When repairing concrete, we use NexusPro, which is a silicone-based product that fills and seals cracks and joints after lifting concrete slabs with our PolyLevel. Unlike some other sealants, our NexusPro is resistant to UV rays, which means that it won't bubble, crack, or dry up. Along with that, the drying time is much less than any other caulking product, and it has been proven to elongate its life twice as long.