How To: Concrete Control Joint Preparation, Filling & Finishing

Control joints are placed in concrete slabs to relieve tension as the slab cures. Installing or cutting a joint of this type, therefore, directs cracking in a controlled manner. Once the slab has cured, the joints have served their purpose. While there may be future movement, it should be gradual and within a fixed range as the seasons change. It’s a judgement call to fill or leave them open. The video documents a joint fill process that’s dedicated to the proper preparation and filling of control joints. It’s a preparation method that may or may not be relevant to all joint fillers, but the full process here is specific to this particular product type. 🇺🇸💪🏼🇺🇸💪🏼🇺🇸 #SURFACEPREPARATION #JOINTFILLING