(PLEASE NOTE: ALL PALLET DEALS ARE SUBJECT TO A 2-3 DAY DELIVERY, DUE TO WEIGHT). Fast Set Flexible 56 bags of 20kg. Covers 5m 2 when installing insulation boards. Covers 2.5m 2 per bag over underfloor heating. Pro Rapid RS is a rapid set, polymer modified, premium grade cementitious tile adhesive, ideal for natural stone, porcelain & ceramic tiles where exceptional bond & rapid set are essential. It is suitable for both wet & dry conditions & is formulated to adhere to most common substrates including screwed & fixed over-boarded wooden floors. Classified C2FT. Available in white & grey.