![]() ![]() Unlike floor underlayment or MLV, you must use it alongside other products. When used with other products, it can increase a wall’s STC rating to 58, which is a big improvement.īut, this is perhaps the biggest drawback of Green Glue. Green Glue has plenty of test data on its website that shows how its products help improve STC ratings. ![]() This is what helps them reflect and dampen sound waves. It’s effective only if it’s spread in between two layers of stiff and dense material, like drywall.īoth the damping compound and acoustic caulk never fully cure, meaning they stay slightly rubbery. You spread it on a sheet of drywall during construction, adding another layer of damping to the wall structure.
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