Installing TotalMass Mass Loaded Vinyl Barrier in a standard duty wall will decrease sound transmission. The difference is testable though and noticeable. In a wall or ceiling you should expect less of a difference overall from one thickness to another. Also, the 5 point difference is only fully realized when the material is installed as a standalone product and not in a wall or ceiling assembly. So in real world terms, we recommend considering each product this way: The 1/2 LB is best utilized with higher frequency sound issues and in curtains or other areas that require extra flexibility, the 1 LB is a little more balanced between upper low frequencies to higher frequencies and more universally used, and the 2 LB is best in the lower range to upper mid range frequencies. Although a 5 STC point difference is generally a doubling effect to the human ear, the actual gains can be more significant, or less significant, depending on the exact frequency. The standalone STC rating of each of these thicknesses/weights jumps about 5 points as the material thickness increases (STC 20, STC 26, STC 31). A quick search online and you will find numerous tape options at every cheap prices. Sheathing tapes are generally polypropylene with acrylic adhesive. If your project requires the use of seam tape, then we recommend using sheathing tape to adhere best to our mass loaded vinyl. The largest gains from MLV are experienced in walls, doors, windows, and other odd areas like around pipes, duct work, in curtains, in cars, and hanging on exterior fences. MLV is an acoustically dead material that will bring a value, sometimes big and sometimes small, to any assembly. It doesn't rely on an assembly with particular spacing for framing, or common walls, or existing drywall, or certain finish floors, etc. One big advantage to MLV is that it works essentially anywhere. However, TotalMass MLV Sound Barrier still has its place in sound isolation. With advances in technology, higher-rated products have been introduced, providing more cost effective alternatives in walls, ceilings, and floors. For some time, it was considered the best solution for a number of sound issues. Mass loaded vinyl (MLV) is one of the original sound isolation products. These claims can certainly offer some validity, however these materials need to be distinguished from materials that are acoustically engineered.View our Product FAQ for answers to common questions about TotalMass MLV. Typically, any foam underlayment, will advertise that it's effective against sound. This means that not all underlayment is used to offer soundproofing qualities. For our purposes we simply need to know that the higher the rating, the higher the resistance of the material.įloor underlayment is used to create a smooth, predictable surface for new flooring. The process for measuring these values involves a complicated process and apparatus as well as mathematical formulas. An STC rating evaluates the ability of a construction assembly to reduce airborne noise.An IIC rating measures the resistance to transmission of the impact through a structure. An IIC is the ability to block impact.The main tests used in the flooring industry are Impact Isolation Class (IIC) and Sound Transmission Class (STC). However, before we discuss these options we should first understand what these ratings mean. If you’re soundproofing a floor, a good alternative to MLV is an STC/IIC rated floor underlayment.
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