Examples of the way in which textiles fade after 160 days
exposure to the sun.
|Light fastness levels
according to DIN EN ISO 105-B02
|Resistance to Fading||First noticeable fading after||Discoloration
after 160 days of direct sunlight
|The GLATZ material classes||The GLATZ product range|
|Level 1||very poor||5 days|
|Level 2||poor||10 days|
|Level 3||fair||20 days|
|Level 4||fairly good||40 days|
|Level 5||good||80 days||2||easy Collection|
|Level 6||very good||160 days||2||easy Collection|
|Level 7||excellent||350 days||4 and 5||Individual|
|Level 8||unbeatable||700 days||5||Individual, Professional|
Why should lightfastness be a factor in choosing a sunshade?
UV rays can not only cause skin redness but also change the colour of materials. As a result, coloured fabrics fade and white as well as lighter colour shades turn yellow if they are permanently exposed to solar radiation. If you want your sunshade cover to retain its original colour for a very long time, it is advisable to choose a GLATZ sunshade with a lightfastness level of at least 7.
How is quality affected by the colour, dyeing process and material properties?
Depending on the intensity and duration of UV radiation, dark materials generally fade faster than light fabrics, while bright and white textiles tend to turn yellow. Textiles woven from pre-dyed yarn fade more slowly than those dyed in one piece after weaving. In terms of lightfastness, fabrics made from polyester and acrylic offer superior quality and differ only in colouring and density.