Dunlop Ardit Rapidset Repair Mortar is an extremely, rapid hardening construction mortar which is trafficable after just 45 minutes and ready for floor coverings after 1 hour. Ideal for filling cracks and holes over a variety of surfaces, it is also suitable for use internally around doors, windows and plumbing installations up to a thickness of 20mm. Ideal for ramping from a feather edge to normal screed thicknesses.