Yes, you can use aluminum foil facing to wrap food before roasting or grilling. Aluminum foil is a common and safe material used in cooking, especially for wrapping foods to retain moisture and flavor. It's important to ensure the foil is food-grade and not damaged, as this can affect the food's safety and taste. When using foil, make sure it's sealed properly to prevent juices from leaking and to keep the food moist. Avoid direct contact with the heat source as much as possible to prevent the foil from burning and potentially releasing any harmful substances into the food.