NUESTRO BLOG

First of all we are going to make a definition of what is a sun shade screen.

It is a geotextile consisting on raffia strip of high density polyethylene (HDPE) and PE monofilament woven by the Raschel method.

It must be UV stabilized and should be 100% rot-proofs.
 
We have to take into account several factors before choosing the suitable sun shade screen such as position, wind direction and the type of crop we have. Nevertheless, we basically have to consider these two things:
 

*Colour

*Grade of shade

 
Colour
They are in the market at the moment a wide range of sun colour shades: red, blue, black, green, white, etc.
We are going to focus on the most significant.

–Black: It is the colour that offers more shade and the most natural too, provides a decrement in luminosity and in temperature.

–White: This colour reduces the heat without removing luminosity; it is indicated for plants which required a large amount of light or high density crops.

–Green: It provides a slightly higher shadow than the white and lower than the black. It is recommended when you do not need a deep visual impact.

–Aluminium: That is interesting when you need thermal shield, that is to say to reduce insolation and nocturnal heat loss.

– Other colours: They are not representative in the market.

 

 

Grade of shade

It is understood by grade of shade the insolation reduction when solar rays have a vertically impact on the surface.

So an 80% sun shade screen means that when the sun falls vertically, the sun shade screen would allow passing the 20% of light and heat energy.

When you think about what grade of shade to choose, apart from direction, we should also consider ventilation. A closed sun shade will not allow the correct ventilation; consequently it would be a rise in temperature.