Are all rubberized roof cements elastomeric?
Not necessarily. Rubberized means that rubber has been added to the mix. Elastomeric implies that the material has the rubber like properties of elongation and recovery. Some rubbers such as butyl, neoprene and SBR will not impart elastomeric qualities on an asphalt mixture. Rubbers such as SBS and SEBS will, but only if added in sufficient quantities to an asphalt that is suitable and not overly corrupted with economizing fillers.
