![]() ![]() This is useful if you’re lining the vehicle’s interior, as it’ll stop heat transferring through from the engine, and will stop the car from losing heat from the cabin.įinally, we need to consider ease of installation. It might be more expensive, but if you do some research online you’ll see how many people sing its praises.Īlong with its sound deadening properties, it has the benefit of being a thermal insulator too. In short, Dynamat is specifically designed for applications in vehicles. MLV is, on paper, the more effective product. Perhaps the most important is the cost to effectiveness ratio. There are several other important factors to consider when making this decision too. A material can have a really high STC and be let down by its application and surrounding materials. However, on its own, this isn’t as important as it is when considered alongside other factors. The higher the number, the greater a material’s sound isolation properties. Sound transmission class is a rating used in soundproofing. It has a higher density per area and a higher sound transmission class (STC). On the surface, it might seem like MLV is the winner here. However, to make it easier, here’s a comparison chart: You can probably already appreciate what some of these differences mean for soundproofing a car. ![]() I’ll explain what this means for soundproofing a car in more detail below. Again, this is because it’s designed for use in a car, and is much easier to install.Īs you can see, MLV and Dynamat do fairly similar jobs, but their key differences lie in their construction. What’s more, Dynamat has a self-adhesive backing. This is particularly useful when used under a car’s bonnet and in the interior, as it helps to reflect heat away from the cabin. However, butyl rubber is used for its fire retardant properties, meaning it doesn’t burn easily (if at all).Īlso, Dynamat has a foil coating to improve thermal insulation. It’s made primarily from butyl rubber, which is another form of limp mass. As a vehicle sound deadener, it’s specifically designed for this kind of application. Most importantly is the construction of Dynamat. But there are finer details worth considering. So, on the surface, both products would appear to do the same thing. Sound deadening is a fairly similar concept to sound dampening in that the material is designed to reduce vibrational energy, which reduces the occurrence of sound waves. In an enclosed space like a car, which sees plenty of vibrations, this is a useful quality.īut what about Dynamat? Dynamat (Amazon link) is a brand name for what’s known as a vehicle sound deadener. ![]() This means is reduces vibrational energy before it can turn into sound waves. So, along with blocking sounds, MLV also helps with sound dampening. MLV has several useful properties for soundproofing. Instead, they dissipate off its surface, and, to a lesser extent, are absorbed. This means that when sound waves make contact they’re unable to pass through. Importantly, MLV is what’s known as limp mass. The vinyl provides flexibility and the core provides dense mass. It’s made from 2 outer layers of vinyl with an interior core of either barium sulfate or calcium carbonate. It’s a well known and widely used soundproofing material that’s pretty good at its job. MLV is short for mass loaded vinyl (Amazon link). In this article, I’ll go over the specific differences between MLV and Dynamat to help you understand which will be better for soundproofing your car. ![]()
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