Greenhouses have a sensitive factor to keep on level is the temperature. In wintertime, it can be solved by using a heater. How about in summer when the sun rapidly increases the temperature and even opening up the greenhouse, the temperature would be still too high? In addition, we have to take into account the UV radiation which can harm the vegetation inside the greenhouse.
Shading is the key to blocking sun heat and UV. Shade paint can be applied in spring and removed in autumn. These shading paints are designed for greenhouses and they can be removed easily with the right liquid. The application can be done by a person using a spray gun, deploying a spray machine to the roof and by aerial application. Walking in the gutter with the spray hose is not the safest way. Even many companies do not allow workers to use this method anymore because the risk factor is enormous. There are falls recorded every year.
Spray machines are costly compared to using them only twice a year and usually, they are custom built which makes the price higher.
Aerial application using an aeroplane or helicopter can be costly and they need a very skilled pilot to apply the paint properly.
Look like the DRONE application is the safest, quickest and most cost-effective application. Drone application is a new method to apply shade paint or the removal coat but it needs knowledge and experience to do the application properly. Flight can be fully autonomous and the liquid amount can be set up.
