"If you cut through a 4-inch thick concrete slab, using a professional-grade saw, it may demand approximately 45 minutes to one hour." Should you wear a mask when cutting concrete? Yes, definitely.

Leave about 2-1/2 inch of the bolts exposed. You’ll have to wait until the concrete can support your weight to start grooving the slab. Cut two-foot squares of 1-1/2-in.-thick foam insulation ...