Crete-joint is a 2 - piece control joint former , it is inserted into the concrete when it is still wet , preferably after screeding , a straight vertical line of weakness is formed , the top piece of the strip is removed leaving the vertical part in the concrete to form a weakness in the surface of the slab to the ground.
Crete-joint comes in 3.05 meter lengths and is available in 3 sizes, 25mm , 38mm & 50mm
A straight vertical line of weakness is formed where the Crete-joint gets inserted. The top strip is removed leaving the vertical portion in the concrete to form a weakness in the surface of the slab to the ground. The new joint can be tooled with a radiused edger or the surface of the slab can be finished over the top of the joint.
As the slab shrinks during the normal curing process a slight straight line separation on the surface of the slab will appear where Crete-joint was inserted