This is a pre-accelerated isophthalic polyester bonding paste which is reinforced with glass fibres. This product exhibits exceptional mechanical and handling properties, water resistance, has low shrinkage, better resistance to impact and gives structures high shear-strength. Bonding paste 91-20PA has been specifically designed for the assembly and bonding of GRP moulding such as panels, inserts, internal frames, ribs, internal core materials, hull to deck assemblies, composite constructions and car body components. No resin additions are required.