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Tips for removing greenhouse shading agents from the greenhouse

removing shading agents
Written by Lars Ammerlaan | Last update 03-03-2020

After spring and the warm summer months with risk on high temperatures and a lot of light, in fall the greenhouse should be clean again in order to let the crop maximally benefit from the natural light. That's why it is important to clean the roof of your greenhouse by removing the greenhouse shading paint (whitewash). But how to remove whitewash from greenhouses? 

Clean the roof of your greenhouse

After experiencing all benefits offered by a greenhouse shading paint or coating, the greenhouse should be cleaned for autumn and winter. Removers were developed to remove greenhouse shading paint from greenhouses. These give you the possibility to easily and quickly remove the shading paint from the greenhouse. 

Tips to remove greenhouse shading paint

We provide several tips below to make the removing of shading paint from the greenhouse as easy as possible:
  • Carefully spray the roof with remover by following the recommended dosage on the package, so that the greenhouse shading agent ''breaks''. In this way, it is removed from the greenhouse easier.

  • Always use the solution prepared within 6 hours for optimal functioning. After 6 hours the solution should not be used anymore, since the functioning will have reduced. This will make it more difficult to remove the shading agent and the risk for attempt might be necessary.

  • Gradually apply the solution to the roof of the greenhouse. It is an option to make use of a greenhouse roof cleaner. It's also possible to manually apply the product to the roof of the greenhouse. However, this way of working is less precise, takes more time and brings along more risks. 

  • Make sure to discharge in a ditch. The shading agents Q3 White and Q4 White do not contain any components harmful to the environment. If you make use of a different product, make sure to check if it is allowed to discharge in a ditch. 

  • It's easy to remove a greenhouse shading agent, however a good planning is needed. A rain shower will cause the shading layer or coating to flush off the roof of the greenhouse, completely cleaning the roof. It is recommended to apply your remover just before a good rain shower. If rain isn't expected but you have applied remover to the roof of your greenhouse, it might be necessary to apply the remover for a second time. 

  • In order to prevent a change in the pH level of the water in your silo, close the water catch basin while using a remover.

Shading agent removers

  • Watch this video about Removit 

    Removit is the universal remover for all ‘Q’ (Q4 white, Q3 White, Q2 White, Q-Black, Q-Heat) and ‘D’ products (D-FUSE, D-FUSE Extra and D-GREE). After applying Removit, you may choose to let it rain off or to spray it off manually. 

Questions about how to remove shading paint from the greenhouse?

Would you like to know more about Removit? Contact one of our product specialists or make use of the contact form below. On working days you will receive a reply within 24 hours.

Contact form

Specialist Lars AmmerlaanAbout Lars Ammerlaan

Lars Ammerlaan, product specialist in shading agents and diffuse coatings, has been working at Royal Brinkman since 2017. After the position of assistant cultivation manager, and later on account manager, he made the switch to his current position. Lars has gained a lot of knowledge through his practical experience, which enables him to offer customers targeted and personal advice. Lars enjoys visiting the growers’ greenhouses and thinking along with them about suitable solutions. 'The challenging part of this job is the international part. Abroad things can sometimes be very different compared to the Netherlands and that makes it an interesting job, in which I can continue to develop myself.

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