Dutch grants
New frames with insulating glazing may qualify for the Dutch ISDE scheme under certain conditions. We help make your project information complete.
We go through which requirements apply to your situation. RVO remains the deciding authority.
If something is missing from your file, we tell you what is needed and where to request it.
You receive the insulation values and product data that an application calls for.
Amounts and conditions change, so we always point to the current RVO page rather than make a promise.
ISDE scheme
Owner-occupiers in the Netherlands may receive support through the ISDE scheme for HR++ or triple (HR+++) glazing. In 2026, the base amount for triple glazing in new frames is €111 per m². If you complete two qualifying insulation measures within 24 months, the insulation amount may double.
The key conditions at a glance:
Soleca
We check project details, collect relevant product information and help prevent required documents from being missed. During an advice appointment we can quickly estimate whether your home is likely to qualify.
Soleca
Rules, amounts and combinations can change every year; the ISDE conditions were amended on several points as of 1 January 2026. You should always verify the current scheme with RVO, the official Netherlands Enterprise Agency.
ISDE
A grant is often available only when the installation and selected materials meet specific conditions. For window frames, this commonly concerns the combination of insulating glazing, insulating frame components and the correct product specifications.
Because rules and conditions can change, we consider what may apply to each situation. We help with an initial assessment and advise on a suitable specification.
For renovation projects involving frames and insulating glazing, the materials and installation may need to match the current grant conditions. We therefore consider not only appearance and comfort, but also the technical properties of the selected solution.
We flag points that may matter for an application and help you choose a suitable specification. For definitive conditions and assessment, we always refer you to RVO.
Soleca helps you consider specifications that may be relevant to a grant, looking at comfort, insulation, appearance and product information.
We do not issue a formal grant decision. We can, however, provide an initial assessment, explain the selected products and supply documents you may need.
Productspecificaties
The glazing description appears in the aluminium spacer between the panes. You will often need the following registration codes for the glazing used when applying.
| Registration code | Type | Description | Insulation value |
|---|---|---|---|
| KA20730 | – | Float – TH1.1 – Argon [4/16/4] | 1.1 |
| KA20731 | – | Float – TH1.1 – Argon [6/16/6] | 1.1 |
| KA20732 | Laminated inside | Float – TH1.1 KL.2(B)2 – Argon [4/14/33.1] | 1.1 |
| KA20734 | Laminated both sides | TH1.1 KL.2(B) – Argon [33.1/16/33.1] | 1.1 |
| Registration code | Type | Description | Insulation value |
|---|---|---|---|
| KA20735 | – | Float – TH1.1 – Argon [4/16/4/16/4] | 0.6 |
| KA20736 | Laminated inside | Float – KL.2(B)2 TH1.1 – Argon [4/16/4/14/33.1] | 0.6 |
| KA20737 | Laminated both sides | Float – KL.2(B)2 TH1.1 – Argon [33.1/14/4/14/33.1] | 0.6 |
4.5 out of 5 from 100+ Google reviews
Source: Google Reviews · some reviews translated
We had window frames installed by Soleca. We had pleasant contact with Mathis and then had the pleasure of welcoming Willem and Willem to our home for the installation. I would definitely recommend the guys!
Milan Breedveld
After searching for weeks for a company willing to install our window frames at a reasonable price, we finally ended up at Soleca. It was well worth the wait! I was skeptical due to previous experiences with contractors, but that proved unfounded. The window frames were installed very neatly and quickly. I recommend this company to everyone!
Roan Dronrijp
We had window frames and sliding doors installed for our new home in Hellevoetsluis and are extremely satisfied! Everything fits perfectly and is beautifully finished inside. Ultimately, we're very happy we chose Camille and Soleca!
Tony Kopp
Good experiences with the installation of triple glazing and new frames, and smooth communication.
Jan de Wit
From a quick appointment with good and clear advice to the installation of the window frames. Everything went flawlessly and what craftsmanship! Top service!
Mohammed el Fizazi
We had all the window frames and the front door in our home replaced with uPVC. Everything is beautifully finished, and the installers even hung the curtain rails for us. Very happy, definitely recommended!
Beyza Ustübi
They come by to inspect everything thoroughly, ensuring the quote is accurate from the start and preventing any problems later. Delivery and installation went smoothly and as agreed. The installers were knowledgeable and friendly. All for a reasonable price. Highly recommended.
Marian van der Helm
Good, fast, and neat service. And a super competitive price!
Ger
I received good help from Soleca; there were a few points for improvement, but they resolved these issues skillfully and quickly. All in all, very satisfied.
Dante Munoz
Potentially. In 2026, triple glazing qualifies for the higher amount only when the frames are replaced too, and all glazing measures together must cover at least 3 m². RVO checks every condition and decides the application.
No. Eligibility depends on factors such as the type of glazing, the glazed area, the insulation value and whether you combine one or more measures. RVO makes the final decision.
Yes. We give a first estimate of your options, advise on glazing and frames that meet the requirements, and supply the product information and registration codes you need. The application itself runs through RVO, the Netherlands Enterprise Agency.
You usually need the invoice for the completed work, product information for the glazing, the registration codes of the products used, and photos or other proof of installation. We supply the required product information.
Well-insulated frames with HR++ or triple glazing can significantly reduce heat loss through windows. This may mean lower energy bills, greater comfort and less cold and draught around windows. The exact saving depends on your property, glazed area and current insulation.
The price depends on factors including the frame material, glazing type, number of windows and dimensions. We therefore prepare a tailored quotation so you know exactly what to expect.
Yes. The government can amend the conditions annually; the ISDE conditions changed on several points as of 1 January 2026. Always check the current scheme with RVO.
Ready for the next step?
A no-obligation quote, personal advice and installation by our own specialists.
