EVERBUILD® OPTI-MIX® 3-IN-1 RENDER ADDITIVE is a highly concentrated render additive which is 25 times the strength of conventional render additives. EVERBUILD® OPTI-MIX® 3-IN-1 RENDER ADDITIVE triple action formula acts as a waterproofer, air entraining plasticiser and open time extender which eliminates the need for separate waterproofing/plasticizing admixtures. EVERBUILD® OPTI-MIX® 3-IN-1 RENDER ADDITIVE forms extremely stable air bubbles in render mixes. This improves the workability of  render giving it a “buttery” consistency and helps prevent shrinkage, cracking, crazing and mild frost damage during the curing process, as well as providing long term resistance to freeze/thaw cycles. It also contains pore blocking additives to reduce water absorption and reduces the chance of efflorescence (salt formation). EVERBUILD® OPTI-MIX® 3-IN-1 RENDER ADDITIVE extends open time to enable large areas to be covered in one go.