Choosing for a Nobutec glass greenhouse is choosing for quality and for light. The rule of thumb in vegetable production states that 1 % more light is equivalent to 1 % more production. The covering of your greenhouse plays a substantial role in achieving the optimal light yield. The light transmission, UV transmission and the insulation value are also important factors that impact the level of investment for a new greenhouse project.
There are several possibilities regarding the choice of greenhouse glass. Float glass is the typical glass used in Dutch greenhouses. Due to safety regulations, however, safety or tempered glass is becoming a more popular choice. The latest developments in greenhouse glass is the choice for diffuse glass and AR coatings.
Applying float glass is the most economical way to cover greenhouses with glass. This is the normal greenhouse glass that has covered all Dutch greenhouses in the 20th century. As the safety awareness has grown, the application of float glass has decreased. Today, new greenhouses are often fitted with safety glass.
Safety glass is the tempered version of standard float glass. Just like float glass, the light transmission is around 90% and has a thickness of 4.0 mm. This tempered glass is approximately 6 times stronger than standard float glass and shatters into small pieces when broken.
Diffuse glass is the latest trend in greenhouse glass. It scatters direct sunlight, allowing light particles to penetrate deeper into the crop. This can be extremely beneficial for crop growth, increasing yield and improving the quality of the produce.
The possibilities with this type of glass are nearly endless. Diffuse glass transmits less light than traditional glass, this however can be compensated with AR coatings. By finding the balancing the light transmission and the level of scatter it is possible to fine-tune the greenhouse covering.