. Dublin, K67 WF72
- Rathgar: 68 Rathgar Avenue, Dublin 6, D06 KN53
Call 01 912 0600 or get a free quote online.