A thin-joint mortar has been launched by Wienerberger to combat the winter cold snap. The ZeroPlus mortar is specially formulated for the Porotherm construction system, enabling it to be laid at zero degrees celsius and above.<br> <br> The Porotherm system can enable construction speeds up to five times faster than traditional masonry methods thanks to precision engineered blocks, thin, quick drying mortar and associated components, Porotherm says.<br> <br> Developed in response to customer requests following last year's bad weather, ZeroPlus provides the same performance at between zero and 3°C as existing thinjoint and traditional mortar, which can only be used at temperatures of 3°C and rising.<br> <br> The product should reduce downtime and extend build programmes longer through the winter months than ever before, Porotherm claims.<br> <br>