Henry 208R Rubberized Wet Patch Roof Leak Repair is the premium SBS modified bitumen compound for sealing roof leaks on wet surfaces. Made from heavy-bodied asphalt, Henry 208R Rubberized Wet Patch Roof Leak Repair patches holes and cracks even in a driving rain or under water and is so versatile it may be used whether the weather is wet, dry, hot or cold. It is especially easy to spread in cold temperatures.