A greenhouse screen comprising strips of film material that are interconnected by a yarn system of transverse threads and longitudinal threads by means of knitting, warp-knitting or weaving process to form a continuous product is disclosed. At least some of the strips comprise a film material in the form of a single- or multilayer polyester film wherein the film contains at least 1.0 wt.-% SiO2 and a maximum of 2.5 wt.-% SiO2, and has a spreading factor of at least 2 and not more than 8. The greenhouse screen as disclosed herein has a reduced flammability and light scattering properties particularly suited for greenhouse applications.