• Temporary coatings

      Shading coatings that wear off gradually over time and do not need to be cleaned off at the end of the season. This range is designed to offer growers an effective, user-friendly solution.

      Temporary protection from light and heat for different periods of time without having to clean the paint off at the end of the season.

    • Removable coatings

      Often called On/Off, these coatings produce results that are stable over time until removed using the appropriate cleaning product.

      Removable protection against heat and light

      Removable protection from heat while maintaining grow-light

      Cleaning agent for removing shading agents


      Not entirely sure which solution fits your needs best? We’ve collected some resources to help you out.

      Online Product Advice

      Get instant product advice in 5 easy steps.

      Understanding light

      How do our coatings influence the sunlight?

      Frequently Asked Questions

      Quick answers to frequently asked questions.

      How to apply Sudlac coatings

      Instructions for application of our coatings on your greenhouse

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What does light do to your crop?

All radiation from the sun, whether it is PAR light, UV or infrared, has an effect on the growth and production of crops. You can selectively manage it with coatings that increase the positive effects and inhibit the negative ones.

Less than 15% of the sun’s radiation is visible to us. Coincidentally, this largely corresponds with the region of the spectrum that plants use for photosynthesis. For a long time, we focused exclusively on managing the visible part of light. However, over the past ten years, our understanding of the whole spectrum has increased considerably. Consequently, we can now produce coatings that manage a much larger area of the spectrum, yielding better results in terms of production and quality.

PAR Light

Visible light (wavelength 400 – 700 nm) virtually corresponds with the region of the spectrum that plants use for photosynthesis. This is why it is called photosynthetically active radiation. In short: PAR. Not all colours result in equal levels of photosynthesis. Red is the most efficient colour, with efficiency decreasing as we move towards green, and peaking again with blue. This applies to individual leaves. Contrary to popular belief, at crop level, green light is actually just as efficient as blue. The colour of the light also controls the shape and development of the crop. This often concerns the ratio between the colours. If there is more red compared to far red, the crop will grow more compact. This is also the case if there is more blue light compared to green.

UV radiation

In high doses, UV radiation (wavelength 280 – 400 nm) can suppress photosynthesis and cause visible damage to the crop. This is a very real danger in plastic greenhouses. UV-B (280-320 nm) is particularly responsible for this. However, UV can also have positive effects. It improves the colouring of ornamental crops. And, very importantly, it improves their resistance to diseases.

Infrared and NIR

All radiation above a wavelength of 700 nm is called infrared. The first part is the short wavelength radiation, also known as heat radiation or near infrared (NIR, up to 2500 nm). The transition between light and infrared is formed by far red, a colour that our eyes can just about see. Far red is very important to plants, due to among other reasons its effect in plant stretching. Although the plant does not use infrared for photosynthesis, it provides warmth to the plant. This can be highly desirable, but too much is never good. If the temperature of the plant increases too much, everything will go wrong: first it will stop photosynthesis, then irreparable damage will occur.

Graph effects grow light

Managing with light

Nowadays we can selectively control all parts of the solar spectrum. Optifuse allows a better spread and penetration into the crop and therefore a better use of light. Eclipse reduces the level of radiation across the board. This may be necessary where there is high radiation, although it is often better to reflect heat radiation with Transpar, which allows you to retain the useful PAR light while preventing excess heating.

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