Greenisolatie is the go-to expert specialist in HR++ Glass!
- Save on your energy bill
- Improved comfort in your home
- Better for your home, and better for the world!
Less cold coming through your windows? Replace single and double glazing with HR++ or triple glazing. You keep the heat inside, and it becomes quieter in your home. Plus, it’s good for your energy bill and the climate.
Yes, I want to improve my home’s insulation and get advice about available subsidies​
- 25,000+ houses insulated
- Subsidy arranged from A to Z
- 10 years insulation experience

- 25,000+ houses insulated

- Rated 5 stars

- Done in 1 day!
10 years insulation experience
- 25,000+ Houses insulated
Rated with 5 stars
Done in 1 day
10 years insulation experience
- 25,000+ Houses insulated
Rated with 5 stars
Done in 1 day
What is HR++ Glass?
HR++ glazing is insulating double glazing consisting of two panes of glass separated at the edges by a spacer, such as a metal frame.
Additionally, a heat-reflective coating is applied on the cavity side of the glass, and the space between the panes is filled with a noble gas.
This combination ensures that HR++ glass has significantly higher optimal thermal efficiency compared to standard single or double glazing.
- Lower heating costs
- More comfortable living environment at home
- Less street noise comes through
Advantages of HR++ Glass

Save up to €570 per year:
Thanks to efficient HR++ glass, heat stays inside, resulting in significant savings on your energy bill. Based on average annual heating costs of €1900 (source: Nibud), a 30% savings amounts to around €550 per year.

Improved living comfort:
HR++ glass ensures a consistent and comfortable indoor temperature, without annoying cold spots or drafts.

Sustainable and environmentally friendly
Reduce your CO2 emissions and contribute to a better environment by optimizing your energy consumption. The less energy you need, the less you emit.

Increased property value
HR++ glass is an investment in your home that increases its market value and makes your property more attractive to future buyers.

Non-binding advice
At Greenisolatie, we are always ready to personally advise you on the best option(s).

Subsidy!
Investment Subsidy for Sustainable Energy (ISDE)? Take advantage of the government subsidy now. In 2025, you can receive a subsidy back on your insulation costs through this scheme. Additionally, our team will check if your municipality has any other subsidies available for you.
Step-by-step upgrade to HR++ Glass
01
- Measurement appointment
After submitting the form, Greenisolatie will contact you within 24 hours to schedule a non-binding measurement appointment with one of our experts.
02
- On-site expert assessment
The Greenisolatie expert thoroughly assesses and measures the windows of your home and discusses the possibilities and benefits of HR++ Glass with you.
03
- Implement HR++ Glass upgrade
After the assessment, our professional team carries out the work. The HR++ glass is installed in the frames, the old glass is removed, and the workspace is left clean. We ensure a high-quality and sustainable installation.