They are made of yarn or roving by means of leno or plain weave The diameter of elementary glass fibres varies between9 and 1 7micrOn.Mesh fabrics combined with specially designed mesh surface treatments can be used in a wide range of applications.but are mainly used in construction industry.Surface treatments based on styrene.butadiene ensure aIkali resistance and increase the mechanical durability that is required by the construction industry.In addition.other surface treatments based on PVAc.PVC or styrene-acrylate are used for different.