A suction control primer to give a lower suction base on very dry backgrounds. Applied by roller or brush onto the background, this can then be plastered when it has soaked into background and has dried. Yellow in colour to aid identification of treated areas. Typical coverage needed for 100m² is approx. 11 litres undiluted. 11 litres can also be diluted to give 300m² of coverage at a ratio of 1:2 and 600m² at a ratio of 1:5 with fresh water.