Pasty, elastic and grey natural rubber sealant, reinforced with Dralon fibers. Seals and fills several millimeters wide cracks and holes. Extremely elastic, endures structures’ movement very well, even up to 1 cm without cracks. Can be used in all weather conditions, even in rain and snow. Easy to work and seals immediately. Suitable for most dry and wet surfaces but final hardening requires drying. Completely weatherproof. Doesn’t withstand solvents.