Laticrete Hydro Barrier (1 Gallon) Laticrete Hydro Barrier 1 Gallon Pail Anti-fracture protection of up to 1/8" (3 mm) over shrinkage and other non-structural cracks. Extra Heavy Service rating per TCNA performance levels (RE: ASTM C627 Robinson Floor Test). Fast curing; allows foot traffic in 46 hours @ 70F (21C), 50% RH. Safeno solvents and non-flammable.