We have the knowledge, knowhow, expert staff and materials that will help you realise sustainable roofing, sidewall and indoor solutions (e.g. service areas).

About us


For over 15 years, we have developed, supplied and assembled innovative high-quality insulation systems for roofing and sidewall systems for buildings within the horticulture industry.

The materials and construction methods chosen for each project depend on the end user’s requirements, sustainability requirements, costs and aesthetic aspects. We’ll be happy to discuss all the pros and cons of each factor with you to help you achieve the best possible result. You can rely on us, from the early stages of the design to the practical completion of your project!

Far across the border or around the corner, a huge new construction project or just a small renovation, with our years of experience we dare to say that with vision, determination and an eye for detail we achieve a top-notch result in each project.
- Gert Hollaar - Managing Director WNL


WNL’s roofing systems are ubiquitous in the modernhorticulture industry. You can easily realize a commercial space by replacing the glass for a WNL roof system.The panels come in many different thicknesses, meaning we can provide a solution to every climatological challenge.


WNL’s efficient and sustainable sidewall systems help you give your business space a sleek and minimalist look. Thanks to the strongly insulating properties of the high-quality panels, your business space will be both comfortable and energy-efficient.


WNL's panel systems are suitable for both exterior and interior use. The high-quality finishes, as well as the many different types of panels you can choose from, will give your interiors the very look you’re after. These panels are the right choice for you if you want to conserve energy, have an efficient build and enjoy flexible applications.




Waterproof joints allow you to install roof panels without any need for sealant

Panels can be installed easily and very quickly, thus minimising assembly costs

Questions? We are happy to think along with you!


Reducing our footprint

WNL Horti Insulation recognizes the importance of sustainable materials and practices in the horticulture & construction sector. As a leading provider of innovative insulation solutions, we understand that the materials we use have a significant impact on the environment. That's why we focus on utilizing materials that can be fully recycled without loss of quality, contributing to a circular economy and reducing waste.

In our commitment to sustainability, we are constantly working to reduce our CO2 impact and that of the supply chain. We achieve this by improving energy efficiency and increasing the use of recycled materials in our products. Our dedication to sustainability is unwavering, and we are fully committed to reducing our environmental footprint.

We ensure that all materials used in our products come from reputable suppliers who share our dedication to sustainability and are actively working to reduce their CO2 emissions. We also prioritize suppliers who adhere to stringent standards for working conditions and environmental impact. At WNL Horti Insulation, we are not just innovating insulation solutions; we are building a sustainable future.

In 2023 BOAL Group has achieved an outstanding Morningstar Sustainalytics ESG Risk rating (Environment, Social & Governance) for the second consecutive year resulting in a worldwide top 50 ESG Rating. WNL Horti Insulation. Part of the BOAL Group, is committed to ambitious environmental, social, and governance (ESG) targets. Safety, sustainability, and governance are the cornerstones of our operations. We believe in transparency and accountability, and more information about our ESG objectives and performance is available in our Sustainability Report more information on the rating can be found here: .


WNL Horti Insulation is part of BOAL Group, which has earned a Top 50 ESG (Environmental, Social, and Governance) rating among all companies worldwide. This ESG independent ranking by Sustainalytics proves our commitment to sustainable practices and places us in the top 1% of companies rated by Sustainalytics globally.

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