The only weather restriction with lifting concrete is extremely cold weather for exterior concrete. Once there is a deep frost in the ground it can literally freeze the concrete to the ground, making it nearly impossible to lift and can cause damage to the concrete slab if attempted. The only other weather related restriction with the services we offer is for caulking concrete cracks and joints, and applying penetrating surface sealers. The surface of the concrete must be dry for both of those preventative maintenance services to be performed.