Question: what is the difference between dynamat and dynamat xtreme?
Answer: Basically, Dynamat is a butyl-based self-adhering sound deadening material. ... Essentially, Dynamat Xtreme is the best performing version of the product, while the SuperLite is its thinner and lighter cousin. Since it's 30% slimmer than the 67 mil Xtreme, SuperLite is slightly less effective than Dynamat Xtreme.