Offering very low capillarity, good vapour permeability with an exceptionally rapid initial rate of setting, Masons Mortar Ltd DPM mortars are specifically designed for high foot  traffic areas where joints are large and the mortar is acting as a unifying surface finish between often irregular masonry units or where unpredictable intermittent inundation or tidal submersion is certain. The mortar is applied as a dry brushed joint filler and hydrated after placing.