Woven roving is used to increase the strength and stiffness of laminates. It is usually sandwiched between layers of Fibreglass mat and should not be used as the external layer of any laminate. The resin consumption is approx. 1:1, so 1m2 of 300gm woven roving will use 0.3kg of resin to fully wet it out. The ability to drape the material decreases as the weight/m2 increases.