To get the best use from the Clayblock® system, it’s important first to understand the tools and materials that define the process: Thin bed mortar is a mix of fine-ground sand, cement and other ingredients specific to Clayblock® use. Mixed locally to laying, it allows for thin joints which will achieve full strength after 24 hours Unlike traditional mortar, which is often limited to use only when the temperature exceeds 3°C, our mortar can be used from 0°C, allowing block layers to minimise weather related delays Each 15kg pack requires just 3.6 litres of water and will lay 1 No. pack of blocks when applied by roller A Roller to apply the thin bed mortar allows for the swift and simple creation of true 1mm bed joints.