Bedding materials that have high compressive strength and are sufficiently flexible will resist deflection under stress and failure. Items such as fiberglass and rubber sheeting are good candidates for use with piping systems since they meet these requirements. However, some materials, like metal, may not benefit from using bedding because it can add additional stresses that could cause failure or deformation. In this situation, an adhesive may be a better option since it does not add additional stressors and is forgiving if the bedding material during installation becomes displaced or wet.