Retinoblastom - Forum

GUTIERREZ · Mitglied Beiträge: 145

Welcome to GJ, Todd and company. Good points have been made for you so far. I would fill the joints to keep moisture out of the slab. Left unsealed and painted as best that can be done, moisture will get under your new finish and make bubbles in the finish and eventual separation. Sealing first will provide a continuous finish coat over your whole floor as AlphaGarage mentioned and graphically demonstrated above. Whatever you do seal it with, you may want to test the finish on a small area to assure compatability. BTW, If you have a 580 sf concrete slab, you most likely have Control Joints that were saw cut across the floor. These are designed to contol the cracks of the concrete as all concrete has a tendancy to do. If the walls were built first, an Expansion Joint will be around the edge of the slab at the walls. If the slab was poured first, there will be no EJ's. The CJ's in my garage actually stop 4-5" from the wall which is as close as their saw could go.