Lumiforte | Blog

Shading with ReduSol: A Reliable Greenhouse Cooling Solution

Written by Lumiforte | October 2026

Liquid greenhouse coatings are replacing chalk applications more than ever. These coatings are easy to apply, easy to remove and provide uniform shading. Shading with ReduSol is a good choice if you have little or no experience with liquid coatings.

The best way to keep heat out of the greenhouse is to repel external heat radiation. Growers have traditionally done this by spraying their greenhouses with chalk or by using an external shade cloth. A more modern option is to apply wear-resistant ReduSol on the outside of the greenhouse. ReduSol reduces heat radiation and is a more practical alternative to chalk or the installation of shade cloths.

Easy to use

ReduSol has been on the market for over 25 years, and many ornamental plant growers have had very positive experiences with it. The product is easy to use. It is already liquid, so it mixes easily with water and does not clog the spray equipment. ReduSol is also easier to remove from the greenhouse than chalk.

ReduSystems has further developed the technology of liquid coatings together with growers and through research. Today, a series of coatings with advanced properties is available, such as coatings for light diffusion or for reflecting certain wavelengths of the light spectrum.

An average of 5 degrees less

Applying a liquid coating to the greenhouse roof changes the light conditions in the greenhouse. This has an impact on the growth and development of the plants. If you have no experience with ReduSystems products, applying ReduSol to the greenhouse roof is a good way to experience the effect of a liquid coating.

ReduSol provides full protection and is resistant to rain. A layer of ReduSol on the greenhouse roof reduces the average greenhouse temperature by as much as 5 °C. This benefits both the plants and the people who work in the greenhouse.

For glass and plastic greenhouses

You can apply ReduSol on glass and on all plastic materials. On a plastic greenhouse, the coating extends the lifetime of the film because it blocks part of the harmful UV rays. On a sidewall, ReduSol is a good way to reduce the radiation on that side.

The coating is easy to apply and to remove, either by hand or by machine, if available through a contractor. To remove ReduSol, ReduSystems has developed ReduClean. This mild cleaning product is safe to use on glass or plastic film and, after application, lets the rain wash off the coating.

Custom ReduSol

You can apply liquid coatings such as ReduSol in multiple layers. This makes it possible to increase the shading as the light intensity increases. You can also reapply ReduSol in places. The two layers mix together well and result in a lasting, uniform layer on the greenhouse roof.

ReduSol can be mixed in multiple colours. Garden centres can, for example, mix a black colour through the liquid coating to apply a dark coating on the greenhouse in December and create a Christmas atmosphere. Another application is mixing in a green pigment, so that the greenhouses blend into the landscape. This is done in Germany and other countries. The added colours have no effect on the removal of ReduSol.