Floor joints are a vital consideration on any concrete slab. But aside from their massive benefits, their installation requires coordination between the contractor and customer. And the material needs to be determined based on the environment of the area.
Firstly, why would anyone install joints into a nice new concrete slab? Well, there are many reasons. And the biggest is to allow the concrete some room to flex. And it doesn’t seem like a large, rigid concrete slab should flex. But when it’s sitting on top of a settling ground, enough tension could easily build up, so that the slab actually cracks under its own weight. And a cracked foundation has the potential to cause a lot of harm to a building in the future.
So the ideal scenario is to install joints immediately after the slab is poured. And after 28 days of curing, the concrete will be ready to cut. But there are different types of joints that a floor installer can cut. But the most common is a control or expansion joint.