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Greenhouse shading paint

A suitable solution for every crop to make optimum use of the sun

The climate within the greenhouse is of great importance. Not all crops can withstand high temperatures and full sunlight. Shading agents and diffuse coatings form the solution for this problem. By reflecting or diffusing sunlight, you ensure that the crop is not damaged by excessive light intensity. There are different types of shading agents and diffuse coatings, each with it's own effect. Find the shading agent or diffuse coating that suits your crop.

Advantages at a glance

✔  Higher yield  
✔  Easy to remove
✔  Improved greenhouse climate
✔  Can be applied mechanically or manually

Wondering what greenhouse shading paint and diffuse coatings can do for your crop?

Ask more information  Download the whitepaper

Greenhouse shading paint

Greenhouse shading agents offer reflection

As a grower, you strive towards a stable climate in your greenhouse to create perfect circumstances for your cultivation. To accomplish a stable climate, the temperature peaks should be reduced. Greenhouse glass paint, also called whitewash, offers the solution for you. Shading agents reduce the temperature inside the greenhouse by partially reflecting sunlight. In this way, glass paint provides complete protection from the heat of the sun throughout the season and prevents light stress phenomena and damage to the crop from light burns. Curious to more information about shading agents? Download the whitepaper for more information. 

Shading agents

Greenhouse construction changed, and spraying techniques became more and more sophisticated. The demand for a different way of chalking has also increased. It has to be easier, faster, safer and more accurate. To meet your demand, two types of shading agents have emerged: liquid and powder shading agents. Both forms have their advantages and disadvantages. Besides the different forms of shading agents. There are different sorts of shading agents each with a different kind of effect. Liquid shading agents Q3 White and Q4 White are both chalk agents based on calcium carbonate. But what is the difference between Q3 and Q4 White?
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Two other products that provide stress reduction for your plants are Q-Heat and D-Gree. Q-Heat and D-Gree are similar screening agents, yet there is a difference. Q-Heat is a screen material that only reflects heat radiation for less heat in the greenhouse and therefore creates a cooler greenhouse climate. D-Gree gives diffuse light, whereby also the heat radiation (NIR) is reflected for a more pleasant greenhouse climate. For more information, read the article "What is the difference between Q-Heat and D-Gree?". Some crops require maximum protection against sunlight. With Q-Black, you can provide this maximum protection. Wondering if your crop needs Q-Black? Our specialists have also written an article about this: "What is Q-Black and what is it suitable for?".

Greenhouse diffuse coatings offer transmission

Besides the different types of shading agents, there is also another way to protect your crop from the sun, namely: diffuse coatings. Unlike shading agents, diffuse coatings are designed to let as much light through as possible. Instead of reflection, diffuse coatings offer transmission. This ensures a higher light reception in the greenhouse, which in turn leads to more and better growth of crop and fruit. In floriculture, diffuse light has proven to lead to higher growth and in vegetable cultivation it has proven to increase production while improving crop quality.

  • Diffuse coatings

    What's in it for you? Diffuse light penetrates more homogeneously and deeper into the crop. Diffuse glass on greenhouses is one way to improve the light use efficiency of greenhouse crops. In this way the diffuse light increases yield and offer ideal conditions for the cultivation of (among other things) tomatoes and peppers.

    If your preference is for diffuse coatings, there are many different types of coatings to choose from. Which one you should choose, depends on the needs of your crop. The difference between the coatings is in the light diffusion and light transmission. Read in the article "Which different diffuse coatings are available?" which diffuse coatings are available.

    At the end of the summer, when the temperature drops, it is important to remove the shading paint from the greenhouse roof. In this way, the crop can maximally benefit from the natural grow light. Removers are specially developed to remove Hermadix shading agents. Our specialist gives you some tips on how to remove shading paint from the greenhouse.

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There is also diffused glass. Diffused glass has become increasingly popular, especially in vegetable cultivation in recent years. The effect of both diffused glass and diffuse coating is exactly the same: they create diffuse light in the greenhouse with a low to high degree of diffusion. The differences between diffuse glass and a diffuse coating affect price, flexibility and durability. Want to know which option is right for your greenhouse? Then read the article about the differences between diffuse glass and diffuse coating.

Whitepaper shading agents and diffuse coatingsWhitepaper | Shading agents and diffuse coatings

Warm springs and summers cause peaks in the greenhouse climate. Possible consequences are: reduced photosynthesis, delay in plant growth, loss of quality and lower production. You can prevent this with the right shading agent or diffuse coating. In this whitepaper you will find all the information you need to determine which product is most suitable for your crop and how to apply it.

Download the whitepaper

Experiences from our customers

D-fuse in cucumbers"The light penetration was better and the crop was significantly less stressed. As a result, it remains active longer and you get more production. We are very satisfied with this diffuse coating."

Jan Reijm | D-Fuse in cucumber

Q4-white in kalanchoe"It's important that we can do the whole season with one layer of shade paint. Removing it at the end of the season shouldn't cause any problems either. Q4 White meets those conditions very well."

Pietro van Genderen | Q4 White in kalanchoe cultivation

More and more greenhouses coated worldwide

Hermadix is based in the Netherlands. "The Netherlands is a unique country in terms of subcontracting," sales manager Jeffrey Pouw says. "This is unknown in other countries. For us, the knowledge and expertise of the contractors are crucial factors to succeed in the Netherlands. They work with professional equipment and know what they are doing." Pouw estimates that about 20 to 25% of the greenhouses are chalked mechanically. "The chalk and coatings are applied perfectly. You really don’t see that in other countries."

Still, it is not the Dutch market where Hermadix sees major sales growth. "We’ve made a growth spurt particularly thanks to our distributor Royal Brinkman," says Pouw. "And that's mainly international. The Dutch market is still slightly growing, but by far doesn’t show the growth that we see in other countries. The market here is already quite saturated and there is some competition. The situation in horticulture is also not ideal. The industry is under pressure. In combination with the climatic conditions, growers then sometimes choose to skip the coating."

Shading agents and diffuse coatingsInternationally, this is completely different. "In Australia, it is not an option for growers not to chalk or coat. The light intensity there is much higher." And Pouw also sees sales increase in countries like Japan and China. "Because we reach new customers through Royal Brinkman, but also because existing clients are expanding. We are a relatively new player and coatings are still pretty unknown. Vegetable growers traditionally aren’t used to chalking, in fact they want to keep the greenhouse as clear as possible. The coatings bring more light into your greenhouse, but in a different way. This requires adjustments to your cultivation. As a grower, you should be able to confidently work with this. A grower has 2 hectares coated in the first year, 4 hectares the next, and the whole greenhouse in the third year."

Also thanks to these developments, the company’s sales of chalk products - both coatings and chalkings - has more than doubled in the past two years. And given these market conditions, Pouw does not expect that growth to stop in the coming years. "We have been at it for ten years now and still have a lot of growth potential. If international growers favor us as much as the Dutch contractors and begin to approach chalking and coating just as professionally, the coming
years look promising."

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