4EVERblue is the most translucent solar control with a total solar energy rejection of 57%. 4EVERblue can be applied on all kinds of skylights, skydomes or conservatory roofs. 5 liter 4EVERblue is good for 45 m². This package is inclusive of a 1 litre s00p Surface Cleaner. 4EVERblue can be applied on all kinds of skylights, skydomes or conservatory roofs. 4EVERblue is the most translucent solar control with a total solar energy rejection of 57%. The coating is waterborne.