Ronafix Pre-packed Render/ Screed is a two component pre-packed mortar supplied as a sack of powder and a bottle of polymer gauging liquid. Ronafix Pre-packed Render/ Screed will produce a weatherproof render; it is bonded to the substrate with Ronacrete Standard Primer. Ronafix Pre-packed Render/ Screed has very good resistance to water and water vapour, providing excellent resistance to frost, rain and entry of floodwater; resistance to water vapour of a 12mm layer is 60 MN·s·g–1 50 times greater than the same thickness of sand/ cement. Flexural, tensile and compressive strengths are considerably better than unmodified render. Typical shrinkage of Ronafix Pre-packed Render/ Screed is 0.01%, similar to that of epoxy resins. Durability of Ronafix Pre-packed Render/ Screed is considerably greater than sand/ cement render, heat ageing tests showed only a minor reduction in tensile strength after simulated life of 40 years, while flexural strength was increased.
